| 163641 | 74HC27BQ | Triple 3-input NOR gate | NXP Semiconductors |
| 163642 | 74HC27BQ-Q100 | Triple 3-input NOR gate | Nexperia |
| 163643 | 74HC27BQ-Q100 | Triple 3-input NOR gate | NXP Semiconductors |
| 163644 | 74HC27D | Triple 3-input NOR gate | Nexperia |
| 163645 | 74HC27D | Triple 3-input NOR gate | NXP Semiconductors |
| 163646 | 74HC27D | 74HC/HCT27; Triple 3-input NOR gate | Philips |
| 163647 | 74HC27D-Q100 | Triple 3-input NOR gate | Nexperia |
| 163648 | 74HC27D-Q100 | Triple 3-input NOR gate | NXP Semiconductors |
| 163649 | 74HC27DB | Triple 3-input NOR gate | Nexperia |
| 163650 | 74HC27DB | Triple 3-input NOR gate | NXP Semiconductors |
| 163651 | 74HC27DB | 74HC/HCT27; Triple 3-input NOR gate | Philips |
| 163652 | 74HC27N | Triple 3-input NOR gate | NXP Semiconductors |
| 163653 | 74HC27N | 74HC/HCT27; Triple 3-input NOR gate | Philips |
| 163654 | 74HC27PW | Triple 3-input NOR gate | Nexperia |
| 163655 | 74HC27PW | Triple 3-input NOR gate | NXP Semiconductors |
| 163656 | 74HC27PW | 74HC/HCT27; Triple 3-input NOR gate | Philips |
| 163657 | 74HC27PW-Q100 | Triple 3-input NOR gate | Nexperia |
| 163658 | 74HC27PW-Q100 | Triple 3-input NOR gate | NXP Semiconductors |
| 163659 | 74HC280 | 9-bit odd/even parity generator/checker | Philips |
|
| 163660 | 74HC280D | 9-bit odd/even parity generator/checker | Nexperia |
| 163661 | 74HC280D | 9-bit odd/even parity generator/checker | NXP Semiconductors |
| 163662 | 74HC280D | 74HC/HCT280; 9-bit odd/even parity generator/checker | Philips |
| 163663 | 74HC280N | 9-bit odd/even parity generator/checker | NXP Semiconductors |
| 163664 | 74HC280N | 74HC/HCT280; 9-bit odd/even parity generator/checker | Philips |
| 163665 | 74HC280U | 9-bit odd/even parity generator/checker | Philips |
| 163666 | 74HC283 | 4-bit binary full adder with fast carry | Philips |
| 163667 | 74HC283D | 4-bit binary full adder with fast carry | NXP Semiconductors |
| 163668 | 74HC283D | 74HC283; 4-bit binary full adder with fast carry | Philips |
| 163669 | 74HC283DB | 4-bit binary full adder with fast carry | NXP Semiconductors |
| 163670 | 74HC283DB | 74HC283; 4-bit binary full adder with fast carry | Philips |
| 163671 | 74HC283N | 4-bit binary full adder with fast carry | NXP Semiconductors |
| 163672 | 74HC283N | 74HC283; 4-bit binary full adder with fast carry | Philips |
| 163673 | 74HC283NB | 4-bit binary full adder with fast carry | Philips |
| 163674 | 74HC283PW | 4-bit binary full adder with fast carry | NXP Semiconductors |
| 163675 | 74HC283PW | 74HC283; 4-bit binary full adder with fast carry | Philips |
| 163676 | 74HC283U | 4-bit binary full adder with fast carry | Philips |
| 163677 | 74HC297 | Digital phase-locked-loop filter | Philips |
| 163678 | 74HC298 | Quad. 2-input Multiplexers (with storage) | Hitachi Semiconductor |
| 163679 | 74HC299 | 3-state | Philips |
| 163680 | 74HC299D | 8-bit universal shift register; 3-state | Nexperia |
