| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | 54F190DM |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
 National Semiconductor ... | 54F190FM |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
| 54F190LM |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
| 54F190 |  178Kb/10P | Up/Down Decade Counter with Preset and Ripple Clock |
| 54F191 |  196Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191 |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191DCQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191DCX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191DM |  196Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191DMQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191DMX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191FCQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191FCX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191FM |  196Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191FMQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191FMX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191LCQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191LCX |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191LM |  196Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |
| 54F191LMQB |  175Kb/10P | Up/Down Binary Counter with Preset and Ripple Clock |