| Manufacturer | Part Number | Description |
|---|---|---|
National Semiconductor (now Texas Instruments)
| 54AC257 | Quad 2-Input Multiplexer |
Texas Instruments
| CD54AC257 | Quad 2-Input Multiplexer |
|
National Semiconductor (now Texas Instruments)
| MN54AC257-X | Quad 2 Input Multiplexer |
|
Texas Instruments
| 54AC257 | Quad 2-Input Multiplexer |
