SN74LS90DR2 и другие
| Компонент | Описание | Производитель | |
| SN74LS90DR | DECADE, DIVIDE-BY-TWELVE AND BINARY COUNTERS |
Texas Instruments |
 |
| SN74LS90DR | DECADE, DIVIDE-BY-TWELVE AND BINARY COUNTERS |
Texas Instruments |
|
| SN74LS90DR2 | DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER |
ON Semiconductor |
|
| SN74LS90DRE4 | DECADE, DIVIDE-BY-TWELVE AND BINARY COUNTERS |
Texas Instruments |
|
| SN74LS90DRG4 | DECADE, DIVIDE-BY-TWELVE AND BINARY COUNTERS |
Texas Instruments |
|