| 155481 | 74ACT2708 | 64 x 9 First-In, First-Out Memory | Fairchild Semiconductor |
| 155482 | 74ACT2708CW | 64 x 9 First-In First-Out Memory | Fairchild Semiconductor |
| 155483 | 74ACT2708PC | 64 x 9 First-In/ First-Out Memory | Fairchild Semiconductor |
| 155484 | 74ACT273 | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155485 | 74ACT273 | OCTAL D-TYPE FLIP FLOP WITH CLEAR | SGS Thomson Microelectronics |
| 155486 | 74ACT273 | OCTAL D-TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 155487 | 74ACT273B | OCTAL D-TYPE FLIP FLOP WITH CLEAR | SGS Thomson Microelectronics |
| 155488 | 74ACT273B | OCTAL D-TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 155489 | 74ACT273M | OCTAL D-TYPE FLIP FLOP WITH CLEAR | SGS Thomson Microelectronics |
| 155490 | 74ACT273M | OCTAL D-TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 155491 | 74ACT273MTC | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155492 | 74ACT273MTCX | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155493 | 74ACT273MTR | OCTAL D-TYPE FLIP FLOP WITH CLEAR | SGS Thomson Microelectronics |
| 155494 | 74ACT273MTR | OCTAL D-TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 155495 | 74ACT273PC | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155496 | 74ACT273SC | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155497 | 74ACT273SCX | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155498 | 74ACT273SJ | Octal D-Type Flip-Flop | Fairchild Semiconductor |
| 155499 | 74ACT273SJX | Octal D-Type Flip-Flop | Fairchild Semiconductor |
|
| 155500 | 74ACT273T | OCTAL D-TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 155501 | 74ACT273TTR | OCTAL D-TYPE FLIP FLOP WITH CLEAR | SGS Thomson Microelectronics |
| 155502 | 74ACT273TTR | OCTAL D-TYPE FLIP FLOP WITH CLEAR | ST Microelectronics |
| 155503 | 74ACT280 | 9 BIT PARITY GENERATOR/CHECKER | SGS Thomson Microelectronics |
| 155504 | 74ACT280 | 9 BIT PARITY GENERATOR/CHECKER | ST Microelectronics |
| 155505 | 74ACT280B | 9 BIT PARITY GENERATOR/CHECKER | SGS Thomson Microelectronics |
| 155506 | 74ACT280B | 9 BIT PARITY GENERATOR/CHECKER | ST Microelectronics |
| 155507 | 74ACT280M | 9 BIT PARITY GENERATOR/CHECKER | SGS Thomson Microelectronics |
| 155508 | 74ACT280M | 9 BIT PARITY GENERATOR/CHECKER | ST Microelectronics |
| 155509 | 74ACT280MTR | 9 BIT PARITY GENERATOR/CHECKER | SGS Thomson Microelectronics |
| 155510 | 74ACT280MTR | 9 BIT PARITY GENERATOR/CHECKER | ST Microelectronics |
| 155511 | 74ACT280TTR | 9 BIT PARITY GENERATOR/CHECKER | SGS Thomson Microelectronics |
| 155512 | 74ACT280TTR | 9 BIT PARITY GENERATOR/CHECKER | ST Microelectronics |
| 155513 | 74ACT299 | 8-Input Universal Shift/Storage Register with Common Parallel I/O Pins | Fairchild Semiconductor |
| 155514 | 74ACT299 | 8-Input Universal Shift/Storage Register with Common I/O Pins | National Semiconductor |
| 155515 | 74ACT299 | 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR | SGS Thomson Microelectronics |
| 155516 | 74ACT299 | 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR | ST Microelectronics |
| 155517 | 74ACT299B | 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR | SGS Thomson Microelectronics |
| 155518 | 74ACT299B | 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR | ST Microelectronics |
| 155519 | 74ACT299CW | 8-Input Universal Shift/Storage Register with Common I/O Pins | Fairchild Semiconductor |
| 155520 | 74ACT299M | 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR | SGS Thomson Microelectronics |
