74xx Logic Series
IC Functions by Number

00Quad 2-Input NAND Gate 01Quad 2-Input NAND Gate (OC)
02Quad 2-Input Positive NOR Gate 03Quad 2-Input Positive NAND Gate
04Hex Inverter 05Hex Inverter (OC)
06Hex Inverter Buffer/Driver (OC) 0730V,40mA Hex Buffer Driver (OC)
08Quad 2-Input AND Gate 09Quad 2-Input Positive AND Gate (OC)
10Triple 3-Input Positive NAND Gate 11Triple 3-Input Positive AND Gate
14Hex Inverting Schmitt Trigger 16Hex Inverter Buffer/Driver (OC)
1715V,40mA Hex Buffer Driver (OC) 20Dual 4-Input Positive NAND Gate
21Dual 4-Input Positive AND Gate 25Dual 4-Input Positive NOR Gate
26Quad 2-Input NAND Gate (OC) 27Triple 3-Input NOR Gate
28Quad 2-Input NOR Buffer 308-Input Positive NAND Gate
31Delay Element 32Quad 2-Input Positive OR Gate
33Quad 2-Input NOR Buffer (OC) 37Quad 2-Input Positive NAND Buffer
38Quad 2-Input NAND Buffer (OC) 42BCD To Decimal Decoder (1-of-10)
45BCD To Decimal Decoder/Driver (OC) 46BCD To 7 Segment Decoder/Driver (30V)
47BCD To 7 Segment Decoder/Driver (15V) 48BCD To 7 Segment Decoder/Driver
57Dual 2 Wide 2-Input AND-OR Invert Gate 58Dual AND-OR Gate
73Dual JK Flip-Flop with Reset; Negative-Edge Trigger 74Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger
75Quad Bistable Transparent Latch 76Dual JK Master Slave Flip-Flop
774-Bit Bistable Latch 834-Bit Binary Full Adder
854-Bit Magnitude Comparator 86Quad 2-Input EXCLUSIVE-OR Gate
90Decade Counter 934-Bit Binary Ripple Counter
976-Bit Asynchronous Binary Rate Multiplier 107Dual JK Flip-Flop with Reset; Negative-Edge Trigger
109Dual JK Flip-Flop with Set and Reset; Positive-Edge Trigger 112Dual JK Flip-Flop with Set and Reset; Negative-Edge Trigger
121One Short Multivibrator 122Retriggerable Monostable Multivibrator
123Dual Retriggerable Monostable Multivibrator with Reset 124Dual Voltage Controlled Oscillator
125Quad Buffer/Line Driver (3-State) 126Quad Buffer/Line Driver (3-State)
128Quad 2-Input NOR Line Driver 132Quad 2-Input NAND Schmitt Trigger
13313-Input NAND Gate 136Quad Exclusive OR Gate (OC)
1373-to-8 Line Decoder/Demultiplexer with Address Latches; Inv 1383-to-8 Line Decoder/Demultiplexer; Inverting
139Dual 2-to-4 Line Decoder/Demultiplexer 140Dual 4-Input NAND Line Driver
145BCD To Decimal Decoder/Driver (OC) 14710-to-4 Line Priority Encoder
1488-to-3 Priority Encoder 15016-Input Multiplexer
1518-Input Multiplexer 153Dual 4-Input Multiplexer
1544-to-16 Line Decoder/Demultiplexer 155Dual 2-to-4 Demultiplexer
156Dual 2-to-4 Demultiplexer (OC) 157Quad 2-Input Multiplexer
158Quad 2-Input Multiplexer; Inverting 1594-to-16 Line Decoder
160Presettable Synchronous BCD Decade Counter; Reset 161Presettable Synchronous 4-Bit Binary Counter; Reset
163Presettable Synchronous 4-Bit Binary Counter; Reset 1648-Bit Serial-In/Parallel-Out Shift Register
1658-Bit Parallel-In/Serial-Out Shift Register 1668-Bit Parallel-In/Serial-Out Shift Register
169Synchronous 4-Bit Binary Up/Down Counter 173Quad D-Type Flip-Flop; Positive-Edge Trigger (3-State)
174Hex D-Type Flip-Flop with Reset; Positive-Edge Trigger 175Quad D-Type Flip-Flop with Reset; Positive-Edge Trigger
18964-Bit Bipolar Scratch Pad Memory 190Synchronous Decade Up/Down Counter
191Presettable Synchronous 4-Bit Binary Up/Down Counter 193Presettable Synchronous 4-Bit Binary Up/Down Counter
1944-Bit Bidirectional Universal Shift Register 1954-Bit Parallel Access Shift Register
221Dual Non-Retriggerable Monostable Multivibrator with Reset 2373-to-8 Line Decoder/Demultiplexer with Address Latches
2383-to-8 Line Decoder/Demultiplexer 240Octal Buffer/Line Driver; Inverting (3-State)
241Octal Buffer/Line Driver (3-State) 243Quad Bus Transceiver (3-State)
244Octal Buffer/Line Driver (3-State) 245Octal Bus Transceiver (3-State)
2518-Input Multiplexer (3-State) 253Dual 4-Input Multiplexer (3-State)
257Quad 2-Input Multiplexer (3-State) 258Quad 2-Input Multiplexer; Inverting (3-State)
2598-Bit Addressable Latch 260Dual 5-Bit Input NOR Gate
2698-Bit Up/Down Counter 273Octal D-Type Flip-Flop with Reset; Positive-Edge Trigger
279Quad R-S Latch 2809-Bit Odd/Even Parity Generator/Checker
2834-Bit Binary Full Adder with Fast Carry 29416-Bit Programmable Frequency Divider
297Digital Phase Locked Loop 2998-Bit Universal Shift Register (3-State)
321Crystal Oscillator 365Hex Buffer/Line Driver (3-State)
366Hex Buffer/Line Driver; Inverting (3-State) 367Hex Buffer/Line Driver (3-State)
368Hex Buffer/Line Driver; Inverting (3-State) 373Octal D-Type Transparent Latch (3-State)
374Octal D-Type Flip-Flop; Positive Edge-Trigger (3-State) 375Quad Latch
377Octal D-Type Flip-Flop with Data Enable; Positive-Edge Trigger 378Hex D-Type Flip-Flop with Enable
390Dual Decade Ripple Counter 393Dual 4-Bit Binary Ripple Counter
399Quad 2-Input Multiplexer 423Dual Retriggerable Monostable Multivibrator with Reset
465Octal Buffer Tri-State Output 521Octal Comparator
534Octal D-Type Flip-Flop; Positive Edge-Trigger; Inverting (3-State) 540Octal Buffer/Line Driver; Inverting (3-State)
541Octal Buffer/Line Driver (3-State) 543Octal Registered Transceiver
563Octal D-Type Transparent Latch; Inverting (3-State) 564Octal D-Type Flip-Flop; Positive-Edge Trigger; Inverting (3-State)
569Synchronous Didirectional Binary Counter 573Octal D-Type Transparent Latch (3-State)
574Octal D-Type Flip-Flop; Positive Edge-Trigger (3-State) 5798-Bit Up/Down Counter
580Inverting Octal D-Type Latch 5898-Bit Shift Register with Input Latch
5928-Bit Binary Counter with Input Register 5938-Bit Binary Counter O/P Register TS I/O
5948-Bit Shift Register with Output Register 5958-Bit Ser-In/Ser Or Par-Out Shift Register with Out Latches (3-State)
5978-Bit Shift Register with Input Flip-Flops 60416 to 8 Multiplexer (High Speed)
624Voltage Controlled Oscillator 628Voltage Controlled Oscillator
629Voltage Controlled Oscillator 640Octal Bus Transceiver; Inverting (3-State)
641Octal Bus Transceiver 645Octal Bus Transceiver
646Octal Bus Transceiver/Register (3-State) 652Octal Bus Transceiver/Register (3-State)
6704 x 4 Register File (3-State) 67416-Bit Shift Register 16-Bit Parallel Output
6828-Bit Magnitude Comparator 6848-Bit Magnitude Comparator
6888-Bit Magnitude Comparator 82110-Bit D-Type Flip-Flop
8258-Bit D-Type Flip-Flop 8278-Bit Buffer/Line Driver
84110-Bit Transparent Latch 8439-Bit Transparent Latch
902Hex Buffer (TTL Interface) 906Open Drain Buffer (Active Pull Down)
908Dual High Voltage CMOS Driver 912Display Controller 6 Digit 8 Segment
914Hex Schmitt Trigger External Voltage Inputs 92216 Key Keyboard Encoder
92320 Key Keyboard Encoder 9254 Digit Counter Multiplexed 7 Segment Drive
2244Octal Tri-State Buffer with Resistor 2245Octal Tri-State Transceiver with Resistor
3245Octal Tri-State Translating Transceiver 3257Quad 2:1 Mux/Demux Bus Switch
3383Octal Bus Exchange Switch 338410-Bit Bus Switch
4002Dual 4-Input NOR Gate 4015Dual 4-Bit Serial-In/Parallel-Out Shift Register
4016Quad Bilateral Switches 4017Johnson Decade Counter with 10 Decoded Outputs
402014-Stage Binary Ripple Counter 40247-Stage Binary Ripple Counter
404012-Stage Binary Ripple Counter 4046Phase Locked Loop
4049Hex Inverting High-to-Low Level Shifter 4050Hex High-to-Low Level Shifter
40518-Channel Analog Multiplexer/Demultiplexer 4052Dual 4-Channel Analog Multiplexer/Demultiplexer
4053Triple 2-Channel Analog Multiplexer/Demultiplexer 4059Programmable Divide-By-N Counter
406014-Stage Binary Ripple Counter with Oscillator 4066Quad Bilateral Switches
406716-Channel Analog Multiplexer/Demultiplexer 4075Triple 3-Input OR Gate
40788-Input NOR/OR Gate 40948-Stage Shift-and-Store Bus Register
4245Octal Tri-State Translating Transceiver 4316Quad Bilateral Switches
43518-Channel Analog Multiplexer/Demultiplexer with Latch 4353Triple 2-Channel Analog Multiplexer/Demultiplexer with Latch
4511BCD To 7-Segment Latch/Decoder/Driver 45144-to-16 Line Decoder/Demultiplexer with Input Latches
45154-to-16 Line Decoder/Demultiplexer with Input Latches; Inverting 4518Dual Synchronous Up Counter
4520Dual 4-Bit Synchronous Binary Counter 4538Dual Retriggerable Precision Monostable Multivibrator
5555Programmable Delay Timer with Oscillator 6323Programmable Ripple Counter with Oscillator (3-State)
7014Hex Non-Inverting Precision Schmitt-Trigger 70309-Bit x 64-Word FIFO Register (3-State)
7046Phase-Locked-Loop with Lock Detector 7266Quad 2-Input EXCLUSIVE-NOR Gate
74034-Bit x 64-Word FIFO Register (3-State) 7540Octal Schmitt Trigger Buffer/Line Driver; Inverting (3-State)
7541Octal Schmitt Trigger Buffer/Line Driver (3-State) 7731Quad 64-Bit Static Shift Register
9114Nine Wide Schmitt Trigger Buffer; Open Drain Outputs; Inverting 9115Nine Wide Schmitt Trigger Buffer; Open Drain Outputs
9323Programmable Ripple Counter with Oscillator (3-State) 221068x8 Crosspoint Switch
401038-Bit Synchronous Binary Down Counter 401054-Bit x 16-Word FIFO Register

TTL Families
FamilyDescription FamilyDescription
74True TTL 74LLow power
74SSchottky 74HHigh speed
74LSLow power - Schottky 74ASAdvanced - Schottky
74ALSAdvanced - Low power - Schottky 74F(AST)Fast - (Advanced - Schottky)
74CCMOS...................check Vcc levels 74HC (U)High speed - CMOS (Unbuffered output)
74HCTHigh speed - CMOS - TTL inputs 74AHCAdvanced - High speed - CMOS
74AHCTAdvanced - High speed - CMOS - TTL inputs 74FCT (-A,-T,-AT)Fast - CMOS - TTL inputs (speed variations)
74ACAdvanced - CMOS 74ACTAdvanced - CMOS - TTL inputs
74FACTAC, ACT (Q) series 74ACQAdvanced - CMOS - Quiet outputs
74ACTQAdvanced - CMOS - TTL inputs - Quiet outputs

Bus Driver Families
FamilyDescription FamilyDescription
74ABTAdvanced - BiCMOS - Technology 74ABTEABT - Enhanced Transceiver Logic
74ABTHAdvanced - BiCMOS - Technology - bus Hold 74BCTBiCMOS - TTL inputs
74BTLBackplane - Transceiver - Logic (BiCMOS) 74FBFuturebus+
74GTLGunning - Transceiver - Logic 74GTLPGTL - Plus

Low Voltage Families
FamilyDescription FamilyDescription
74ALBAdvanced - Low Voltage - BiCMOS 74LV (U)Low - Voltage (Unbuffered output) (CMOS)
74LVC (R) (U)LV - CMOS (damping Resistor)(Unbuffered output) 74LVCHLow - Voltage - CMOS - bus Hold
74ALVCAdvanced - Low - Voltage - CMOS 74LVT (R) (U)LV - TTL (damping Resistor)(Unbuffered output) (BiCMOS)
74LVTZLow - Voltage - TTL - High Impedance power-up 74ALVC (R) ALVCMOS (bus Hold) (damping Resistor)
74ALVCHAdvanced - Low - Voltage - CMOS - bus Hold 74LCXLV - CMOS (operates with 3v and 5v supplies)
74VCXLV - CMOS (operates with 1.8v and 3.6v supplies

Standard Logic Competitive Position
Technology Type TI On Semi Fairchild Philips Toshiba IDT Pericom Hitachi



CMOSCD400089815190 30

HC/HCT2006877275 140


AHC/VHC42535755 63

LV43272447 24


LVC/LCX82275378 701272549
ALVC/VCX106164834 421115056


Bus Switch67