| 648281 | HCF4517BC1 | DUAL 64-STAGE STATIC SHIFT REGISTER | ST Microelectronics |
| 648282 | HCF4517BEY | DUAL 64-STAGE STATIC SHIFT REGISTER | SGS Thomson Microelectronics |
| 648283 | HCF4517BEY | DUAL 64-STAGE STATIC SHIFT REGISTER | ST Microelectronics |
| 648284 | HCF4517BM1 | DUAL 64-STAGE STATIC SHIFT REGISTER | ST Microelectronics |
| 648285 | HCF4518 | DUAL UP-COUNTERS | ST Microelectronics |
| 648286 | HCF4518B | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648287 | HCF4518B | Dual BCD up counter | SGS-ATES |
| 648288 | HCF4518B | DUAL UP-COUNTERS | ST Microelectronics |
| 648289 | HCF4518BC1 | DUAL UP-COUNTERS | ST Microelectronics |
| 648290 | HCF4518BEY | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648291 | HCF4518BEY | DUAL UP-COUNTERS | ST Microelectronics |
| 648292 | HCF4518BF | DUAL UP-COUNTERS | ST Microelectronics |
| 648293 | HCF4518BM1 | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648294 | HCF4518BM1 | DUAL UP-COUNTERS | ST Microelectronics |
| 648295 | HCF4518M013TR | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648296 | HCF4518M013TR | DUAL UP-COUNTERS | ST Microelectronics |
| 648297 | HCF4519 | 4 - BIT AND/OR SELECTOR | ST Microelectronics |
| 648298 | HCF4519B | 4 - BIT AND/OR SELECTOR | SGS Thomson Microelectronics |
| 648299 | HCF4519B | 4 - BIT AND/OR SELECTOR | ST Microelectronics |
|
| 648300 | HCF4519BC1 | 4 - BIT AND/OR SELECTOR | ST Microelectronics |
| 648301 | HCF4519BEY | 4 BIT AND/OR SELECTOR | SGS Thomson Microelectronics |
| 648302 | HCF4519BEY | 4 - BIT AND/OR SELECTOR | ST Microelectronics |
| 648303 | HCF4519BM1 | 4 BIT AND/OR SELECTOR | SGS Thomson Microelectronics |
| 648304 | HCF4519BM1 | 4 - BIT AND/OR SELECTOR | ST Microelectronics |
| 648305 | HCF4519M013TR | 4 BIT AND/OR SELECTOR | SGS Thomson Microelectronics |
| 648306 | HCF4520 | DUAL UP-COUNTERS | ST Microelectronics |
| 648307 | HCF4520B | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648308 | HCF4520B | Dual binary up counter | SGS-ATES |
| 648309 | HCF4520B | DUAL UP-COUNTERS | ST Microelectronics |
| 648310 | HCF4520BC1 | DUAL UP-COUNTERS | ST Microelectronics |
| 648311 | HCF4520BEY | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648312 | HCF4520BEY | DUAL UP-COUNTERS | ST Microelectronics |
| 648313 | HCF4520BF | DUAL UP-COUNTERS | ST Microelectronics |
| 648314 | HCF4520BM1 | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648315 | HCF4520BM1 | DUAL UP-COUNTERS | ST Microelectronics |
| 648316 | HCF4520M013TR | DUAL UP-COUNTERS | SGS Thomson Microelectronics |
| 648317 | HCF4520M013TR | DUAL UP-COUNTERS | ST Microelectronics |
| 648318 | HCF4521 | 24 STAGE FREQUENCY DIVIDER | ST Microelectronics |
| 648319 | HCF4521B | 24 STAGE FREQUENCY DIVIDER | SGS Thomson Microelectronics |
| 648320 | HCF4521B | 24 STAGE FREQUENCY DIVIDER | ST Microelectronics |
