| Manufacturer | Part Number | Description |
|---|---|---|
Texas Instruments
| SN74LS33 | Quadruple 2-Input Positive-NOR Buffer |
Fairchild (now onsemi)
| 74LS33 | Quad 2-Input OR Gate |
Motorola Semiconductor (now NXP Semiconductors)
| SN74LS33 | QUAD 2-INPUT NOR BUFFER |
|
Motorola Semiconductor (now NXP Semiconductors)
| 74LS33 | QUAD 2-INPUT NOR BUFFER |
