| 646401 | HCC40257B | QUAD 2-LINE-TO-1-LINE DATA SELECTOR/MULTIPLEXER | SGS Thomson Microelectronics |
| 646402 | HCC40257B | QUAD 2-LINE-TO-1-LINE DATA SELECTOR/MULTIPLEXER | ST Microelectronics |
| 646403 | HCC40257BF | QUAD 2-LINE-TO-1-LINE DATA SELECTOR/MULTIPLEXER | SGS Thomson Microelectronics |
| 646404 | HCC40257BF | QUAD 2-LINE-TO-1-LINE DATA SELECTOR/MULTIPLEXER | ST Microelectronics |
| 646405 | HCC4025B | NOR GATE | SGS Thomson Microelectronics |
| 646406 | HCC4025B | NOR GATE | ST Microelectronics |
| 646407 | HCC4025BDG | Rad-Hard Triple 3-Input NOR Gate | ST Microelectronics |
| 646408 | HCC4025BDT | Rad-Hard Triple 3-Input NOR Gate | ST Microelectronics |
| 646409 | HCC4025BF | NOR GATE | ST Microelectronics |
| 646410 | HCC4026B | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | SGS Thomson Microelectronics |
| 646411 | HCC4026B | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | ST Microelectronics |
| 646412 | HCC4026BC1 | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | SGS Thomson Microelectronics |
| 646413 | HCC4026BC1 | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | ST Microelectronics |
| 646414 | HCC4026BEY | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | SGS Thomson Microelectronics |
| 646415 | HCC4026BEY | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | ST Microelectronics |
| 646416 | HCC4026BF | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | SGS Thomson Microelectronics |
| 646417 | HCC4026BF | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | ST Microelectronics |
| 646418 | HCC4026BM1 | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | SGS Thomson Microelectronics |
| 646419 | HCC4026BM1 | 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED | ST Microelectronics |
|
| 646420 | HCC4027B | DUAL-J-K MASTER-SLAVE FLIP-FLOP | SGS Thomson Microelectronics |
| 646421 | HCC4027B | DUAL-J-K MASTER-SLAVE FLIP-FLOP | ST Microelectronics |
| 646422 | HCC4027BDG | Rad-hard dual J-K master-slave Flip-Flop | ST Microelectronics |
| 646423 | HCC4027BDT | Rad-hard dual J-K master-slave Flip-Flop | ST Microelectronics |
| 646424 | HCC4027BF | DUAL-J-K MASTER-SLAVE FLIP-FLOP | SGS Thomson Microelectronics |
| 646425 | HCC4027BF | DUAL-J-K MASTER-SLAVE FLIP-FLOP | ST Microelectronics |
| 646426 | HCC4027BKG | Rad-hard dual J-K master-slave Flip-Flop | ST Microelectronics |
| 646427 | HCC4027BKT | Rad-hard dual J-K master-slave Flip-Flop | ST Microelectronics |
| 646428 | HCC4028B | BCD-TO-DECIMAL DECODER | SGS Thomson Microelectronics |
| 646429 | HCC4028B | BCD-TO-DECIMAL DECODER | ST Microelectronics |
| 646430 | HCC4028BDG | Rad-hard BCD-to-decimal decoder | ST Microelectronics |
| 646431 | HCC4028BDT | Rad-hard BCD-to-decimal decoder | ST Microelectronics |
| 646432 | HCC4028BF | BCD-TO-DECIMAL DECODER | SGS Thomson Microelectronics |
| 646433 | HCC4028BF | BCD-TO-DECIMAL DECODER | ST Microelectronics |
| 646434 | HCC4028BKG | Rad-hard BCD-to-decimal decoder | ST Microelectronics |
| 646435 | HCC4028BKT | Rad-hard BCD-to-decimal decoder | ST Microelectronics |
| 646436 | HCC4029B | BINARY OR BCD DECADE PRESETTABLE UP/DOWN COUNTER | SGS Thomson Microelectronics |
| 646437 | HCC4029B | BINARY OR BCD DECADE PRESETTABLE UP/DOWN COUNTER | ST Microelectronics |
| 646438 | HCC4029BDG | Rad-hard presettable up/down counter | ST Microelectronics |
| 646439 | HCC4029BDT | Rad-hard presettable up/down counter | ST Microelectronics |
| 646440 | HCC4029BF | BINARY OR BCD DECADE PRESETTABLE UP/DOWN COUNTER | SGS Thomson Microelectronics |
