| 1238521 | N74F541D | Octal inverter buffer (3- State); Octal buffer (3- State) | NXP Semiconductors |
| 1238522 | N74F541D | Octal inverter buffer 3- State | Philips |
| 1238523 | N74F541N | Octal inverter buffer (3- State); Octal buffer (3- State) | NXP Semiconductors |
| 1238524 | N74F541N | Octal inverter buffer 3- State | Philips |
| 1238525 | N74F543D | Octal latched transceiver with dual enable; 3-state | NXP Semiconductors |
| 1238526 | N74F543D | Octal registered transceiver, non-inverting 3-State | Philips |
| 1238527 | N74F543DB | Octal latched transceiver with dual enable; 3-state | NXP Semiconductors |
| 1238528 | N74F543DB | 74F543; Octal registered transceiver, non-inverting (3-state) | Philips |
| 1238529 | N74F543N | Octal registered transceiver, non-inverting 3-State | Philips |
| 1238530 | N74F544D | Octal registered transceiver, non-inverting 3-State | Philips |
| 1238531 | N74F544N | Octal registered transceiver, non-inverting 3-State | Philips |
| 1238532 | N74F545D | Octal bidirectional transceiver with 3-State inputs/outputs | Philips |
| 1238533 | N74F545N | Octal bidirectional transceiver with 3-State inputs/outputs | Philips |
| 1238534 | N74F552D | Octal registered transceiver with parity and flags 3-State | Philips |
| 1238535 | N74F552N | Octal registered transceiver with parity and flags 3-State | Philips |
| 1238536 | N74F564D | Octal D flip-flop 3-State | Philips |
| 1238537 | N74F564N | Octal D flip-flop 3-State | Philips |
| 1238538 | N74F569D | 4-bit bidirectional binary synchronous counter 3-State | Philips |
| 1238539 | N74F569N | 4-bit bidirectional binary synchronous counter 3-State | Philips |
|
| 1238540 | N74F573D | Octal transparent latch (3-State) | NXP Semiconductors |
| 1238541 | N74F573D | Octal transparent latch 3-State | Philips |
| 1238542 | N74F573DB | Octal transparent latch (3-State) | NXP Semiconductors |
| 1238543 | N74F573DB | Octal transparent latch 3-State | Philips |
| 1238544 | N74F573N | Octal transparent latch (3-State) | NXP Semiconductors |
| 1238545 | N74F573N | Octal transparent latch 3-State | Philips |
| 1238546 | N74F574D | Octal D Flip-Flop (3-State) | NXP Semiconductors |
| 1238547 | N74F574D | Octal transparent latch 3-State | Philips |
| 1238548 | N74F574N | Octal D Flip-Flop (3-State) | NXP Semiconductors |
| 1238549 | N74F574N | Octal transparent latch 3-State | Philips |
| 1238550 | N74F579D | 8-bit bidirectional binary counter 3-State | Philips |
| 1238551 | N74F579N | 8-bit bidirectional binary counter 3-State | Philips |
| 1238552 | N74F583D | 4-bit BCD adder | Philips |
| 1238553 | N74F583N | 4-bit BCD adder | Philips |
| 1238554 | N74F595D | 8-bit shift register with output laches 3-State | Philips |
| 1238555 | N74F595N | 8-bit shift register with output laches 3-State | Philips |
| 1238556 | N74F597D | 8-bit shift register with input storage registers | Philips |
| 1238557 | N74F597N | 8-bit shift register with input storage registers | Philips |
| 1238558 | N74F598D | 8-bit shift register with input storage registers 3-State | Philips |
| 1238559 | N74F598N | 8-bit shift register with input storage registers 3-State | Philips |
| 1238560 | N74F604D | Dual octal latch 3-State | Philips |
