| Manufacturer | Part Number | Description |
|---|---|---|
National Semiconductor (now Texas Instruments)
| 74F251A | 8-Input Multiplexer |
Philips Semiconductors (now NXP Semiconductors)
| 74F251A | 8-input multiplexer |
Fairchild (now onsemi)
| 74F251A | 8-Input Multiplexer |
