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Roland JV-30 MULTI TIMBRAL SYNTHESIZER

service notes

JV-30_SERVICE_NOTESDownload

Rj45 color coded arrangements of UTP cables T-568A and 568B

List of TTL IC’s

Part numberDescription
7400quad 2-input NAND gate
7401quad 2-input NAND gate with open collector outputs
7402quad 2-input NOR gate
7403quad 2-input NAND gate with open collector outputs
7404hex inverter
7405hex inverter with open collector outputs
7406hex inverter buffer/driver with 30 V open collector outputs
7407hex buffer/driver with 30 V open collector outputs
7408quad 2-input AND gate
7409quad 2-input AND gate with open collector outputs
7410triple 3-input NAND gate
7411triple 3-input AND gate
7412triple 3-input NAND gate with open collector outputs
7413dual Schmitt trigger 4-input NAND gate
7414hex Schmitt trigger inverter
7415triple 3-input AND gate with open collector outputs
7416hex inverter buffer/driver with 15 V open collector outputs
7417hex buffer/driver with 15 V open collector outputs
7418dual 4-input NAND gate with Schmitt trigger inputs
7419hex Schmitt trigger inverter
7420dual 4-input NAND gate
7421dual 4-input AND gate
7422dual 4-input NAND gate with open collector outputs
7423expandable dual 4-input NOR gate with strobe
7424quad 2-input NAND gate gates with schmitt-trigger line-receiver inputs.
7425dual 4-input NOR gate with strobe
7426quad 2-input NAND gate with 15 V open collector outputs
7427triple 3-input NOR gate
7428quad 2-input NOR buffer
74308-input NAND gate
7431hex delay elements
7432quad 2-input OR gate
7433quad 2-input NOR buffer with open collector outputs
7434hex noninverters
7435hex noninverters with open-collector outputs
7436quad 2-input NOR gate (different pinout than 7402)
7437quad 2-input NAND buffer
7438quad 2-input NAND buffer with open collector outputs
7439quad 2-input NAND buffer with open collector outputs, input and output terminals flipped, otherwise functionally identical to 7438
7440dual 4-input NAND buffer
7441BCD to decimal decoder/Nixie tube driver
7442BCD to decimal decoder
7443excess-3 to decimal decoder
7444excess-3-Gray code to decimal decoder
7445BCD to decimal decoder/driver
7446BCD to seven-segment display decoder/driver with 30 V open collector outputs
7447BCD to 7-segment decoder/driver with 15 V open collector outputs
7448BCD to 7-segment decoder/driver with Internal Pullups
7449BCD to 7-segment decoder/driver with open collector outputs
7450dual 2-wide 2-input AND-OR-invert gate (one gate expandable)
7451dual 2-wide 2-input AND-OR-invert gate
7452expandable 4-wide 2-input AND-OR gate
7453expandable 4-wide 2-input AND-OR-invert gate
74543-2-2-3-input AND-OR-invert gate
74552-wide 4-input AND-OR-invert Gate (74H version is expandable)
745650:1 frequency divider
745760:1 frequency divider
74582-input & 3-input AND-OR Gate
74592-input & 3-input AND-OR-invert Gate
7460dual 4-input expander
7461triple 3-input expander
74623-2-2-3-input AND-OR expander
7463hex current sensing interface gates
74644-2-3-2-input AND-OR-invert gate
74654-2-3-2 input AND-OR-invert gate with open collector output
7468dual 4 bit decade counters
7469dual 4 bit binary counters
7470AND-gated positive edge triggered J-K flip-flop with preset and clear
7471AND-or-gated J-K master-slave flip-flop with preset
7472AND gated J-K master-slave flip-flop with preset and clear
7473dual J-K flip-flop with clear
7474dual D positive edge triggered flip-flop with preset and clear
74754-bit bistable latch
7476dual J-K flip-flop with preset and clear
74774-bit bistable latch
7478dual positive pulse triggered J-K flip-flop with preset, common clock, and common clear
7479dual D flip-flop
7480gated full adder
748116-bit random access memory
74822-bit binary full adder
74834-bit binary full adder
748416-bit random access memory
74854-bit magnitude comparator
7486quad 2-input XOR gate
74874-bit true/complement/zero/one element
7488256-bit read-only memory
748964-bit random access memory
7490decade counter (separate divide-by-2 and divide-by-5 sections)
74918-bit shift register, serial In, serial out, gated input
7492divide-by-12 counter (separate divide-by-2 and divide-by-6 sections)
74934-bit binary counter (separate divide-by-2 and divide-by-8 sections)
74944-bit shift register, dual asynchronous presets
74954-bit shift register, parallel In, parallel out, serial input
74965-bit parallel-In/parallel-out shift register, asynchronous preset
7497synchronous 6-bit binary rate multiplier
74984-bit data selector/storage register
74994-bit bidirectional universal shift register
74100dual 4-bit bistable latch
74101AND-OR-gated J-K negative-edge-triggered flip-flop with preset
74102AND-gated J-K negative-edge-triggered flip-flop with preset and clear
74103dual J-K negative-edge-triggered flip-flop with clear
74104J-K master-slave flip-flop
74105J-K master-slave flip-flop
74106dual J-K negative-edge-triggered flip-flop with preset and clear
74107dual J-K flip-flop with clear
74108dual J-K negative-edge-triggered flip-flop with preset, common clear, and common clock
74109dual J-Not-K positive-edge-triggered flip-flop with clear and preset
74110AND-gated J-K master-slave flip-flop with data lockout
74111dual J-K master-slave flip-flop with data lockout
74112dual J-K negative-edge-triggered flip-flop with clear and preset
74113dual J-K negative-edge-triggered flip-flop with preset
74114dual J-K negative-edge-triggered flip-flop with preset, common clock and clear
74116dual 4-bit latch with clear
74118hex set/reset latch
74119hex set/reset latch
74120dual pulse synchronizer/drivers
74121monostable multivibrator
74122retriggerable monostable multivibrator with clear
74123dual retriggerable monostable multivibrator with clear
74124dual voltage-controlled oscillator
74125quad bus buffer with three-state outputs, negative enable
74126quad bus buffer with three-state outputs, positive enable
74128quad 2-input NOR Line driver
74130quad 2-input AND gate buffer with 30 V open collector outputs
74131quad 2-input AND gate buffer with 15 V open collector outputs
74132quad 2-input NAND schmitt trigger
7413313-input NAND gate
7413412-input NAND gate with three-state output
74135quad exclusive-or/NOR gate
74136quad 2-input XOR gate with open collector outputs
741373 to 8-line decoder/demultiplexer with address latch
741383 to 8-line decoder/demultiplexer
74139dual 2 to 4-line decoder/demultiplexer
74140dual 4-input NAND line driver
74141BCD to decimal decoder/driver for cold-cathode indicator/Nixie tube
74142decade counter/latch/decoder/driver for Nixie tubes
74143decade counter/latch/decoder/7-segment driver, 15 ma constant current
74144decade counter/latch/decoder/7-segment driver, 15 V open collector outputs
74145BCD to decimal decoder/driver
7414710-line to 4-line priority encoder
741488-line to 3-line priority encoder
7415016-line to 1-line data selector/multiplexer
741518-line to 1-line data selector/multiplexer
741528-line to 1-line data selector/multiplexer
74153dual 4-line to 1-line data selector/multiplexer
741544-line to 16-line decoder/demultiplexer
74155dual 2-line to 4-line decoder/demultiplexer
74156dual 2-line to 4-line decoder/demultiplexer with open collector outputs
74157quad 2-line to 1-line data selector/multiplexer, noninverting
74158quad 2-line to 1-line data selector/multiplexer, inverting
741594-line to 16-line decoder/demultiplexer with open collector outputs
74160synchronous 4-bit decade counter with asynchronous clear
74161synchronous 4-bit binary counter with asynchronous clear
74162synchronous 4-bit decade counter with synchronous clear
74163synchronous 4-bit binary counter with synchronous clear
741648-bit parallel-out serial shift register with asynchronous clear
741658-bit serial shift register, parallel Load, complementary outputs
74166parallel-Load 8-bit shift register
74167synchronous decade rate multiplier
74168synchronous 4-bit up/down decade counter
74169synchronous 4-bit up/down binary counter
741704 by 4 register file with open collector outputs
74171quad D-type flip-flops with clear
7417216-bit multiple port register file with three-state outputs
74173quad d flip-flop with three-state outputs
74174hex d flip-flop with common clear
74175quad d edge-triggered flip-flop with complementary outputs and asynchronous clear
74176presettable decade (bi-quinary) counter/latch
74177presettable binary counter/latch
741784-bit parallel-access shift register
741794-bit parallel-access shift register with asynchronous clear and complementary Qd outputs
741809-bit odd/even parity bit generator and checker
741814-bit arithmetic logic unit and function generator
74182lookahead carry generator
74183dual carry-save full adder
74184BCD to binary converter
741856-bit binary to BCD converter
74186512-bit (64×8) read-only memory with open collector outputs
741871024-bit (256×4) read only memory with open collector outputs
74188256-bit (32×8) programmable read-only memory with open collector outputs
7418964-bit (16×4) RAM with inverting three-state outputs
74190synchronous up/down decade counter
74191synchronous up/down binary counter
74192synchronous up/down decade counter with clear
74193synchronous up/down 4-bit binary counter with clear
741944-bit bidirectional universal shift register
741954-bit parallel-access shift register
74196presettable decade counter/latch
74197presettable binary counter/latch
741988-bit bidirectional universal shift register
741998-bit bidirectional universal shift register with J-Not-K serial inputs
74200256-bit ram with three-state outputs
74201256-bit (256×1) ram with three-state outputs
74206256-bit ram with open collector outputs
742091024-bit (1024×1) ram with three-state output
74210octal buffer
7421964-bit (16×4) RAM with noninverting three-state outputs
74221dual monostable multivibrator with schmitt trigger input
7422216 by 4 synchronous FIFO memory with three-state outputs
7422416 by 4 synchronous FIFO memory with three-state outputs
74225asynchronous 16×5 FIFO memory
742264-bit parallel latched bus transceiver with three-state outputs
7422764-bit fifo memories 16×4
7422864-bit fifo memories 16×4 open-collector outputs
74230octal buffer/driver with three-state outputs, true and complementary inputs
74231octal buffer and line driver with three-state outputs, G and /G complementary inputs
74232quad NOR Schmitt trigger
742373-of-8 decoder/demultiplexer with address latch, active high outputs
742383-of-8 decoder/demultiplexer, active high outputs
74239dual 2-of-4 decoder/demultiplexer, active high outputs
74240octal buffer with Inverted three-state outputs
74241octal buffer with noninverted three-state outputs
74242quad bus transceiver with Inverted three-state outputs
74243quad bus transceiver with noninverted three-state outputs
74244octal buffer with noninverted three-state outputs
74245octal bus transceiver with noninverted three-state outputs
74246BCD to 7-segment decoder/driver with 30 V open collector outputs
74247BCD to 7-segment decoder/driver with 15 V open collector outputs
74248BCD to 7-segment decoder/driver with Internal Pull-up outputs
74249BCD to 7-segment decoder/driver with open collector outputs
742501 of 16 data selectors/multiplexers
742518-line to 1-line data selector/multiplexer with complementary three-state outputs
74253dual 4-line to 1-line data selector/multiplexer with three-state outputs
74255dual 4-bit addressable latch
74256dual 4-bit addressable latch
74257quad 2-line to 1-line data selector/multiplexer with noninverted three-state outputs
74258quad 2-line to 1-line data selector/multiplexer with Inverted three-state outputs
742598-bit addressable latch
74260dual 5-input NOR gate
742612-bit by 4-bit parallel binary multiplier
74264look ahead carry generator
74265quad complementary output elements
74266quad 2-input XNOR gate with open collector outputs
74268hex d-type latches three-state outputs, common output control, common enable
742702048-bit (512×4) read only memory with open collector outputs
742712048-bit (256×8) read only memory with open collector outputs
742738-bit register with reset
742744-bit by 4-bit binary multiplier
742757-bit slice Wallace tree
74276quad J-Not-K edge-triggered Flip-Flops with separate clocks, common preset and clear
742784-bit cascadeable priority registers with latched data inputs
74279quad set-reset latch
742809-bit odd/even Parity bit Generator/checker
742814-bit parallel binary accumulator
74282look-ahead carry generator with selectable carry inputs
742834-bit binary Full adder
742844-bit by 4-bit parallel binary multiplier (low order 4 bits of product)
742854-bit by 4-bit parallel binary multiplier (high order 4 bits of product)
742869-bit parity generator/checker with bus driver parity I/O port
742871024-bit (256×4) programmable read-only memory with three-state outputs
74288256-bit (32×8) programmable read-only memory with three-state outputs
7428964-bit (16×4) RAM with open collector outputs
74290decade counter (separate divide-by-2 and divide-by-5 sections)
742914-bit universal shift register, binary up/down counter, synchronous
74292programmable frequency divider/digital timer
742934-bit binary counter (separate divide-by-2 and divide-by-8 sections)
74294programmable frequency divider/digital timer
742954-bit bidirectional register with three-state outputs
74297digital phase-locked-loop filter
74298quad 2-input multiplexer with storage
742998-bit bidirectional universal shift/storage register with three-state outputs
74301256-bit (256×1) random access memory with open collector output
743091024-bit (1024×1) random access memory with open collector output
74310octal buffer with Schmitt trigger inputs
743141024-bit random access memory
7431964-bit random access memories 16×4 open collector outputs
74320crystal controlled oscillator
74321crystal-controlled oscillators with F/2 and F/4 count-down outputs
743228-bit shift register with sign extend, three-state outputs
743238-bit bidirectional universal shift/storage register with three-state outputs
74324voltage controlled oscillator (or crystal controlled)
74340octal buffer with Schmitt trigger inputs and three-state inverted outputs
74341octal buffer with Schmitt trigger inputs and three-state noninverted outputs
74344octal buffer with Schmitt trigger inputs and three-state noninverted outputs
74347bcd to seven segment decoders/drivers open collector outputs, low voltage version of 7447
743488 to 3-line priority encoder with three-state outputs
743504-bit shifter with three-state outputs
74351dual 8-line to 1-line data selectors/multiplexers with three-state outputs and 4 common data inputs
74352dual 4-line to 1-line data selectors/multiplexers with inverting outputs
74353dual 4-line to 1-line data selectors/multiplexers with inverting three-state outputs
743548 to 1-line data selector/multiplexer with transparent latch, three-state outputs
743558-line to 1-line data selector/multiplexer with transparent registers, open-collector outputs
743568 to 1-line data selector/multiplexer with edge-triggered register, three-state outputs
743578-line to 1-line data selectors/multiplexers/edge-triggered registers, open-collector outputs
74361bubble memory function timing generator
74362four-phase clock generator/driver
74363octal three-state D-latches
74365hex buffer with noninverted three-state outputs
74366hex buffer with Inverted three-state outputs
74367hex buffer with noninverted three-state outputs
74368hex buffer with Inverted three-state outputs
743702048-bit (512×4) read-only memory with three-state outputs
743712048-bit (256×8) read-only memory with three-state outputs
74373octal transparent latch with three-state outputs
74374octal register with three-state outputs
74375quad bistable latch
74376quad J-Not-K flip-flop with common clock and common clear
743778-bit register with clock enable
743786-bit register with clock enable
743794-bit register with clock enable and complementary outputs
743808-bit multifunction register
743814-bit arithmetic logic unit/function generator with generate and propagate outputs
743824-bit arithmetic logic unit/function generator with ripple carry and overflow outputs
743848-bit by 1-bit two’s complement multipliers
74385quad 4-bit adder/subtractor
74386quad 2-input XOR gate
743871024-bit (256×4) programmable read-only memory with open collector outputs
743884-bit register with standard and three-state outputs
74390dual 4-bit decade counter
74393dual 4-bit binary counter
743954-bit universal shift register with three-state outputs
74396octal storage registers, parallel access
74398quad 2-input multiplexers with storage and complementary outputs
74399quad 2-input multiplexer with storage
744051 to 8 decoder, equivalent to Intel 8205, only found as UCY74S405 so might be non-TI number
744088-bit parity tree
74412multi-mode buffered 8-bit latches with three-state outputs and clear
74422re-triggerable mono-stable multivibrators, two inputs
74423dual retriggerable monostable multivibrator
74424two-phase clock generator/driver
74425quad gates with three-state outputs and active low enables
74426quad gates with three-state outputs and active high enables
74428system controller for 8080a
74436line driver/memory driver circuits – mos memory interface, damping output resistor
74437line driver/memory driver circuits – mos memory interface
74438system controller for 8080a
74440quad tridirectional bus transceiver with noninverted open collector outputs
74441quad tridirectional bus transceiver with Inverted open collector outputs
74442quad tridirectional bus transceiver with noninverted three-state outputs
74443quad tridirectional bus transceiver with Inverted three-state outputs
74444quad tridirectional bus transceiver with Inverted and noninverted three-state outputs
74445bcd-to-decimal decoders/drivers
74446quad bus transceivers with direction controls
74447bcd-to-seven-segment decoders/drivers, low voltage version of 74247
74448quad tridirectional bus transceiver with Inverted and noninverted open collector outputs
74449quad bus transceivers with direction controls, true outputs
7445016-to-1 multiplexer with complementary outputs
74451dual 8-to-1 multiplexer
74452dual decade counter, synchronous
74453dual binary counter, synchronous
74453quad 4-to-1 multiplexer
74454dual decade up/down counter, synchronous, preset input
74455dual binary up/down counter, synchronous, preset input
74456NBCD (Natural binary coded decimal) adder
74460bus transfer switch
744618-bit presettable binary counter with three-state outputs
74462fiber-optic link transmitter
74463fiber-optic link receiver
74465octal buffer with three-state true outputs
74466octal buffers with three-state inverted outputs
74467octal buffers with three-state true outputs
74468octal buffers with three-state inverted outputs
744702048-bit (256×8) programmable read-only memory with open collector outputs
744712048-bit (256×8) programmable read-only memory with three-state outputs
74472programmable read-only memory with open collector outputs
74473programmable read-only memory with three-state outputs
74474programmable read-only memory with open collector outputs
74475programmable read-only memory with three-state outputs
744814-bit slice cascadable processor elements
744824-bit slice expandable control elements
74484BCD-to-binary converter
74485binary-to-BCD converter
74490dual decade counter
7449110-bit binary up/down counter with limited preset and three-state outputs
744988-bit bidirectional shift register with parallel inputs and three-state outputs
745088-bit multiplier/divider
745188-bit comparator with open collector output, input pull-up resistor
745198-bit comparator with open collector output
745208-bit comparator with inverted totem-pole output, input pull-up resistor
745218-bit comparator with inverted totem-pole output
745228-bit comparator with inverted open-collector output, input pull-up resistor
74526fuse programmable identity comparator, 16 bit
74527fuse programmable identity comparator, 8 bit + 4 bit conventional Identity comparator
74528fuse programmable Identity comparator, 12 bit
74531octal transparent latch with 32 ma three-state outputs
74532octal register with 32 ma three-state outputs
74533octal transparent latch with inverting three-state outputs
74534octal register with inverting three-state outputs
74535octal transparent latch with inverting three-state outputs
74536octal register with inverting 32 ma three-state outputs
74537BCD to decimal decoder with three-state outputs
745381 of 8 decoder with three-state outputs
74539dual 1 of 4 decoder with three-state outputs
74540inverting octal buffer with three-state outputs
74541non-inverting octal buffer with three-state outputs
74544non-inverting octal registered transceiver with three-state outputs
745588-bit by 8-bit multiplier with three-state outputs
745604-bit decade counter with three-state outputs
745614-bit binary counter with three-state outputs
745638-bit d-type transparent latch with inverting three-state outputs
745648-bit d-type edge-triggered register with inverting three-state outputs
74568decade up/down counter with three-state outputs
74569binary up/down counter with three-state outputs
74573octal D-type transparent latch with three-state outputs
74574octal D-type edge-triggered flip-flop with three-state outputs
74575octal D-type flip-flop with synchronous clear, three-state outputs
74576octal D-type flip-flop with inverting three-state outputs
74577octal D-type flip-flop with synchronous clear, inverting three-state outputs
74580octal transceiver/latch with inverting three-state outputs
745898-bit shift register with input latch, three-state outputs
745908-bit binary counter with output registers and three-state outputs
745918-bit binary counters with output registers, open-collector outputs
745928-bit binary counter with input registers
745938-bit binary counter with input registers and three-state outputs
745948-bit shift registers with output latches
745958-bit shift registers with output latches, three-state parallel outputs
745968-bit shift registers with output latches, open-collector parallel outputs
745978-bit shift registers with input latches
745988-bit shift register with input latches
745998-bit shift registers with output latches, open-collector outputs
74600dynamic memory refresh controller, transparent and burst modes, for 4K or 16K drams
74601dynamic memory refresh controller, transparent and burst modes, for 64K drams
74602dynamic memory refresh controller, cycle steal and burst modes, for 4K or 16K drams
74603dynamic memory refresh controller, cycle steal and burst modes, for 64K drams
74604octal 2-input multiplexer with latch, high-speed, with three-state outputs
74605latch, high-speed, with open collector outputs
74606octal 2-input multiplexer with latch, glitch-free, with three-state outputs
74607octal 2-input multiplexer with latch, glitch-free, with open collector outputs
74608memory cycle controller
74610memory mapper, latched, three-state outputs
74611memory mapper, latched, open collector outputs
74612memory mapper, three-state outputs
74613memory mapper, open collector outputs
74618Schmitt-trigger positive-nand gates with totem-pole outputs
74619Schmitt-trigger inverters with totem-pole outputs
74620octal bus transceiver, inverting, three-state outputs
74621octal bus transceiver, noninverting, open collector outputs
74622octal bus transceiver, inverting, open collector outputs
74623octal bus transceiver, noninverting, three-state outputs
74624voltage-controlled oscillator with enable control, range control, two-phase outputs
74625dual voltage-controlled oscillator with two-phase outputs
74626dual voltage-controlled oscillator with enable control, two-phase outputs
74627dual voltage-controlled oscillator
74628voltage-controlled oscillator with enable control, range control, external temperature compensation, and two-phase outputs
74629dual voltage-controlled oscillator with enable control, range control
7463016-bit error detection and correction (EDAC) with three-state outputs
7463116-bit error detection and correction with open collector outputs
7463232-bit parallel error detection and correction, three-state outputs, byte-write
7463332-bit parallel error detection and correction, open-collector outputs, byte-write
7463432-bit parallel error detection and correction, three-state outputs
7463532-bit parallel error detection and correction, open-collector outputs
74638octal bus transceiver with inverting three-state outputs
74639octal bus transceiver with noninverting three-state outputs
74640octal bus transceiver with inverting three-state outputs
74641octal bus transceiver with noninverting open collector outputs
74642octal bus transceiver with inverting open collector outputs
74643octal bus transceiver with mix of inverting and noninverting three-state outputs
74644octal bus transceiver with mix of inverting and noninverting open collector outputs
74645octal bus transceiver
74646octal bus transceiver/latch/multiplexer with noninverting three-state outputs
74647octal bus transceiver/latch/multiplexer with noninverting open collector outputs
74648octal bus transceiver/latch/multiplexer with inverting three-state outputs
74649octal bus transceiver/latch/multiplexer with inverting open collector outputs
74651octal bus transceiver/register with inverting three-state outputs
74652octal bus transceiver/register with noninverting three-state outputs
74653octal bus transceiver/register with inverting three-state and open collector outputs
74654octal bus transceiver/register with noninverting three-state and open collector outputs
74658octal bus transceiver with Parity, inverting
74659octal bus transceiver with Parity, noninverting
74664octal bus transceiver with Parity, inverting
74665octal bus transceiver with Parity, noninverting
74668synchronous 4-bit decade Up/down counter
74669synchronous 4-bit binary Up/down counter
746704 by 4 register File with three-state outputs
746714-bit bidirectional shift register/latch /multiplexer with three-state outputs
746724-bit bidirectional shift register/latch/multiplexer with three-state outputs
7467316-bit serial-in serial-out shift register with output storage registers, three-state outputs
7467416-bit parallel-in serial-out shift register with three-state outputs
7467716-bit address comparator with enable
7467816-bit address comparator with latch
7467912-bit address comparator with latch
7468012-bit address comparator with enable
746814-bit parallel binary accumulator
746828-bit magnitude comparator
746838-bit magnitude comparator with open collector outputs
746848-bit magnitude comparator
746858-bit magnitude comparator with open collector outputs
746868-bit magnitude comparator with enable
746878-bit magnitude comparator with enable
746888-bit equality comparator
746898-bit magnitude comparator with open collector outputs
74690three-state outputs
746914-bit binary counter/latch/multiplexer with asynchronous reset, three-state outputs
746924-bit decimal counter/latch/multiplexer with synchronous reset, three-state outputs
746934-bit binary counter/latch/multiplexer with synchronous reset, three-state outputs
746944-bit decimal counter/latch/multiplexer with synchronous and asynchronous resets, three-state outputs
746954-bit binary counter/latch/multiplexer with synchronous and asynchronous resets, three-state outputs
746964-bit decimal counter/register/multiplexer with asynchronous reset, three-state outputs
746974-bit binary counter/register/multiplexer with asynchronous reset, three-state outputs
746984-bit decimal counter/register/multiplexer with synchronous reset, three-state outputs
746994-bit binary counter/register/multiplexer with synchronous reset, three-state outputs
74716programmable decade counter
74718programmable binary counter
74724voltage controlled multivibrator
74740octal buffer/Line driver, inverting, three-state outputs
74741octal buffer/Line driver, noninverting, three-state outputs, mixed enable polarity
74744octal buffer/Line driver, noninverting, three-state outputs
747488 to 3-line priority encoder
747798-bit bidirectional binary counter (three-state)
74783synchronous address multiplexer
74790error detection and correction (EDAC)
747948-bit register with readback
74795octal buffer with three-state outputs
74796octal buffer with three-state outputs
74797octal buffer with three-state outputs
74798octal buffer with three-state outputs
74804hex 2-input NAND drivers
74805hex 2-input NOR drivers
74808hex 2-input AND drivers
7482210-bit bus interface flipflop with three-state outputs
74832hex 2-input OR drivers
748488 to 3-line priority encoder with three-state outputs
74873octal transparent latch
74874octal d-type flip-flop
74876octal d-type flip-flop with inverting outputs
74878dual 4-bit d-type flip-flop with synchronous clear, noninverting three-state outputs
74879dual 4-bit d-type flip-flop with synchronous clear, inverting three-state outputs
74880octal transparent latchwith inverting outputs
74881arithmetic logic unit
7488232-bit lookahead carry generator
748888-bit slice processor
74901hex inverting TTL buffer
74902hex non-inverting TTL buffer
74903hex inverting CMOS buffer
74904hex non-inverting CMOS buffer
7490512-Bit successive approximation register
74906hex open drain n-channel buffers
74907hex open drain p-channel buffers
74908dual CMOS 30 V relay driver
74909quad voltage comparator
74910256×1 CMOS static RAM
749114 digit expandable display controller
749126 digit BCD display controller and driver
74914hex schmitt trigger with extended input voltage
74915seven segment to BCD decoder
749176 digit Hex display controller and driver
74918dual CMOS 30 V relay driver
74920256×4 CMOS static RAM
74921256×4 CMOS static RAM
7492216-key encoder
7492320-key encoder
749254-digit counter/display driver
749264-digit counter/display driver
749274-digit counter/display driver
749284-digit counter/display driver
749291024×1 CMOS static RAM
749301024×1 CMOS static RAM
74932phase comparator
74933address bus comparator
74934=ADC0829 ADC, see corresponding NSC datasheet
749353.5-digit digital voltmeter (DVM) support chip for multiplexed 7-segment displays
749363.75-digit digital voltmeter (DVM) support chip for multiplexed 7-segment displays
74937=ADC3511 ADC, see corresponding NSC datasheet
74938=ADC3711 ADC, see corresponding NSC datasheet
74941octal bus/line drivers/line receivers
749454 digit up/down counter with decoder and driver
749474 digit up/down counter with decoder and driver
74948=ADC0816 ADC, see corresponding NSC datasheet
74949=ADC0808 ADC, see corresponding NSC datasheet
741005hex inverting buffer with open-collector output
741035hex noninverting buffers with open-collector outputs
742960error detection and correction (EDAC)
742961edac bus buffer, inverting
742962edac bus buffer, noninverting
742968dynamic memory controller
742969memory timing controller for use with EDAC
742970memory timing controller for use without EDAC
744002dual 4-input NOR gate
744015dual 4-bit shift registers
744016quad bilateral switch
7440175-stage ÷10 Johnson counter
74402014-stage binary counter
7440247 stage ripple carry binary counter
744028BCD to decimal decoder
74404012-stage binary ripple counter
744046phase-locked loop and voltage-controlled oscillator
744049hex inverting buffer
744050hex buffer/converter (non-inverting)
744051high-speed CMOS 8-channel analog multiplexer/demultiplexer
744052dual 4-channel analog multiplexer/demultiplexers
744053triple 2-channel analog multiplexer/demultiplexers
744059programmable divide-by-N counter
74406014-stage binary ripple counter with oscillator
744066quad bilateral switches
74406716-channel analog multiplexer/demultiplexer
744075triple 3-input OR gate
7440788-input OR/NOR gate
7440948-bit three-state shift register/latch
744316quad analog switch
7443518-channel analog multiplexer/demultiplexer with latch
744353Triple 2-channel analog multiplexer/demultiplexer with latch
744511BCD to 7-segment decoder
7445144-to-16 line decoder/demultiplexer with input latches
744520dual 4-bit synchronous binary counter
744538dual retriggerable precision monostable multivibrator
747007hex buffer
747266quad 2-input XNOR gate
742984110-bit bus-interface D-type latch with three-state outputs
7440103presettable 8-bit synchronous down counter
74401054-bit by 16-word FIFO register

Single Mode vs. Multimode Fiber Optic Cables

There are two main types of fiber optic cables: single mode and multimode. Although they can do the same job in some instances, the different construction methods make each of them better suited to certain tasks and budgets. That makes picking between single mode and multimode fiber optic cables an important consideration when it comes to setting up your network.

In a nutshell, single mode cables are better for long-distance cable runs and when signal integrity is of paramount importance. They are typically more expensive than multimode cables, though, and there are different types of single and multimode fiber optic cables to consider, making the single mode vs. multimode fiber head-to-head a little more complicated.

To help you decide on the type of cable you need for your project, here’s everything you need to know about single mode and multimode fiber optic cables.

What is Single Mode and What is Multimode?

Single mode and multimode fiber optic cables are two different types of fiber optic cable aimed at different use cases. Single mode cables are typically made with a single strand of glass at their core, leading to a narrower core of the cabling, and more robust signal integrity over greater distances. They can be further divided into OS1 and OS2 cables, which are designed for indoor and outdoor uses, respectively, with OS2 cables offering greater cable lengths and bandwidth.

Multimode cables have multiple glass strands in the core, making them larger and more versatile since they can handle multiple data streams at a time. However, that broader core means there’s more light refraction throughout the cable, weakening the signal faster, and making multimode cables less suitable for longer runs. They too are divided into more cable types: OM1, OM2, OM3, OM4, and OM5.

OM1 and OM2 cables are the least expensive but offer the least performance of multimode fiber optic cables. OM3, OM4, and OM5 are progressively more capable, closing the gap between single mode and multimode fiber.

Single Mode vs. Multimode Fiber: Key Differences

The key physical difference when comparing single mode vs multimode fiber cables is the core. Where single mode cables have a single glass strand at their core, measuring around 9µm, the multiple strands used to craft a multimode cable’s core measure 62.5µm or 50µm. This physical disparity is what leads to the performance and use case differences for each cable type.

Thanks to the focused signal of single mode cables, they can deliver a signal over multiple miles without the need to repeat or amplify it. OS1 cables can carry a signal up to around a mile and a half, while OS2 cables can reach up to 125 miles. Since they’re designed with outdoor use in mind, and to ensure no problems arise over that expansive length, OS2 single mode fiber cables are also built with a unique spiral core design, with additional semi-rigid tubing around the core that lets the cable flex without putting any tension on the glass fibers at its core.

Single mode cables are typically rated for between 1 and 10 Gigabits per second over these incredible lengths. It’s theoretically possible that they can run at much higher bandwidths, but typical specifications limit them to 10 Gbps at the top end. Single mode cables, specifically OS1 cables, are commonly used in campus data networks, telecommunication networks, and TV transmission networks. OS2 cables are also used in these cases, as well as an overarching backhaul network.

In contrast, multimode cables can only manage much shorter runs of a single cable before amplification is necessary. Legacy OM1 cables are limited to just 100ft, while OM2 provides a higher quality connection and can stretch to 260ft. Their bandwidth is relatively comparable to single mode cables, delivering between 1Gbps and 10 Gbps depending on cable length.

OM3 multimode fiber optic cables can manage longer cable runs at up to 1,000ft, while OM4 and OM5 are capable of 1,300ft cable runs at up to 10 Gbps. All three are also capable of transmitting at a much higher bandwidth: up to 100 Gbps in some cases. However, offering such throughput requires a shorter cable run, with even the most capable OM4 and OM5 cables limited to just 500ft at the maximum bandwidth.

OM1 and OM2 multimode cables can, in some cases, be driven by LED light rather than lasers, which limits their range and performance, as well as their cost. However, OM2 cables are also available with laser optimizations which improve their range and available bandwidth.

To help differentiate between all of these similar, but quite distinct cable types, they are usually given a unique color band. OM1 multimode fiber cables are given orange or grey outer jackets. OM2 cables are orange, while OM3 are often given a cyan or aqua jacket. OM4 cables are given a purple or aqua outer jacket, while OM5 cables are typically lime green.

Both OS1 and OS2 single mode cables are given yellow jackets, which helps them stand out from their multimode contemporaries.

The final difference in the single mode vs. multimode fiber debate is cost. OS1 and OS2 single mode cables tend to be the most expensive, while multimode cables as a whole are cheaper. However, the pricing difference there is more distinct, with OM5 cables getting close to OS2 cable pricing, while OM1 is far more affordable.

Is Multimode Better?

In the single mode vs. multimode fiber debate, there is not one cable that’s the best, but there are some that are better suited to certain situations.

If you need to run fiber optic cable over a vast distance, there’s no argument that single mode OS2 fiber cables are by far the best tool for the job. But if you’re looking to run shorter cables that are just a few hundred feet in length, multimode cables have the potential to not only offer the same ultra-high bandwidth over shorter distances but do so for cheaper, too.

It’s important not to lump all multimode fiber cables together, though, as there are some stark differences between OM1 and OM5 cables, and subtler, but still present differences between the other multimode cable types. Only OM3, OM4, and OM5 cables can offer the same 40Gbps, and 100Gbps bandwidth as OS2 cables, even if it’s over much shorter distances.

With that in mind, it can often be better to use OM4 or OM5 cables instead of OS1 cables when running shorter cable lengths in indoor locations, if given the choice. In that case, multimode fiber cables could be considered “better”. However, there is no replacing the bandwidth and signal robustness of the OS2 single mode fiber optic cable type.

Choosing the Right Fiber Optic Cable

The main consideration when choosing a fiber optic cable is deciding which type you opt for. Single mode vs. multimode fiber cable is a debate you can answer by considering the cable length(s) required as well as the necessary bandwidth. If you are happy with a maximum of 10Gbps bandwidth at lengths under two miles, then you have the choice of OS1 or OM1 and OM2 fiber optic cables. For greater bandwidth over shorter distances, OM3, OM4, and OM5 are valid options, and will likely give you the most cost-effective solution to your networking problem.

If you’re looking for multiple miles of fiber optic cabling, or simply want the most robust networking solutions, then OS2 single mode fiber optic cables are probably your best bet.

That’s not all you should consider, though. There are single mode and multimode cables that come with different jacket ratings for running through walls, or between multiple floors. If you don’t need anything special, look for fiber cables with a standard Optical Fiber Non-conductive riser (OFNR) rating, which should work fine in most instances, including when transiting between floors.

For improved fire protection, plenum-rated fiber optic cables will come with a Low Smoke Zero Halogen (LSZH) jacket type, which means that even if it were to set fire, it would give off very little smoke or halogenic compounds. There are also both simplex and duplex fiber patch cables which have single or dual connectors on each end. If you’re unsure which you need, you can always just buy a duplex cable and use one of the connectors if that’s all you ultimately need.

You should also consider what type of connector your fiber optic cable needs. Unlike copper twisted pair patch cables which almost universally come with RJ45 plugs at the end, fiber optic patch cables can come with a range of headers. There are LC connectors which are the most common and are somewhat smaller than their comparable sibling, SC connectors, and are most commonly found on single mode fiber optic cables.

SC connectors are an older, larger design, but are otherwise comparable and have a locking mechanism, which can make them sturdier. That extra size does make them harder to fit in large numbers in data centers and patch panel cabinets, but they are cheaper and have a more established design.

Less commonly you’ll also find ST fiber optic connectors, which are a similar size to SC connectors but have a twist-bayonet-style mechanism. There’s also the MTP connector which is typically used in data centers and advanced home networks.

For more tips on choosing the right fiber optic cable for you, check out our complete guide to fiber optic cabling.

Ethernet, Networking, Fiber Optic, Cat6

What is APIPA (Automatic Private IP Addressing)?

APIPA stands for Automatic Private IP Addressing (APIPA). It is a feature or characteristic in operating systems (eg. Windows) which enables computers to self-configure an IP address and subnet mask automatically when their DHCP(Dynamic Host Configuration Protocol) server isn’t reachable. The IP address range for APIPA is (169.254.0.1 to 169.254.255.254) having 65, 534 usable IP addresses, with the subnet mask of 255.255.0.0.

History

Initially, the Internet Engineering Task Force (IETF) has reserved the IPv4 address block 169.254.0.0/16 (169.254.0.0 – 169.254.255.255) for link-local addressing. Due to the simultaneous use of IPv4 addresses of different scopes, traffic overload becomes high. The link-local addresses are allocated to interface i.e., stateless in nature such that communication will be established when not getting a response from DHCP Server. After that Microsoft refers to this address autoconfiguration method as “Automatic Private IP Addressing (APIPA)”.

Automatic Configuration and Service Checks

It starts with when the user(client) is unable to find the data/information, then uses APIPA to configure the system with an IP address automatically(ipconfig). The APIPA provides the configuration to check for the presence of a DHCP server(in every five minutes, stated by Microsoft). If APIPA detects a DHCP server on the network configuration area, it stops, and let run the DHCP server that replaces APIPA with dynamically allocated addresses.

Note: To Know the given IP address is provided by which addressing, just run the following command:

ipconfig/all

Characteristics

  • Communication can be established properly if not getting response from DHCP Server.
  • APIPA regulates the service, by which always checking response and status of the main DHCP server in a specific period of time.

Advantages

  • It can be used as a backup of DHCP because when DHCP stops working then APIPA has the ability to assign IP to the networking hosts.
  • It stops unwanted broadcasting.
  • It uses ARP(Address Resolution Protocol) to confirm the address isn’t currently in use.

Disadvantages

  • APIPA ip addresses can slow you network.
  • APIPA doesnot provide network gateway as DHCP does.

Limitations

  • APIPA addresses are restricted for use in local area network.
  • APIPA configured devices follow the peer to peer communication rule.

T-mobile instellingen modem

De instellingen voor (V)VDSL werken voor vrijwel alle DSL-verbindingen die T-Mobile aanbiedt. Werkt dit niet, probeer dan de instellingen voor ADSL. Voor glasvezelaansluitingen (Fiber via WAN/SFP) dien je het modem achter de zwarte Media Converter of witte Media Converter (ONT) aan te sluiten. Heb je momenteel een Draytek modem, dan dien je ook zelf voor een Media Converter te zorgen of een modem met glasvezelaansluiting te gebruiken. De instellingen voor het gebruik van een eigen Media Converter of ONT zie je verderop in dit artikel.
 

Eigen Media Converter aansluiten

Verberg inhoud

Om een eigen Media Converter te gebruiken (dit kan alleen bij een PtP verbinding op zowel het WBA-netwerk als ons eigen netwerk) dien je de volgende instellingen te gebruiken. Let er bij het aansluiten op dat je de glazen connector niet aanraakt. Dit kan de verbinding nadelig beïnvloeden.

Specificaties

  • Bidi optic LR (20KM)
  • TX 1310 nm, -3 ~ -9 dBm
  • RX -3 ~ -22 dBm
  • Class 1 laser product
  • Single mode Fiber (9/125)
  • SP/PC connector of SC/APC connector

Instellingen
Auto Negotiation: On
Duplex mode: Full
Flow control: Disabled
F/O mode: Auto


Alternatieve setting
Auto Negotiation: Off
Manual TP speed: 1000M
Duplex mode: Full
Flow control: Disabled
F/O mode: Auto

Eigen ONT (Optical Network Terminal) aansluiten 

Verberg inhoud

Om een eigen ONT te gebruiken, dien je een ONT te nemen die geschikt is voor het gebruik op je netwerk. We raden het gebruik van een eigen ONT af, omdat we bij het omwisselen enkele dagen nodig kunnen hebben om de door ons geleverde ONT weer te registreren. Als je begrijpt wat de risico’s hiervan zijn, kan je via onze klantenservice een verzoek indienen om je eigen ONT te registreren. Binnen enkele dagen zal de ODIDO ONT de verbinding verliezen. Vanaf dat moment kan je je eigen ONT aansluiten. Let er bij het aansluiten op dat je de glazen connector niet aanraakt. Dit kan de verbinding nadelig beïnvloeden.

Op een KPN WBA glasvezelverbinding is een eigen ONT alleen mogelijk wanneer je met XGSPON verbonden bent. Mogelijk moet je lijn gemigreerd worden voordat je een eigen XGSPON ONT kan aansluiten.

Op ons eigen netwerk (GPON of XGSPON) kan je, afhankelijk van de verbinding, een GPON ONT gebruiken of een XGSPON ONT gebruiken.

VoIP (Vast Bellen)

Verberg inhoud

  • SIP Username: Kan klant vinden in My T-Mobile Thuis 
  • SIP Password: Dit moet klant zelf instellen in My T-Mobile thuis 
  • SIP Proxy Server Address: voip.t-mobilethuis.nl 
  • Primair compressie type: G.711a 
  • Secundair compressie type: G.722 
  • Tertiair compressie type: G.711u 
  • Bediening van spreek volume: Middle 
  • Luister volume regelaar: Middle 
  • G.168 (Echo-annulering): inschakelen 
  • RTP Start – eind poort:  40000 – 40018 
  • DTMF-modus: PCM 
  • Transport Type: UDP 
  • SIP DSCP Markeringinstelling: 46 
  • RTP DSCP Markeringinstelling: 46 
  • Vervaltermijn van SIP-registratie: 3600 seconden 
  • Mislukte timer voor opnieuw proberen van SIP-registratie: 1800 
  • Sessie verloopt (SE): 900 
  • Min-SE : 600 

IPTV (tv-kijken)

Verberg inhoud

Deze instellingen zijn enkel nodig wanneer je op het oude TV platform zit (Interactieve TV). Op het nieuwere platform T-Mobile TV gaat het tv-signaal over het internet VLAN en is er ook geen routing nodig. 

WAN (V)VDSL ETHWAN ADSL 
VPI/VCI   8/71 
Mode Routing Routing Routing 
Encapsulation IPoE IPoE IPoE 
IPv4/IPv6 Mode IPv4 IPv4 IPv4 
VLAN Enable 802.1p: 0 802.1q: 640 Enable 802.1p: 0 802.1q: 640 Disable 
MTU 1500 1500 1500 
NAT P P P 
IGMP Proxy P P P 

Static Route: 

Rule Name Destination IP Subnet mask WAN Interface 
IPTV_SR01 10.12.255.0 255.255.255.0 IPTV Sub interface 
IPTV_SR02 10.10.254.0 255.255.255.0 IPTV Sub interface 
IPTV_SR03 10.10.26.0 255.255.255.0 IPTV Sub interface 
IPTV_SR04 10.10.108.0 255.255.255.0 IPTV Sub interface 
IPTV_SR05 10.18.0.0 255.255.240.0 IPTV Sub interface 
IPTV_SR06 10.12.254.0 255.255.255.0 IPTV Sub interface 
IPTV_SR07 10.10.24.0 255.255.255.192 IPTV Sub interface 
IPTV_SR08 10.200.0.0 255.255.252.0 IPTV Sub interface 
IPTV_SR09 10.12.200.65 255.255.255.255 IPTV Sub interface 

IGMP Proxy: Enabled 

IGMP Mode: Blocking Mode 

IGMP version: 2 

Oracle Linux 7 version for the Raspberry pi

Some time ago the people from the Oracle Linux team have taken the time to build a Oracle Linux 7 version for the Raspberry pi. The Raspberry Pi is a series of small single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote the teaching of basic computer science in schools and in developing countries. The original model became far more popular than anticipated, selling outside its target market for uses such as robotics. It does not include peripherals (such as keyboards, mice and cases).

The operating system you use will have to be placed on a single Micro SD card. Using a mac the below command was useful to place the downloaded Oracle Linux 7 distribution for the Raspberry Pi on the Micro SD card:

sudo dd bs=1m if=/var/tmp/rpi3-ol7.3-image.img of=/dev/disk2 conv=sync

If you face the issue of the below error, you most likely have mounted the SD card to your operating system. You will have to unmount it (via the disk utility app) and retry the command. Do note this could take some time to complete.

dd: /dev/disk2: Resource busy

A bit of care is needed when executing the command. If your Micro SD card is NOT mounted on /dev/disk2 you might run into the issue that you damage an existing other disk. Meaning, you need to check if /dev/disk2 is indeed the SD card in your case. Using a Mac you can use the below command to check your disks:

diskutil list

When your dd command is finished and you place the SD card in your Raspberry Pi and start it you should end up with a running Oracle Linux 7 operating system on your Raspberry Pi.

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