| Pin # | Type | Description |
| 1 | Input | Input to the first NOR gate. |
| 2 | Input | Input to the first NOR gate. |
| 3 | Input | Input to the second NOR gate. |
| 4 | Input | Input to the second NOR gate. |
| 5 | Input | Input to the second NOR gate. |
| 6 | Output | Output from the second NOR gate. |
| 7 | Power | Connect to ground (GND). |
| 8 | Output | Output from the third NOR gate. |
| 9 | Input | Input to the third NOR gate. |
| 10 | Input | Input to the third NOR gate. |
| 11 | Input | Input to the third NOR gate. |
| 12 | Output | Output from the first NOR gate. |
| 13 | Input | Input to the first NOR gate. |
| 14 | Power | Positive power supply (VCC). Connect to +5V power. |