| Manufacturer | Part Number | Description |
|---|---|---|
Texas Instruments
| SN74LS540 | Octal Buffers And Line Driver |
| SN74LS540 | Octal buffer/line driver | |
Texas Instruments
| SN74LS54 | 4-Wide AND-OR-Invert Gate |
| SN74LS541 | Octal buffer/line driver | |
Texas Instruments
| SN74LS541 | Octal Buffers And Line Driver |
| SN74LS541 | Octal Buffer/Line Driver | |
Motorola Semiconductor (now NXP Semiconductors)
| SN74LS54 | 3-2-2-3-INPUT AND-OR-INVERT GATE |