| 型号 | 厂商 | 描述 |
| 74ls195 2 3 4 5 6 7 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |
| 74ls195 2 3 4 5 6 7 |
Motorola, Inc. | UNIVERSAL 4-BIT SHIFT REGISTER |
| 74ls196 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
Texas Instruments, Inc. | 50/30/100-MHz [RESETTABLE DECADE OR BINARY COUNTERS/LATCHES |
| 74ls196 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
Motorola, Inc. | 4-STAGE PRESETTABLE RIPPLE COUNTERS |
| 74ls20 2 3 4 5 |
Hitachi,Ltd. | Dual 4-input Positive NAND Gates |
| 74ls20 2 3 4 5 |
Texas Instruments, Inc. | DUAL 4-INPUT POSITIVE-NAND GATES |
| 74ls20 2 3 4 5 |
National Semiconductor Corporation | Dual 4-Input NAND Gates |
| 74ls20 2 3 4 5 |
Motorola, Inc. | DUAL 4-INPUT NAND GATE |
| 74ls20 2 3 4 5 |
Fairchild Semiconductor Corporation | Dual 4-Input NAND Gate |
| 74ls21 2 3 4 5 |
Hitachi,Ltd. | Dual 4-input Positive AND Gates |
| 74ls21 2 3 4 5 |
Texas Instruments, Inc. | DUAL 4-INPUT POSITIVE-AND GATES |
| 74ls21 2 3 4 5 |
Electronic Theatre Controls, Inc. | DUAL 4-INPUT POSITIVE AND GATE |
| 74ls21dc 2 3 4 5 |
Electronic Theatre Controls, Inc. | DUAL 4-INPUT POSITIVE AND GATE |
| 74ls21fc 2 3 4 5 |
Electronic Theatre Controls, Inc. | DUAL 4-INPUT POSITIVE AND GATE |
| 74ls21pc 2 3 4 5 |
Electronic Theatre Controls, Inc. | DUAL 4-INPUT POSITIVE AND GATE |
| 74ls22 2 3 4 5 6 7 |
Texas Instruments, Inc. | DUAL 4 INPUT POSITIVE NAND GATES WITH OPEN COLLECTOR OUTPUTS |
| 74ls240 2 3 4 5 |
Hitachi,Ltd. | Octal Buffers/Line Drivers/Line Receivers(inverted three-state outputs) |
| 74ls240 2 3 4 5 |
Texas Instruments, Inc. | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 74ls240 2 3 4 5 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |
| 74ls240 2 3 4 5 |
National Semiconductor Corporation | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 74ls240 2 3 4 5 |
Fairchild Semiconductor Corporation | Octal 3-STATE Buffer/Line Driver/Line Receiver |
| 74ls241 2 3 4 5 |
Hitachi,Ltd. | Octal Buffers/Line Drivers/Line Receivers |
| 74ls241 2 3 4 5 |
Texas Instruments, Inc. | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 74ls241 2 3 4 5 |
National Semiconductor Corporation | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 74ls241 2 3 4 5 |
Motorola, Inc. | OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS |
| 74ls241 2 3 4 5 |
Fairchild Semiconductor Corporation | Octal 3-STATE Buffer/Line Driver/Line Receiver |
| 74ls244 2 3 4 5 |
Hitachi,Ltd. | Octal Buffers/Line Drivers/Line Receivers(non inverted three-state outputs) |
| 74ls244 2 3 4 5 |
Texas Instruments, Inc. | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 74ls244 2 3 4 5 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |
| 74ls244 2 3 4 5 |
Mitsubishi Electric Corporation | OCTAL BUFFER/LINE DRIVERS WITH 3-STATE OUTPUT(NONINVERTED) |
| 74ls244 2 3 4 5 |
Fairchild Semiconductor Corporation | Octal 3-STATE Buffer/Line Driver/Line Receiver |
| 74ls245b1 2 3 4 5 6 7 8 |
Electronic Theatre Controls, Inc. | Octal bus transceiver |
| 74ls245 2 3 4 |
ON SEMICONDUCTOR | Octal Bus Transceivers |
| 74ls245 2 3 4 |
National Semiconductor Corporation | TRI-STATE Octal Bus Transceiver |
| 74ls245 2 3 4 |
Fairchild Semiconductor Corporation | 3-STATE Octal Bus Transceiver |
| 74ls247 2 3 4 5 6 7 |
Hitachi,Ltd. | 8CD-to-Seven-Segment Decoders/Drivers(with 15V outputs) |
| 74ls247 2 3 4 5 6 7 |
Texas Instruments, Inc. | BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS |
| 74ls247 2 3 4 5 6 7 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |
| 74ls251 2 3 4 5 6 |
Hitachi,Ltd. | 1 of 8 Data Selectors/Multiplexers(with strobe and three-state outputs) |
| 74ls251 2 3 4 5 6 |
Texas Instruments, Inc. | DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| 74ls251 2 3 4 5 6 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |
| 74ls251 2 3 4 5 6 |
Fairchild Semiconductor Corporation | 3-STATE 1-of-8 Line Data Selector/Multiplexer |
| 74ls257 2 3 4 5 6 |
Hitachi,Ltd. | Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs) |
| 74ls257 2 3 4 5 6 |
Texas Instruments, Inc. | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS |
| 74ls257 2 3 4 5 6 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |
| 74ls257 2 3 4 5 6 |
National Semiconductor Corporation | TRI-STATE Quad 2-Data Selectors/Multiplexers |
| 74ls257 2 3 4 5 6 |
Fairchild Semiconductor Corporation | 3-STATE Quad 2-Data Selectors/Multiplexers |
| 74ls273 2 3 4 5 6 |
Hitachi,Ltd. | Octal D-type Positive-edge-triggered Flip-Flops(with Clear) |
| 74ls273 2 3 4 5 6 |
Texas Instruments, Inc. | OCTAL D-TYPE FLIP-FLOP WITH CLEAR |
| 74ls273 2 3 4 5 6 |
ON SEMICONDUCTOR | LOW POWER SCHOTTKY |