| S2 | 1 • | 16 | Vcc |
| B2 | 2 | 15 | B3 |
| A2 | 3 | 14 | A3 |
| S1 | 4 | 13 | S3 |
| A1 | 5 | 12 | A4 |
| B1 | 6 | 11 | B4 |
| CIN | 7 | 10 | S4 |
| GND | 8 | 9 | COUT |
| Pin | Symbol | Description |
|---|---|---|
| 1 | S2 | sum output |
| 2 | B2 | B operand input |
| 3 | A2 | A operand input |
| 4 | S1 | sum output |
| 5 | A1 | A operand input |
| 6 | B1 | B operand input |
| 7 | CIN | carry input |
| 8 | GND | ground |
| 9 | COUT | carry output |
| 10 | S4 | sum output |
| 11 | B4 | B operand input |
| 12 | A4 | A operand input |
| 13 | S3 | sum output |
| 14 | A3 | A operand input |
| 15 | B3 | B operand input |
| 16 | Vcc | supply voltage |
| Parameter | Value | Unit |
|---|---|---|
| Propagation delay, CIN to S1 | 16 (74HC) 15 (74HCT) | ns |
| Propagation delay, CIN to S2 | 18 (74HC) 21 (74HCT) | ns |
| Propagation delay, CIN to S3 | 20 (74HC) 23 (74HCT) | ns |
| Propagation delay, CIN to S4 | 23 (74HC) 27 (74HCT) | ns |
| Propagation delay, An, Bn to Sn | 21 (74HC) 25 (74HCT) | ns |
| Propagation delay, CIN to COUT | 20 (74HC) 23 (74HCT) | ns |
| Propagation delay, An, Bn to COUT | 20 (74HC) 24 (74HCT) | ns |
Note: Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information.