7420: Dual 4-Input NAND Gate
Both 4-input gates may be used independently. On either gate, any input-low condition drives the output high. When all inputs are high, the output is low.
| Pin # | Pin Assignment |
|---|---|
| 1 | Input 1A |
| 2 | Input 1B |
| 3 | No Connection |
| 4 | Input 1C |
| 5 | Input 1D |
| 6 | Output 1 |
| 7 | Ground |
| 8 | Output 2 |
| 9 | Input 2A |
| 10 | Input 2B |
| 11 | No Connection |
| 12 | Input 2C |
| 13 | Input 2D |
| 14 | Power (+5V) |
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