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Signetics
Signetics - Low Power Schottky TTL 54LS00 - 74LS00
The Series 54LS/74LS Schottky TTL family features both Schottky-barrier-diode inputs and emitter inputs and utilizes full Schottky-barrier-diode clamping to achieve speeds comparable to Series 54/74 at one-fifth of the power. They retain the desirable features of, and are completely compatible with, most of the popular saturated logic circuits.
Select a Series Below
10K ECL DevicesBiploar LSI 2900 - 3000 & 8X00
Bipolar Memory 82S00, 82HS00, 82LS00
Controller/Peripheral 68172
DTL 100 - 400 & CS700, S8000
Linear 500 & 1400
Low Power Schottky TTL 54LS00 - 74LS00
LSI 9400
PLS, PLUS, PLHS
Schottky TTL 54S00 - 74S00
TTL 5400 - 7400
TTL 8200 & 8H00
TTL 8800
TTL 9000
TTL III 54H00 and 74H00
TTL Interface 8T00
Utilogic II 300
| Original # | Lansdale # | |
| N74LS00 | SL74LS00 | |
| N74LS01 | SL74LS01 | |
| N74LS02 | SL74LS02 | |
| N74LS04 | SL74LS04 | |
| N74LS05 | SL74LS05 | |
| N74LS08 | SL74LS08 | |
| N74LS09 | SL74LS09 | |
| N74LS10 | SL74LS10 | |
| N74LS107 | SL74LS107 | |
| N74LS109 | SL74LS109 | |
| N74LS112 | SL74LS112 | |
| N74LS113 | SL74LS113 | |
| N74LS125 | SL74LS125 | |
| N74LS125A | SL74LS125A | |
| N74LS126A | SL74LS126A | |
| N74LS13 | SL74LS13 | |
| N74LS132 | SL74LS132 | |
| N74LS138 | SL74LS138 | |
| N74LS139 | SL74LS139 | |
| N74LS14 | SL74LS14 | |
| N74LS151 | SL74LS151 | |
| N74LS153 | SL74LS153 | |
| N74LS154 | SL74LS154 | |
| N74LS155 | SL74LS155 | |
| N74LS157 | SL74LS157 | |
| N74LS158 | SL74LS158 | |
| N74LS160A | SL74LS160A | |
| N74LS161A | SL74LS161A | |
| N74LS162A | SL74LS162A | |
| N74LS163A | SL74LS163A | |
| N74LS164 | SL74LS164 | |
| N74LS169A | SL74LS169A | |
| N74LS170 | SL74LS170 | |
| N74LS173 | SL74LS173 | |
| N74LS174 | SL74LS174 | |
| N74LS175 | SL74LS175 | |
| N74LS181 | SL74LS181 | |
| N74LS191 | SL74LS191 | |
| N74LS192 | SL74LS192 | |
| N74LS193 | SL74LS193 | |
| N74LS194A | SL74LS194A | |
| N74LS20 | SL74LS20 | |
| N74LS21 | SL74LS21 | |
| N74LS240 | SL74LS240 | |
| N74LS241 | SL74LS241 | |
| N74LS242 | SL74LS242 | |
| N74LS243 | SL74LS243 | |
| N74LS244 | SL74LS244 | |
| N74LS245 | SL74LS245 | |
| N74LS251 | SL74LS251 | |
| N74LS253 | SL74LS253 | |
| N74LS256 | SL74LS256 | |
| N74LS257A | SL74LS257A | |
| N74LS258A | SL74LS258A | |
| N74LS259 | SL74LS259 | |
| N74LS26 | SL74LS26 | |
| N74LS260 | SL74LS260 | |
| N74LS266 | SL74LS266 | |
| N74LS27 | SL74LS27 | |
| N74LS273 | SL74LS273 | |
| N74LS283 | SL74LS283 | |
| N74LS295B | SL74LS295B | |
| N74LS298 | SL74LS298 | |
| N74LS30 | SL74LS30 | |
| N74LS32 | SL74LS32 | |
| N74LS33 | SL74LS33 | |
| N74LS352 | SL74LS352 | |
| N74LS353 | SL74LS353 | |
| N74LS363 | SL74LS363 | |
| N74LS365A | SL74LS365A | |
| N74LS366A | SL74LS366A | |
| N74LS367A | SL74LS367A | |
| N74LS368A | SL74LS368A | |
| N74LS37 | SL74LS37 | |
| N74LS373 | SL74LS373 | |
| N74LS374 | SL74LS374 | |
| N74LS377 | SL74LS377 | |
| N74LS378 | SL74LS378 | |
| N74LS38 | SL74LS38 | |
| N74LS390 | SL74LS390 | |
| N74LS393 | SL74LS393 | |
| N74LS395A | SL74LS395A | |
| N74LS40 | SL74LS40 | |
| N74LS42 | SL74LS42 | |
| N74LS445 | SL74LS445 | |
| N74LS490 | SL74LS490 | |
| N74LS51 | SL74LS51 | |
| N74LS534 | SL74LS534 | |
| N74LS54 | SL74LS54 | |
| N74LS540 | SL74LS540 | |
| N74LS541 | SL74LS541 | |
| N74LS569A | SL74LS569A | |
| N74LS620 | SL74LS620 | |
| N74LS621 | SL74LS621 | |
| N74LS622 | SL74LS622 | |
| N74LS623 | SL74LS623 | |
| N74LS640 | SL74LS640 | |
| N74LS640-1 | SL74LS640-1 | |
| N74LS641 | SL74LS641 | |
| N74LS641-1 | SL74LS641-1 | |
| N74LS642 | SL74LS642 | |
| N74LS642-1 | SL74LS642-1 | |
| N74LS645 | SL74LS645 | |
| N74LS645-1 | SL74LS645-1 | |
| N74LS670 | SL74LS670 | |
| N74LS74A | SL74LS74A | |
| N74LS75 | SL74LS75 | |
| N74LS76 | SL74LS76 | |
| N74LS83A | SL74LS83A | |
| N74LS85 | SL74LS85 | |
| N74LS86 | SL74LS86 | |
| N74LS92 | SL74LS92 | |
| N74LS93 | SL74LS93 | |
| N74LS95B | SL74LS95B | |
| N74LS96 | SL74LS96 | |
| S54LS00 | SL54LS00 | |
| S54LS01 | SL54LS01 | |
| S54LS02 | SL54LS02 | |
| S54LS04 | SL54LS04 | |
| S54LS05 | SL54LS05 | |
| S54LS08 | SL54LS08 | |
| S54LS09 | SL54LS09 | |
| S54LS10 | SL54LS10 | |
| S54LS107 | SL54LS107 | |
| S54LS109 | SL54LS109 | |
| S54LS112 | SL54LS112 | |
| S54LS113 | SL54LS113 | |
| S54LS125 | SL54LS125 | |
| S54LS125A | SL54LS125A | |
| S54LS126A | SL54LS126A | |
| S54LS13 | SL54LS13 | |
| S54LS132 | SL54LS132 | |
| S54LS138 | SL54LS138 | |
| S54LS139 | SL54LS139 | |
| S54LS14 | SL54LS14 | |
| S54LS151 | SL54LS151 | |
| S54LS153 | SL54LS153 | |
| S54LS154 | SL54LS154 | |
| S54LS155 | SL54LS155 | |
| S54LS157 | SL54LS157 | |
| S54LS158 | SL54LS158 | |
| S54LS160A | SL54LS160A | |
| S54LS161A | SL54LS161A | |
| S54LS162A | SL54LS162A | |
| S54LS163A | SL54LS163A | |
| S54LS164 | SL54LS164 | |
| S54LS169A | SL54LS169A | |
| S54LS170 | SL54LS170 | |
| S54LS173 | SL54LS173 | |
| S54LS174 | SL54LS174 | |
| S54LS175 | SL54LS175 | |
| S54LS181 | SL54LS181 | |
| S54LS191 | SL54LS191 | |
| S54LS192 | SL54LS192 | |
| S54LS193 | SL54LS193 | |
| S54LS194A | SL54LS194A | |
| S54LS20 | SL54LS20 | |
| S54LS21 | SL54LS21 | |
| S54LS240 | SL54LS240 | |
| S54LS241 | SL54LS241 | |
| S54LS242 | SL54LS242 | |
| S54LS243 | SL54LS243 | |
| S54LS244 | SL54LS244 | |
| S54LS245 | SL54LS245 | |
| S54LS251 | SL54LS251 | |
| S54LS253 | SL54LS253 | |
| S54LS256 | SL54LS256 | |
| S54LS257A | SL54LS257A | |
| S54LS258A | SL54LS258A | |
| S54LS259 | SL54LS259 | |
| S54LS26 | SL54LS26 | |
| S54LS260 | SL54LS260 | |
| S54LS266 | SL54LS266 | |
| S54LS27 | SL54LS27 | |
| S54LS273 | SL54LS273 | |
| S54LS283 | SL54LS283 | |
| S54LS295B | SL54LS295B | |
| S54LS298 | SL54LS298 | |
| S54LS30 | SL54LS30 | |
| S54LS32 | SL54LS32 | |
| S54LS33 | SL54LS33 | |
| S54LS352 | SL54LS352 | |
| S54LS353 | SL54LS353 | |
| S54LS363 | SL54LS363 | |
| S54LS365A | SL54LS365A | |
| S54LS366A | SL54LS366A | |
| S54LS367A | SL54LS367A | |
| S54LS368A | SL54LS368A | |
| S54LS37 | SL54LS37 | |
| S54LS373 | SL54LS373 | |
| S54LS374 | SL54LS374 | |
| S54LS377 | SL54LS377 | |
| S54LS378 | SL54LS378 | |
| S54LS38 | SL54LS38 | |
| S54LS390 | SL54LS390 | |
| S54LS393 | SL54LS393 | |
| S54LS395A | SL54LS395A | |
| S54LS40 | SL54LS40 | |
| S54LS42 | SL54LS42 | |
| S54LS445 | SL54LS445 | |
| S54LS490 | SL54LS490 | |
| S54LS51 | SL54LS51 | |
| S54LS534 | SL54LS534 | |
| S54LS54 | SL54LS54 | |
| S54LS540 | SL54LS540 | |
| S54LS541 | SL54LS541 | |
| S54LS620 | SL54LS620 | |
| S54LS621 | SL54LS621 | |
| S54LS622 | SL54LS622 | |
| S54LS623 | SL54LS623 | |
| S54LS640 | SL54LS640 | |
| S54LS640-1 | SL54LS640-1 | |
| S54LS641 | SL54LS641 | |
| S54LS641-1 | SL54LS641-1 | |
| S54LS642 | SL54LS642 | |
| S54LS642-1 | SL54LS642-1 | |
| S54LS645 | SL54LS645 | |
| S54LS645-1 | SL54LS645-1 | |
| S54LS670 | SL54LS670 | |
| S54LS74A | SL54LS74A | |
| S54LS75 | SL54LS75 | |
| S54LS76 | SL54LS76 | |
| S54LS83A | SL54LS83A | |
| S54LS85 | SL54LS85 | |
| S54LS86 | SL54LS86 | |
| S54LS92 | SL54LS92 | |
| S54LS93 | SL54LS93 | |
| S54LS95B | SL54LS95B | |
| S54LS96 | SL54LS96 |
| Package Types |
| C - 14-LEAD DUAL INLINE (1/4" X 3/4") |
| D - 14-LEAD FLAT PACK (1/4" X 3/8") |
| E - 16-LEAD DUAL INLINE (1/4" X 7/8") |
| F - 16-LEAD FLAT PACK (1/4" X 3/8") |
| J - 24-LEAD DUAL INLINE (1/2" X 1 1/4") |
| K - 24-LEAD FLAT PACK (3/8" X 5/8") |
| R - 20-LEAD DUAL INLINE (1/4" X 1 1/16") |
| Rating | Value | Unit |
| Supply Voltage - VCC | +7.0 | V |
| Input Voltage Range - VI | -0.5 to +7.0 | V |
| Output Voltage - Vout | +5.5 | V |
| Operating Temperature Range | -55 to +125 | ?C |
| Storage Temperature Range | -65 to +150 | ?C |
| ?C |
| FUNCTION | TYPE/PKG | Supply Current/typmA | Propagation Delay/typns |
| Quad 2-Input NAND Gate | 54LS00/C,D | 1.6 | 9.5 |
| Quad 2-Input NAND Gate (O.C.) | 54LS01/C,D | 1.6 | 16 |
| Quad 2-Input NOR Gate | 54LS02/C,D | 2.2 | 10 |
| Hex Inverter | 54LS04/C,D | 2.4 | 9.5 |
| Hex Inverter (Open Collector) | 54LS05/C,D | 2.4 | 17 |
| Quad 2-Input AND Gate | 54LS08/C,D | 3.4 | 9 |
| Quad 2-Input AND Gate (O.C.) | 54LS09/C,D | - | - |
| Triple 3-Input NAND Gate | 54LS10/C,D | 1.2 | 10 |
| Triple 3-Input AND Gate | 54LS11/C,D | 2.6 | 9 |
| Dual 4-Input NAND Schmitt Trigger | 54LS13/C,D | 3.5 | 17 |
| Hex Inverter Schmitt Trigger | 54LS14/C,D | 10 | 15 |
| Dual 4-Input NAND Gate | 54LS20/C,D | 0.8 | 10 |
| Dual 4-Input AND Gate | 54LS21/C,D | 1.7 | 9 |
| Quad 2-Input NAND Gate (O.C.) | 54LS26/C,D | 1.6 | 16 |
| Triple 3-Input NOR Gate | 54LS27/C,D | 2.7 | 10 |
| 8-Input NAND Gate | 54LS30/C,D | 0.5 | 11 |
| 2-Input OR Gate | 54LS32/C,D | 4.0 | 14 |
| Quad 2-Input NOR Buffer (O.C.) | 54LS33/C,D | 4.0 | 19 |
| Quad 2-Input NAND Buffer | 54LS37/C,D | 3.5 | 12 |
| Quad 2-Input NAND Buffer (O.C.) | 54LS38/C,D | 3.5 | 19 |
| Dual 4-Input NAND Buffer | 54LS40/C,D | 1.8 | 12 |
| BCD-to-Decimal Decoder (1-of-10) | 54LS42/E,F | 7.0 | 18 |
| Dual 2-Wide 2-Input AND-OR-INVERT Gate | 54LS51/C,D | 1.1 | 12 |
| 4-Wide 2-Input AND-OR-INVERT Gate | 54LS54/C,D | 0.9 | 12 |
| Dual J-K Flip-Flop | 54LS73/C,D | 4.0 | - |
| Dual D-Type Flip-Flop | 54LS74A/C,D | 4.0 | - |
| Dual 2-Bit Transparent Latch | 54LS75/E,F | 6.3 | 15 |
| Dual J-K Flip-Flop | 54LS76/E,F | 4.0 | - |
| 4-Bit Full Adder | 54LS83A/E,F | 19.0 | - |
| 4-Bit Magnitude Comparator | 54LS85/E,F | 10.0 | 23 |
| Quad 2-Input Exclusive-OR Gate | 54LS86/C,D | 6.1 | 10 |
| Decade Counter | 54LS90/C,D | 9.0 | - |
| Divide-By-Twelve Counter | 54LS92/C,D | 9.0 | - |
| 4-Bit Binary Ripple Counter | 54LS93/C,D | 9.0 | - |
| 4-Bit Shift Register | 54LS95B/C,D | 13.0 | - |
| 5-Bit Shift Register | 54LS96/E,F | 12.0 | 25 |
| Dual J-K Flip-Flop | 54LS107/C,D | 4.0 | - |
| Dual J-K Positive Edge-Triggered Flip-Flop | 54LS109/E,F | 4.0 | - |
| Dual J-K Edge-Triggered Flip-Flop | 54LS112/E,F | 4.0 | - |
| Dual J-K Edge-Triggered Flip-Flop | 54LS113/C,D | 4.0 | - |
| Quad 3-State Buffer | 54LS125/C,D | 11.0 | 8 |
| Quad 3-State Buffer | 54LS125A/C,D | 11.0 | 8 |
| Quad 3-State Buffer | 54LS126A/C,D | 12.0 | 9 |
| Quad 2-Input NAND Schmitt Trigger | 54LS132/C,D | 7.0 | 15 |
| Quad 2-Input Exclusive-OR Gate (O.C.) | 54LS136/C,D | 6.1 | 18 |
| 1-of-8 Decoder/Demultiplexer | 54LS138/E,F | 6.3 | 20 |
| Dual 1-of-4 Decoder/Demultiplexer | 54LS139/E,F | 6.8 | 19 |
| 8-Input Multiplexer | 54LS151/E,F | 6.0 | 12 |
| Dual 4-Line to 1-Line Multiplexer | 54LS153/E,F | 6.2 | 18 |
| 1-of-16 Decoder/Demultiplexer | 54LS154/J,K | 9.0 | 15 |
| Dual 2-Line to 4-Line Decoder/Demultiplexer | 54LS155/E,F | 6.1 | 17 |
| Dual 2-Line to 4-Line Decoder/Demultiplexer (O.C.) | 54LS156/E,F | 6.1 | 31 |
| Quad 2-Input Data Selector/Multiplexer | 54LS157/E,F | 9.7 | 13 |
| Quad 2-Input Data Selector/Multiplexer (Inverted) | 54LS158/E,F | 4.8 | 13 |
| BCD Decade Counter | 54LS160A/E,F | 19.0 | - |
| 4-Bit Binary Counter | 54LS161A/E,F | 19.0 | - |
| BCD Decade Counter | 54LS162A/E,F | 19.0 | - |
| 4-Bit Binary Counter | 54LS163A/E,F | 19.0 | - |
| 8-Bit Serial-In Parallel-Out Shift Register | 54LS164/C,D | 16.0 | - |
| 4-Bit Up/Down Synchronous Counter | 54LS169A/E,F | 20.0 | - |
| 4 x 4 Register File (Open Collector) | 54LS170/E,F | 25.0 | 20 |
| Quad D-Type Flip-Flop | 54LS173/E,F | 20.0 | - |
| Hex D Flip-Flop | 54LS174/E,F | 16.0 | - |
| Quad D Flip-Flop | 54LS175/E,F | 11.0 | - |
| 4-Bit Arithmetic Logic Unit | 54LS181/J,K | 21.0 | 22 |
| Presettable 4-Bit Binary Up/Down Counter | 54LS191/E,F | 20.0 | - |
| Presettable BCD Decade Up/Down Counter | 54LS192/E,F | 19.0 | - |
| Presettable 4-Bit Binary Up/Down Counter | 54LS193/E,F | 19.0 | - |
| 4-Bit Bidirectional Universal Shift Register | 54LS194A/E,F | 15.0 | - |
| Presettable 4-Bit Binary Ripple Counter | 54LS197/C,D | 16.0 | - |
| Octal Inverter Buffer (3-State) | 54LS240/R | 24.0 | 11 |
| Octal Buffer (3-State) | 54LS241/R | 25.0 | 12 |
| Quad Inverting Transceiver (3-State) | 54LS242/C,D | 27.0 | 10 |
| Quad Transceiver (3-State) | 54LS243/C,D | 28.0 | 12 |
| Octal Buffer (3-State) | 54LS244/R | 25.0 | 12 |
| Octal Transceiver (3-State) | 54LS245/R | 58.0 | 8 |
| 8-Input Multiplexer (3-State) | 54LS251/E,F | 9.0 | 18 |
| Dual 4-Input Multiplexer (3-State) | 54LS253/E,F | 8.0 | 15 |
| Dual 4-Bit Addressable Latch | 54LS256/E,F | 22.0 | 19 |
| Quad 2-Line to 1-Line Data Selector/Multiplexer (3-State) | 54LS257A/E,F | 9.0 | 13 |
| Quad 2-Line to 1-Line Data Selector/Multiplexer (3-State) | 54LS258A/E,F | 9.0 | 13 |
| 8-Bit Addressable Latch | 54LS259/E,F | 22.0 | 19 |
| Dual 5-Input NOR Gate | 54LS260/C,D | 4.0 | 9 |
| Quad 2-Input Exclusive-NOR Gate | 54LS266/C,D | 8.0 | 18 |
| Octal D Flip-Flop | 54LS273/R | 17.0 | - |
| 4-Bit Full Adder w/Fast Carry | 54LS283/E,F | 20.0 | 13 |
| 4-Bit Shift Register w/3-State Outputs | 54LS295B/C,D | 17.0 | - |
| Quad 2-Port Register | 54LS298/E,F | 13.0 | 19 |
| 256-Bit TTL RAM (256x1) | 54LS301/E,F | - | - |
| Dual 4-Line to 1-Line Multiplexer | 54LS352/E,F | 6.2 | 15 |
| Dual 4-Input Multiplexer (3-State) | 54LS353/E,F | 8.0 | 12 |
| Octal Transparent Latch (3-State) | 54LS363/R | 42.0 | 19 |
| Octal D Type Flip-Flop (3-State) | 54LS364/R | 42.0 | - |
| Hex Buffer/Driver (3-State) | 54LS365A/E,F | 14.0 | 10 |
| Hex Inverter Buffer (3-State) | 54LS366A/E,F | 12.0 | 10 |
| Hex Buffer/Driver (3-State) | 54LS367A/E,F | 14.0 | 10 |
| Hex Inverter Buffer (3-State) | 54LS368A/E,F | 12.0 | 10 |
| Octal Transparent Latch w/3-State Outputs | 54LS373/R | 24.0 | 19 |
| Octal D Type Flip-Flop w/3-State Outputs | 54LS374/R | 27.0 | 19 |
| Dual 2-Bit Transparent Latch | 54LS375/E,F | 6.3 | 12 |
| Octal D Type Flip-Flop w/Clock Enable | 54LS377/R | 20.0 | - |
| Hex D Type Flip-Flop w/Clock Enable | 54LS378/E,F | 15.0 | - |
| Dual Decade Ripple Counter | 54LS390/E,F | 15.0 | - |
| Dual 4-Bit Binary Ripple Counter | 54LS393/C,D | 15.0 | - |
| 4-Bit Cascadable Shift Register w/3-State Outputs | 54LS395A/E,F | 19.0 | - |
| BCD-to-Decimal Decoder/Driver (O.C.) | 54LS445/E,F | 7.0 | 39 |
| Dual BCD Decade Ripple Counter | 54LS490/E,F | 15.0 | - |
| Inverting Octal D Latch (3-State) | 54LS533/R | - | - |
| Inverting Octal D Flip-Flop (3-State) | 54LS534/R | - | - |
| Octal Buffer/Line Driver (3-State) | 54LS540/R | 22.0 | 9 |
| Octal Buffer/Line Driver (3-State) | 54LS541/R | 23.0 | 10 |
| 4-Bit Binary Up/Down Synchronous Counter (3-State) | 54LS569A/R | 28.0 | - |
| Inverting Octal Bus Transceiver (3-State) | 54LS620/R | 73.6 | 9 |
| Non-Inverting Octal Bus Transceiver (O.C.) | 54LS621/R | 54.5 | 19 |
| Inverting Octal Bus Transceiver (O.C.) | 54LS622/R | 54.5 | 19 |
| Non-Inverting Octal Bus Transceiver (3-State) | 54LS623/R | 73.6 | 9 |
| Inverting Octal Bus Transceiver (3-State) | 54LS640/R | 58.0 | 7 |
| Inverting Octal Bus Transceiver (3-State) | 54LS640-1/R | 58.0 | 7 |
| Octal Bus Transceiver (O.C.) | 54LS641/R | 58.0 | 17 |
| Octal Bus Transceiver (O.C.) | 54LS641-1/R | 58.0 | 17 |
| Octal Bus Transceiver (O.C.) | 54LS642/R | 58.0 | 17 |
| Octal Bus Transceiver (O.C.) | 54LS642-1/R | 58.0 | 17 |
| Octal Bus Transceiver (O.C.) | 54LS645/R | 58.0 | 10 |
| Octal Bus Transceiver (O.C.) | 54LS645-1/R | 58.0 | 10 |
| 4 x 4 Register File (3-State) | 54LS670/E,F | 30.0 | 25 |
| Bit Stream Manager | 74LS1801/J | - | - |
| 74LS1801/J | - | - |
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