| Компонент | Описание | Производитель | |
| CD74ACT191 | Presettable Synchronous 4-Bit Binary Up/Down Counter |
Texas Instruments |
|
| CD74ACT191E | Presettable Synchronous 4-Bit Binary Up/Down Counter |
Texas Instruments |
|
| CD74ACT191M | Presettable Synchronous 4-Bit Binary Up/Down Counter |
Texas Instruments |