MM54HCT193 и другие
| Компонент | Описание | Производитель | |
| MM54HCT190 | Level changes on Enable or Down/Up can be made regardless of the level of the clock |
National Semiconductor |
 |
| MM54HCT191 | Level changes on Enable or Down/Up can be made regardless of the level of the clock |
National Semiconductor |
|
| MM54HCT193 | Synchronous Binary Up/Down Counters |
National Semiconductor |
|
| MM54HCT193J | Synchronous Binary Up/Down Counters |
National Semiconductor |
|