M54HC4520 и другие
| Компонент | Описание | Производитель | |
| CD54HC4520 | High-Speed CMOS Logic Dual Synchronous Counters |
Texas Instruments |
 |
| CD54HC4520F | High-Speed CMOS Logic Dual Synchronous Counters |
Texas Instruments |
|
| CD54HC4520F3A | High-Speed CMOS Logic Dual Synchronous Counters |
Texas Instruments |
|
| M54HC4520 | HC4518 DUAL DECADE COUNTER HC4520 DUAL 4 BIT BINARY COUNTER |
STMicroelectronics |
|