| Manufacturer | Part Number | Description |
|---|---|---|
Texas Instruments
| SN74LS257B | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS |
Motorola Semiconductor (now NXP Semiconductors)
| SN74LS257B | QUAD 2-INPUT MULTIPLEXER |
onsemi
| SN74LS257B | Quad 2-Input Multiplexer |
