| Manufacturer | Part Number | Description |
|---|---|---|
Renesas
| HD74LS640P | Octal Bus Transceivers |
Hitachi Semiconductor (now Renesas)
| HD74LS640-1 | Octal Bus Transceivers |
|
Hitachi Semiconductor (now Renesas)
| HD74LS640 | Octal Bus Transceivers |
|
Renesas
| HD74LS640 | Octal Bus Transceivers |
