| Компонент | Описание | Производитель | |
| 54F191DCQB | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |
|
| 54F191DCX | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |
|
| 74F191DCQB | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |
|
| 74F191DCX | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |