74LS Series Glossary

74ls00 2-input quad NAND gate
74ls01 2-input quad NAND gate (OC)
74ls02 2-input quad
NOR gate 74ls03 2-input quad NAND gate (OC)
74ls04 Hex inverter
74ls05 Hex inverter (OC)
74ls06 Hex high voltage output inverting buffer/driver (OC, 30V)
74ls07 Hex high voltage output buffer/driver (OC, 30V)
74ls08 2-input quad AND gate
74ls09 2-input quad AND gate (OC)
74ls10 3-input triple NAND gate
74ls11 3-input triple AND gate
74ls12 3-input triple NAND gate (OC)
74ls13 4-input dual NAND gate (Schmitt trigger)
74ls14 Hex inverter (Schmitt trigger)
74ls15 3-input triple AND gate (OC)
74ls16 Six high voltage output inverting buffer/driver (OC
, 15V) 74LS17 Six high voltage output buffer/driver (OC, 15V)
74LS18 4-input dual NAND gate (Schmitt trigger)
74LS19 Six inverters (Schmitt trigger)
74LS20 4-input dual NAND gate
74LS21 4-input dual AND gate
74LS22 4-input dual NAND gate (OC)
74LS23 Dual expandable input NOR gate
74LS24 2-input quad NAND gate (Schmitt trigger)
74LS25 4-input dual NOR gate (with select)
74LS26 2-input quad high level interface NAND buffer (OC, 15V)
74LS27 3-input triple NOR gate
74LS28 2-input quad NOR buffer
74LS30 8-input NAND gate
74LS31 Delay circuit
74LS32 2-input quad OR gate
74LS33 2-input quad NOR buffer (open collector output)
74LS34 Hexa buffer
74LS35 Hexa buffer (OC)
74LS36 2-input quad NOR gate (with select)
74LS37 2-input quad NAND buffer
74LS38 2-input quad NOR buffer (open collector output)
74LS39 2-input quad NOR buffer (open collector output)
74LS40 4-input double NAND buffer
74LS41 BCD-decade counter
74LS42 4-line to 10-line decoder (BCD input)
74LS43 4-line to 10-line decoder (Remainder 3 code input)
74LS44 4-line to 10-line decoder (Remainder 3 Gray code input)
74LS45 BCD-decimal decoder/driver
74LS46 BCD-seven-segment decoder/driver
74LS47 BCD-seven-segment decoder/driver
74LS48 BCD-seven-segment decoder/driver
74LS49 BCD-seven-segment decoder/driver (OC)
74LS50 Dual two-way 2-2 input AND-OR gate (one gate can be expanded) 74LS51
Dual two-way 2-2 input AND-OR gate
74LS51 Dual 3-3 input, dual 2-2 input AND-OR gate
74LS52 Quad 2-3-2-2 input AND-OR gate (expandable)
74LS53 Quad 2-2-2-2 input AND-OR gate (expandable)
74LS53 Quad 2-2-3-2 input AND-OR gate (expandable) 74LS54 Quad 2-2-2-2 input
AND-OR gate
74LS54 Quad 2-3-3-2 input AND-OR gate
74LS54 Quad 2-2-3-2 input AND-OR gate
74LS55 Dual 4-4 input AND-NOR gate (expandable)
74LS60 Dual 4-input AND expander
74LS61 Triple 3-input AND expander
74LS62 Quad 2-3-3-2 input AND-OR expander
74LS63 Hexa-current sense interface gate
74LS64 Quad 4-2-3-2 input AND-NOR gate
74LS65 Quad 4-2-3-2 input AND-NOR gate (OC)
74LS70 AND gate input rising edge JK flip-flop
74LS71 AND input RS master-slave flip-flop
74LS72 AND gate input master-slave JK flip-flop
74LS73 Dual JK flip-flop (with clear terminal)
74LS74 Positive edge triggered dual D-type flip-flop (with preset terminal and clear terminal)
74LS75 4-bit bistable latch
74LS76 Dual JK flip-flop (with preset terminal and clear terminal)
74LS77 4-bit bistable latch
74ls78 Dual JK flip-flop (with preset, common clear and common clock)
74ls80 Gated full adder
74ls81 16-bit random access memory
74ls82 2-bit binary full adder (fast carry)
74ls83 4-bit binary full adder (fast carry)
74ls84 16-bit random access memory
74ls85 4-bit digital comparator
74ls86 2-input quad XOR gate
74ls87 4-bit binary original/inverted/oi unit
74ls89 64-bit read/write memory
74ls90 Decimal counter
74ls91 8-bit shift register
74ls92 12-bit divide-by-2 counter (divide-by-2 and divide-by-6)
74ls93 4-bit binary counter
74ls94 4-bit shift register (asynchronous)
74ls95 4-bit shift register (parallel IO)
74ls96 5-bit shift register
74ls97 Six-bit synchronous binary rate multiplier
74ls100 Eight-bit bistable latch
74ls103 Negative edge triggered dual jk master-slave flip-flop (with clear terminal)
74ls106 Negative edge triggered dual jk master-slave flip-flop (with preset, clear, clock)
74ls107 Dual jk master-slave flip-flop (with clear terminal)
74ls108 Dual jk master-slave flip-flop (with preset, clear, clock)
74ls109 Dual jk flip-flop (with set, clear, positive trigger)
74ls110 AND gate input jk master-slave flip-flop (with lock)
74ls111 Dual jk master-slave flip-flop (with data lock)
74ls112 Negative edge triggered dual jk flip-flop (with preset terminal and clear terminal)
74ls113 Negative edge triggered dual jk flip-flop (with preset terminal)
74ls114 Dual jk flip-flop (with preset terminal, common clear terminal and clock terminal)
74ls116 Dual 4-bit latch
74ls120 Dual pulse synchronizer/driver
74ls121 Monostable flip-flop (Schmitt trigger)
74ls122 Retriggerable monostable multivibrator (with clear terminal)
74ls123 Retriggerable dual monostable multivibrator
74ls125 Quad bus buffer gate (three-state output)
74ls126 Quad bus buffer gate (three-state output)
74ls128 2-input quad OR line driver
74ls131 3-8 decoder
74ls132 2-input quad NAND gate (Schmitt trigger)
74ls133 13-input NAND gate
74ls134 12-input AND gate (three-state output)
74ls135 Quad XOR/XNOR gate
74ls136 2-input quad XOR gate (OC)
74ls137 8-to-1 latch decoder/multiplexer
74LS138 3-8 line decoder/multiplexer
74LS139 Dual 2-4 line decoder/multiplexer
74LS140 Dual 4-input NAND line driver
74LS141 BCD-decimal decoder/driver
74LS142 Counter/latch/decoder/driver
74LS145 4-10 decoder/driver
74LS147 10-line-to-4-line priority encoder
74LS148 8-line-to-3-line octal priority encoder
74LS150 16-to-1 data selector (inverted output)
74LS151 8-to-1 data selector (complementary output)
74LS152 8-to-1 data selector multiplexer
74LS153 Dual 4-to-1 data selector/multiplexer
74LS154 4-line-to-16-line decoder
74LS155 Dual 2-4 Decoder/Distributor (Totem Pole Output)
74LS156 Dual 2-4 Decoder/Distributor (Open Collector Output)
74LS157 Quad 2-to-1 Data Selector/Multiplexer
74LS158 Quad 2-to-1 Data Selector (Inverting Output)
74LS160 Presettable BCD Counter (Asynchronous Clear)
74LS161 Presettable 4-Bit Binary Counter (Parallel
Clear Asynchronous) 74LS162 Presettable BCD Counter ( Asynchronous Clear)
74LS163 Presettable 4-Bit Binary Counter (Parallel Clear Asynchronous)
74LS164 8-Bit Parallel Output Serial Shift Register
74LS165 Parallel Input 8-Bit Shift Register (Complement Output)
74LS166 8-Bit Shift Register
74LS167 Synchronous Decimal Rate Multiplier
74LS168 4-Bit Up/Down Synchronous Counter (Decimal)
74LS169 Synchronous binary reversible counter
74ls170 4*4 register stack
74ls171 Quad D flip-flop (with clear terminal)
74ls172 16-bit register stack
74ls173 4-bit D-type register (with clear terminal)
74ls174 Hex D flip-flop
74ls175 Quad D flip-flop
74ls176 Decimal presettable counter
74ls177 2-8-16-decimal presettable counter
74ls178 Four-bit universal shift register
74ls179 Four-bit universal shift register
74ls180 Nine-bit parity generator/checker
74ls181 Arithmetic logic unit/function generator
74ls182 Carry lookahead generator
74ls183 Double-preserve carry full adder
74ls184 BCD-binary converter
74ls185 Binary-BCD converter
74ls190 Synchronous reversible counter (BCD, binary)
74ls191 Synchronous reversible counter (BCD, binary)
74ls192 Synchronous reversible counter (BCD, binary)
74ls193 Synchronous reversible counter (BCD, binary)
74ls194 Four-bit bidirectional universal shift register
74ls195 Four-bit universal shift register
74ls196 Presettable counter/latch
74ls197 Presettable counter/latch (binary)
74ls198 Eight-bit bidirectional shift register
74ls199 Eight-bit shift register
74ls210 2-5-10 base counter
74ls213 2-n-10 variable base counter
74ls221 Dual monostable flip-flop
74ls230 Eight 3-state bus drivers
74ls231 Eight 3-state bus reverse drivers
74ls240 Eight buffers/line drivers/line receivers (inverted three-state output)
74ls241 Eight buffers/line drivers/line receivers (original three-state output)
74ls242 Octal Buffer/Line Driver/Line Receiver
74LS243 4 In-Phase Three-State Bus Transceiver
74LS244 Octal Buffer/Line Driver/Line Receiver
74LS245 Octal Bidirectional Bus Transceiver
74LS246 4-Line Seven-Segment Decoder/Driver (30V)
74LS247 4-Line Seven-Segment Decoder/Driver (15V)
74LS248 4-Line Seven-Segment Decoder/Driver
74LS249 4-Line Seven-Segment Decoder/Driver
74LS251 8-to-1 Data Selector (Three-State Output)
74LS253 Dual Four-to-1 Data Selector (Three-State Output)
74LS256 Dual Four-Bit Addressable Latch
74LS257 Quad 2-to-1 Data Selector (Three-State Output)
74LS258 Quad 2-to-1 Data Selector (Inverted Three-State Output)
74LS259 8-Bit Addressable Latch
74LS260 Dual 5-input NOR gate
74LS261 4*2 parallel binary multiplier
74LS265 Quad complementary output element
74LS266 2-input quad exclusive NOR gate (OC)
74LS270 2048-bit ROM (512-bit four-byte, OC)
74LS271 2048-bit ROM (256-bit eight-byte, OC)
74LS273 Eight D flip-flops
74LS274 4*4 parallel binary multiplier
74LS275 Seven-bit chip-type Wallace tree multiplier
74LS276 Quad JK flip-flops
74LS278 Four-bit cascaded priority register
74LS279 Quad SR latch
74LS280 9-bit odd/even parity generator/verifier
74LS281
74LS283 4-bit binary full adder
74LS290 Decade counter
74LS291 32-bit programmable module
74ls293 4-bit binary counter
74ls294 16-bit programmable module 74ls295
4-bit bidirectional universal shift register
74ls298 4-2 input multiplexer (with strobe)
74ls299 8-bit universal shift register (three-state output)
74ls348 8-3 line priority encoder (three-state output)
74ls352 Dual 4-to-1 data selector/multiplexer
74ls353 Dual 4-1 line data selector (three-state output)
74ls354 8-input multiplexer/data selector/register, three-state complement output
74ls355 8-input multiplexer/data selector/register, three-state complement output
74ls356 8-input multiplexer/data selector/register, three-state complement output
74ls357 8-input multiplexer/data selector/register, three-state complement output
74ls365 6 bus drivers
74ls366 Hex Inverting Tri-State Buffer/Line Driver
74ls367 Hex Inverting Tri-State Buffer/Line Driver 74ls368
Hex Inverting Tri-State Buffer/Line Driver
74ls373 Octal D Latch
74ls374 Octal D Flip-Flop (Tri-State Non-Inverting)
74ls375 4-bit Bistable Latch
74ls377 Octal D Flip-Flop with Enable
74ls378 Hexal D Flip-Flop
74ls379 Quad D Flip-Flop
74ls381 Arithmetic Logic Unit/Function Generator
74ls382 Arithmetic Logic Unit/Function Generator
74ls384 8-bit*1-bit Complement Multiplier
74ls385 Quad Serial Adder/Multiplier
74ls386 2-input Quad XOR Gate
74ls390 Dual Decade Counter
74ls391 Dual 4-bit Binary Counter
74ls395 4-bit Universal Shift Register
74ls396 8-bit storage register
74ls398 Quad 2-input multiplexer (dual output)
74ls399 Quad-2 input multiplexer (with select)
74ls422 Monostable flip-flop
74ls423 Dual monostable flip-flop
74ls440 Quad 3-directional bus transceiver, open collector
74ls441 Quad 3-directional bus transceiver, open collector
74ls442 Quad 3-directional bus transceiver, three-state output
74ls443 Quad 3-directional bus transceiver, three-state output
74ls444 Quad 3-directional bus transceiver, three-state output
74ls445 BCD-decimal decoder/driver, three-state output
74ls446 Dual bus transceiver with direction control
74ls448 Quad 3-directional bus transceiver, three-state output
74ls449 Dual bus transceiver with direction control
74ls465 Octal three-state line buffer
74ls466 Eight three-state line inversion buffer
74ls467 Eight three-state line buffer
74ls468 Eight three-state line inversion buffer
74ls490 Dual decade counter
74ls540 Eight-bit three-state bus buffer (inversion)
74ls541 Eight-bit three-state bus buffer
74ls589 Parallel-in serial-out shift register with input latch
74ls590 8-bit binary counter with
output register 74ls591 8-bit binary counter with output register
74ls592 8-bit binary counter
with output register 74ls593 8-bit binary counter
with output register 74ls594 8-bit serial-in parallel-out shift register with output latch
74ls595 8-bit output latch shift register
74ls596 8-bit serial-in parallel-out shift register with output latch
74ls597 8-bit output latch shift register
74ls598 74ls599 8-bit parallel-in and parallel-out shift register with input latch 74ls604 8-bit
serial-in and parallel-out shift register with output latch 74ls605 8-bit latch 74ls606 8-bit latch 74ls607 8-bit latch 74ls620 8-bit three-state bus transmitter and receiver (inverting) 74ls621 8-bit bus transceiver 74ls622 8-bit bus transceiver 74ls623 8-bit bus transceiver 74ls640 Inverting bus transceiver (three-state output) 74ls641 In-phase 8-bit bus transceiver, open collector 74ls642 In-phase 8-bit bus transceiver, open collector 74ls643 8-bit three-state bus transmitter and receiver 74ls644 True value inverting 8-bit bus transceiver, open collector 74ls645 Three-state in-phase 8-bus transceiver 74ls646 Eight-bit bus transceiver, register 74ls647 Eight-bit bus transceiver, register 74ls648 Eight-bit bus transceiver, register 74ls649 Eight-bit bus transceiver, register 74ls651 Three-state inverting 8-bus transceiver 74ls652 Three-state inverting 8-bus transceiver 74ls653 Inverting 8-bus transceiver, open collector 74ls654 In-phase 8-bus transceiver, open collector 74ls668 4-bit synchronous up/down decade counter 74ls669 4-bit synchronous binary reversible counter with carry lookahead 74ls670 4*4 register stack (three-state) 74ls671 Four-bit merge-in and merge-out shift register with output register 74ls672 Four-bit merge-in and merge-out shift register with output register 74ls673 16-bit parallel output memory, 16-bit serial input and serial output shift register




























74ls674 16-bit parallel input serial output shift register
74ls681 4-bit parallel binary accumulator
74ls682 8-bit numerical comparator (totem pole output)
74ls683 8-bit numerical comparator (open collector)
74ls684 8-bit numerical comparator (totem pole output)
74ls685 8-bit numerical comparator (open collector)
74ls686 8-bit numerical comparator (totem pole output)
74ls687 8-bit numerical comparator (open collector)
74ls688 8-bit digital comparator (OC output)
74ls689 8-bit digital comparator
74ls690 Synchronous decade counter/register (with number selection, three-state output, direct clear)
74ls691 Counter/register (with multi-conversion, three-state output)
74ls692 Synchronous decade counter (with preset input, synchronous clear)
74ls693 Counter/Register (with multiple conversions, three-state output)
74ls696 Synchronous up/down decade counter/register (with number selection, three-state output, direct clear)
74ls697 Counter/Register (with multiple conversions, three-state output)
74ls698 Counter/Register (with multiple conversions, three-state output)
74ls699 Counter/Register (with multiple conversions, three-state output)
74ls716 Programmable Modulus-N Decade Counter
74ls718 Programmable Modulus-N Decade Counter