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74LS Series

74HC Series

74HCT Series

Function

74LS00

74HC00

74HCT00

Quad 2-Input NAND Gates

74LS01

74HC01

 

Quad 2-Input NAND Gates with Open Collector Outputs

74LS02

74HC02

74HCT02

Quad 2-Input NOR Gates

74LS03

74HC03

74HCT03

Quad 2-Input NOR Gates with Open Collector Outputs

74LS04

74HC04

74HCT04

Hex Inverters

74LS05

74HC05

 

Hex Inverters with Open Collector Outputs

74LS06

 

 

Hex Inverter Buffers/Drivers with Open Collector 30V Outputs

74LS07

 

 

Hex Buffers/Drivers with Open Collector 30V Outputs

74LS08

74HC08

74HCT08

Quad 2-Input AND Gates

74LS09

74HC09

 

Quad 2-Input AND Gates with Open Collector Outputs

74LS10

74HC10

74HCT10

Triple 3-Input NAND Gates

74LS11

74HC11

74HCT11

Triple 3-Input AND Gates

74LS12

 

 

Triple 3-Input NAND Gates with Open Collector Outputs

74LS13

 

 

Dual 4-Input NAND Gates with Schmitt Triggers

74LS14

74HC14

74HCT14

Hex Schmitt-Trigger Inverters

74LS15

 

 

Triple 3-Input AND Gates with Open Collector Outputs

74LS16

 

 

Hex Inverter Buffers/Drivers with Open Collector 15V Outputs

74LS17

 

 

Hex Buffers/Drivers with Open Collector 15V Outputs

74LS20

74HC20

74HCT20

Dual 4-Input NAND Gates

74LS21

74HC21

74HCT21

Dual 4-Input AND Gates

74LS22

 

 

Dual 4-Input NAND Gates with Open Collector Outputs

74LS26

 

 

Quad 2-Input NAND Gates with Open Collector Outputs

74LS27

74HC27

74HCT27

Triple 3-Input NOR Gates

74LS28

 

 

Quad 2-Input NOR Buffers

74LS30

74HC30

74HCT30

8-Input NAND Gate

74LS32

74HC32

74HCT32

Quad 2-Input OR Gates

74LS33

 

 

Quad 2-Input NOR Buffers with Open Collector Outputs

74LS37

 

 

Quad 2-Input NAND Buffers

74LS38

 

 

Quad 2-Input NAND Buffers with Open Collector Outputs

74LS40

 

 

Dual 4-Input NAND Buffers

74LS42

74HC42

74HCT42

BCD-to-Decimal Decoder

74LS47

 

 

BCD-to-Seven Segment Decoder/Driver with Open Collector Outputs

74LS48

 

 

BCD-to-Seven Segment Decoder/Driver with Internal Pull-Up Outputs

74LS49

 

 

BCD-to-Seven Segment Decoder/Driver with Open Collector Outputs

74LS51

74HC51

 

2-Wide 2-Input, 2-Wide 3-Input AND-OR-INVERT Gates

74LS54

 

 

4-Wide 2-Input/3-Input AND-OR-INVERT Gates

74LS55

 

 

2-Wide 4-Input AND-OR-INVERT Gates

74LS73A

74HC73

74HCT73

Dual J-K Flip-Flops with Clear

74LS74A

74HC74

74HCT74

Dual D-Type Flip-Flops with Preset and Clear

74LS75

74HC75

74HCT75

4-Bit Latches

74LS76A

74HC76

 

Dual J-K Flip-Flops with Preset and Clear

74LS77

74HC77

 

4-Bit Latches

74LS78A

74HC78

 

Dual J-K Flip-Flops with Preset, Common Clear, and Common Clock

74LS83A

74HC83

 

4-Bit Binary Full Adder with Fast Carry

74LS85

74HC85

74HCT85

4-Bit Magnitude Comparator

74LS86

74HC86

74HCT86

Quad 2-Input Exclusive-OR Gates

74LS90

 

 

Decade Counter

74LS91

74HC91

 

8-Bit Shift Register

74LS92

 

 

Divide-by-Twelve Counter

74LS93

74HC93

74HCT93

4-Bit Binary Counter

74LS95B

74HC95

 

4-Bit Shift Register with Parallel Access

74LS107A

74HC107

74HCT107

Dual J-K Flip-Flops with Clear

 

74HC108

 

Dual J-K Flip-Flops with Preset, Common Clear, and Common Clock

74LS109A

74HC109

74HCT109

Dual J-K Flip-Flops with Preset and Clear

74LS112A

74HC112

74HCT112

Dual J-K Flip-Flops with Preset and Clear

74LS113A

74HC113

 

Dual J-K Flip-Flops with Preset

74LS114A

74HC114

 

Dual J-K Flip-Flops with Preset, Common Clear, and Common Clock

74LS122

 

 

Retriggerable Monostable Multivibrator with Clear

74LS123

74HC123

74HCT123

Dual Retriggerable Monostable Multivibrators with Clear

74LS125A

74HC125

74HCT125

Quad 3-State Buffers with Low Enables

74LS126A

74HC126

74HCT126

Quad 3-State Buffers with High Enables

 

74HC131

 

3-to-8 Line Decoder/Demultiplexer with Address Latches

74LS132

74HC132

74HCT132

Quad 2-Input NAND with Schmitt Triggers

74LS133

74HC133

 

13-Input NAND Gates

74LS136

 

 

Quad 2-Input Exclusive-OR Gates with Open Collector Outputs

74LS137

74HC137

74HCT137

3-to-8 Line Decoder/Demultiplexer with Address Latches

74LS138

74HC138

74HCT138

3-to-8 Line Decoder/Demultiplexer

74LS139

74HC139

74HCT139

Dual 2-to-4 Line Decoder/Demultiplexer

74LS145

 

 

BCD-to-Decimal Decoder/Driver with Open Collector Outputs

74LS147

74HC147

74HCT147

10-to-4 Line Priority Encoder

74LS148

74HC148

 

8-to-3 Line Priority Encoder

 

74HC149

 

8-to-8 Line Priority Encoder

74LS151

74HC151

74HCT151

8-to-1 Line Data Selector/Multiplexer with Strobe

74LS152

74HC152

 

8-to-1 Line Data Selector/Multiplexer

74LS153

74HC153

74HCT153

Dual 4-to-1 Line Data Selectors/Multiplexers

74LS154

74HC154

74HCT154

4-to-16 Line Decoder/Demultiplexer

74LS155

74HC155

 

Dual 2-to-4 Line Decoders/Demultiplexers

74LS156

 

 

Dual 2-to-4 Line Decoders/Demultiplexers with Open Collector Outputs

74LS157

74HC157

74HCT157

Quad 2-to-1 Line Data Selectors/Multiplexers with Noninverted Outputs

74LS158

74HC158

74HCT158

Quad 2-to-1 Line Data Selectors/Multiplexers with Inverted Outputs

74LS160A

74HC160

74HCT160

Synchronous Decade Counter with Direct Clear

74LS161A

74HC161

74HCT161

Synchronous 4-Bit Binary Counter with Direct Clear

74LS162A

74HC162

 

Synchronous Decade Counter with Synchronous Clear

74LS163A

74HC163

74HCT163

Synchronous 4-Bit Binary Counter with Synchronous Clear

74LS164

74HC164

74HCT164

8-Bit Shift Register with Serial-In/Parallel-Out

74LS165A

74HC165

74HCT165

8-Bit Shift Register with Parallel-Load

74LS166A

74HC166

74HCT166

8-Bit Shift Register with Parallel-Load

74LS168

 

 

BCD/Decade Synchronous Up/Down Counter

74LS169

 

 

Modulo 16 Synchronous Up/Down Counter

74LS170

 

 

4-by-4 Register File with Open Collector Outputs

74LS173A

74HC173

74HCT173

4-Bit D-Type Register with 3-State Outputs

74LS174

74HC174

74HCT174

Hex D-Type Flip-Flops with Clear

74LS175

74HC175

74HCT175

Quad D-Type Flip-Flops with Clear

 

74HC180

 

8-Bit Odd/Even Parity Generator/Checker

74LS181

 

 

4-Bit ALU(Arithmetic Logic Unit)

 

74HC182

 

Look-Ahead Carry Generator

74LS190

74HC190

74HCT190

Synchronous Up/Down Decade Counter with Single Clock Line

74LS191

74HC191

74HCT191

Synchronous Up/Down 4-Bit Binary Counter with Single Clock Line

74LS192

74HC192

 

Synchronous Up/Down Decade Counter with Dual Clock Lines

74LS193

74HC193

74HCT193

Synchronous Up/Down 4-Bit Binary Counter with Dual Clock Lines

74LS194A

74HC194

74HCT194

4-Bit Bidirectional Universal Shift Register

74LS195A

74HC195

 

4-Bit Parallel-Access Shift Register

74LS196

 

 

4-Stage Presettable Ripple Counter

74LS197

 

 

4-Stage Presettable Ripple Counter

74LS221

74HC221

74HCT221

Dual Monostable Multivibrators

74LS224A

 

 

16x4 Synchronous FIFO Memory with 3-State Outputs

 

74HC237

74HCT237

3-to-8 Line Decoder/Demultiplexer with Address Latches

 

74HC238

74HCT238

3-to-8 Line Decoder/Demultiplexer with High Outputs

74LS240

74HC240

74HCT240

Octal Buffers/Line Drivers/Receivers with Inverted 3-State Outputs

74LS241

74HC241

74HCT241

Octal Buffers/Line Drivers/Receivers with Noninverted 3-State Outputs

74LS242

74HC242

74HCT242

Quad Bus Transceivers with Inverted 3-State Outputs

74LS243

74HC243

74HCT243

Quad Bus Transceivers with Noninverted 3-State Outputs

74LS244

74HC244

74HCT244

Octal Buffers/Line Drivers/Receivers with Noninverted 3-State Outputs

74LS245

74HC245

74HCT245

Octal Bus Transceivers with Noninverted 3-State Outputs

74LS247

 

 

BCD-to-Seven Segment Decoder/Driver with Open Collector Outputs

74LS248

 

 

BCD-to-Seven Segment Decoder/Driver with Internal Pull-Up Outputs

74LS249

 

 

BCD-to-Seven Segment Decoder/Driver with Open Collector Outputs

74LS251

74HC251

74HCT251

8-to-1 Line Data Selector/Multiplexer with Strobe and 3-State Outputs

74LS253

74HC253

74HCT253

Dual 4-to-1 Line Data Selector/Multiplexer with 3-State Outputs

74LS256

 

 

Dual 4-Bit Addressable Latch

74LS257

74HC257

74HCT257

Quad 2-to-1 Line Data Selector/Multiplexer with Noninverted 3-State Outputs

74LS258

74HC258

74HCT258

Quad 2-to-1 Line Data Selector/Multiplexer with Inverted 3-State Outputs

74LS259

74HC259

74HCT259

8-Bit Addressable Latch

74LS260

 

 

Dual 5-Input NOR Gates

74LS266

 

 

Quad 2-Input Exclusive-NOR Gates with Open Collector Outputs

74LS273

74HC273

74HCT273

Octal D-Type Edge-Triggered Flip-Flops with Clear

74LS279

74HC279

 

Quad R-S Latches

74LS280

74HC280

74HCT280

9-Bit Odd/Even Parity Generator/Checker

74LS283

74HC283

74HCT283

4-Bit Binary Full Adder

74LS292

74HC292

 

Programmable Frequency Divider/Digital Timer

74LS293

 

 

4-Bit Binary Counter

74LS294

74HC294

 

Programmable Frequency Divider/Digital Timer

74LS297

74HC297

74HCT297

Digital Phase-Locked-Loop

74LS298

74HC298

74HCT298

Quad 2-Input Multiplexers with Storage

74LS299

74HC299

74HCT299

4-Bit Universal Shift/Storage Register with 3-State Outputs

 74LS322A

 

 

 8-Bit Shift Register with Sign Extend

 74LS323

74HC323

 

8-Bit Universal Shift/Storage Register with 3-State Outputs

 74LS348

 

 

 8-to-3 Line Priority Encoder with 3-State Outputs

 74LS352

74HC352

 

Dual 4-to-1 Line Data Selectors/Multiplexers

 74LS353

74HC353

 

Dual 4-to-1 Line Data Selectors/Multiplexers with 3-State Outputs

 

74HC354

74HCT354

8-to-1 Line Data Selector/Multiplexer with 3-State Outputs

 

74HC356

74HCT356

8-to-1 Line Data Selector/Multiplexer with 3-State Outputs

74LS365A

74HC365

74HCT365

Hex Bus Drivers with Noninverted 3-State Outputs

74LS366A

74HC366

74HCT366

Hex Bus Drivers with Inverted 3-State Outputs

74LS367A

74HC367

74HCT367

Hex Bus Drivers with Noninverted 3-State Outputs

74LS368A

74HC368

74HCT368

Hex Bus Drivers with Inverted 3-State Outputs

74LS373

74HC373

74HCT373

Octal D-Type Transparent Latches with Noninverted 3-State Outputs

74LS374

74HC374

74HCT374

Octal D-Type Flip-Flops with Noninverted 3-State Outputs

74LS375

74HC375

 

4-Bit D-Type Latches

74LS377

74HC377

74HCT377

Octal D-Type Flip-Flops with Enable

74LS386

74HC386

 

Quad 2-Input Exclusive-OR Gates

74LS390

74HC390

74HCT390

Dual Decade Counters

74LS393

74HC393

74HCT393

Dual 4-Bit Binary Counters

74LS423

74HC423

74HCT423

Dual Retriggerable Monostable Multivibrators

74LS442

74HC442

 

Quad Tridirectional Bus Transceivers

 

74HC443

 

Quad Tridirectional Bus Transceivers

74LS444

74HC444

 

Quad Tridirectional Bus Transceivers

 

 

74HCT449

Quad Bus Transceivers with Individual Direction Controls

74LS490

74HC490

 

Dual 4-Bit Decade Counters

74LS503

 

 

8-Bit Successive Approximation Register

74LS533

74HC533

74HCT533

Octal D-Type Transparent Latches with Inverted 3-State Outputs

74LS534

74HC534

74HCT534

Octal D-Type Flip-Flops with Inverted 3-State Outputs

74LS540

74HC540

74HCT540

Octal Buffers and Line Drivers with Inverted 3-State Outputs

74LS541

74HC541

74HCT541

Octal Buffers and Line Drivers with Noninverted 3-State Outputs

 

74HC563

74HCT563

Octal Transparent Latches with Inverted 3-State Outputs

 

74HC564

74HCT564

Octal D-Type Flip-Flops with Inverted 3-State Outputs

74LS569A

 

 

Binary Up/Down Counter with 3-State Outputs

74LS573

74HC573

74HCT573

Octal Transparent Latches with 3-State Outputs

74LS574

74HC574

74HCT574

Octal D-Type Flip-Flops with 3-State Outputs

 

74HC589

 

8-Bit Serial or Parallel-Input/Serial-Output Shift Register with 3-State Outputs

74LS590

74HC590

 

8-Bit Binary Counter/Register with 3-State Outputs

74LS592

74HC592

 

8-Bit Register/Binary Counter

 

74HC594

 74HCT594

8-Bit Shift Register with Output Registers

74LS595

74HC595

74HCT595

8-Bit Shift Register/Latch with 3-State Outputs

74LS597

74HC597

74HCT597

8-Bit Latch/Shift Register

74LS620

74HC620

74HCT620

Octal Bus Transceivers with Inverted 3-State Outputs

74LS623

74HC623

74HCT623

Octal Bus Transceivers with Noninverted 3-State Outputs

74LS624

 

 

Voltage Controlled Oscillator

74LS640

74HC640

74HCT640

Octal Bus Transceivers with Inverted 3-State Outputs

74LS641

 

 

Octal Bus Transceivers with Noninverted Open-Collector Outputs

74LS642

 

 

Octal Bus Transceivers with Inverted Open-Collector Outputs

 

74HC643

74HCT643

Octal Bus Transceivers with Inverted/Noninverted 3-State Outputs

74LS644

 

 

Octal Bus Transceivers with Inverted/Noninverted 3-State Outputs

74LS645

74HC645

74HCT645

Octal Bus Transceivers with Noninverted 3-State Outputs

74LS646

74HC646

74HCT646

Octal Bus Transceivers/Registers with Multiplexed 3-State Outputs

74LS648

74HC648

74HCT648

Octal Bus Transceivers/Registers with Multiplexed Inverted 3-State Outputs

74LS651

74HC651

 

Octal Bus Transceivers and Registers with 3-State Outputs

74LS652

74HC652

74HCT652

Octal Bus Transceivers and Registers with 3-State Outputs

74LS668

74HC668

 

Synchronous Up/Down Decade Counter

74LS669

74HC669

 

Synchronous Up/Down 4-Bit Binary Counter

74LS670

74HC670

74HCT670

4-by-4 Register File with 3-State Outputs

74LS673

74HC673

 

16-Bit Shift Register

74LS674

74HC674

 

16-Bit Shift Register

 

74HC677

 

16-Bit Address Comparator

 

74HC678

 

16-Bit Address Comparator

 

74HC679

 

12-Bit Address Comparator

 

74HC680

 

12-Bit Address Comparator

74LS682

74HC682

 

8-Bit Magnitude Comparator

74LS684

74HC684

 

8-Bit Magnitude Comparator

74LS688

74HC688

74HCT688

8-Bit Magnitude Comparator with Only Equal-to Output

74LS748

 

 

8-to-3 Line Priority Encoder

74LS795

 

 

Octal Buffer with Noninverted 3-State Outputs(81LS95)

74LS796

 

 

Octal Buffer with Inverted 3-State Outputs(81LS96)

74LS797

 

 

Octal Buffer with Noninverted 3-State Outputs(81LS97)

74LS798

 

 

Octal Buffer with Inverted 3-State Outputs(81LS98)

74LS848

 

 

8-to-3 Line Priority Encoder with 3-State Outputs