| Fabricante Electrônico | Nome de Peças | Folha de dados | Descrição Electrónicos |
 National Semiconductor ... | DM74LS197 |  117Kb/6P | Presettable Binary Counters |
| DM74LS197M |  117Kb/6P | Presettable Binary Counters |
| DM74LS197N |  117Kb/6P | Presettable Binary Counters |
 National Semiconductor ... | DM74LS190 |  174Kb/ 8P | Synchronous 4-Bit Up/Down Counters with Mode Control |
| DM74LS190M |  174Kb/ 8P | Synchronous 4-Bit Up/Down Counters with Mode Control |
| DM74LS190N |  174Kb/ 8P | Synchronous 4-Bit Up/Down Counters with Mode Control |
 National Semiconductor ... | DM74LS191 |  174Kb/ 8P | Synchronous 4-Bit Up/Down Counters with Mode Control |
 National Semiconductor ... | DM74LS191M |  174Kb/ 8P | Synchronous 4-Bit Up/Down Counters with Mode Control |
 National Semiconductor ... | DM74LS191N |  174Kb/ 8P | Synchronous 4-Bit Up/Down Counters with Mode Control |
| DM74LS192 |  172Kb/ 8P | 54LS192/DM74LS192 Up/Down Decade Counter with Separate Up/Down Clocks |
| DM74LS192M |  172Kb/ 8P | 54LS192/DM74LS192 Up/Down Decade Counter with Separate Up/Down Clocks |
| DM74LS192N |  172Kb/ 8P | 54LS192/DM74LS192 Up/Down Decade Counter with Separate Up/Down Clocks |
 National Semiconductor ... | DM74LS194A |  166Kb/ 8P | 4-Bit Bidirectional Universal Shift Register |