| 155441 | 74ACT251SCX | 8-Input Multiplexer with 3-STATE Output | Fairchild Semiconductor |
| 155442 | 74ACT253 | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155443 | 74ACT253 | Dual 4-Input Multiplexer with TRI-STATE Outputs | National Semiconductor |
| 155444 | 74ACT253CW | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155445 | 74ACT253MTC | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155446 | 74ACT253MTCX | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155447 | 74ACT253PC | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155448 | 74ACT253SC | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155449 | 74ACT253SCX | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155450 | 74ACT253SJ | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155451 | 74ACT253SJX | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155452 | 74ACT257 | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155453 | 74ACT257 | Quad 2-Input Multiplexer with TRI-STATE Outputs | National Semiconductor |
| 155454 | 74ACT257 | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 155455 | 74ACT257 | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 155456 | 74ACT257B | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 155457 | 74ACT257B | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 155458 | 74ACT257CW | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155459 | 74ACT257M | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
|
| 155460 | 74ACT257M | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 155461 | 74ACT257MTC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155462 | 74ACT257MTCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155463 | 74ACT257MTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 155464 | 74ACT257MTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 155465 | 74ACT257PC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155466 | 74ACT257SC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155467 | 74ACT257SCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155468 | 74ACT257SJ | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155469 | 74ACT257SJX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155470 | 74ACT257TTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 155471 | 74ACT257TTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 155472 | 74ACT258 | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155473 | 74ACT258CW | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155474 | 74ACT258MTC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155475 | 74ACT258MTCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155476 | 74ACT258PC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155477 | 74ACT258SC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155478 | 74ACT258SCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155479 | 74ACT258SJ | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 155480 | 74ACT258SJX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
