| Manufacturer | Part Number | Description |
|---|---|---|
Motorola Semiconductor (now NXP Semiconductors) |
SN74LS20 | DUAL 4-INPUT NAND GATE |
Motorola Semiconductor (now NXP Semiconductors) |
SN74LS20N | DUAL 4-INPUT NAND GATE |
Texas Instruments |
SN74LS20 | Dual 4-Input Positive-NAND Gate |