| 制造商 | 部件名 | 数据表 | 功能描述 |
 National Semiconductor ... | 74F190 |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
 National Semiconductor ... | 74F190PC |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
 National Semiconductor ... | 74F190SC |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
 National Semiconductor ... | 74F191 |  196Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
 National Semiconductor ... | 74F191 |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
 National Semiconductor ... | 74F191DCQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191DCX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191DMQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191DMX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FCQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FCX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |