L4990AD и другие
| Компонент | Описание | Производитель | |
| L4990A | PRIMARY CONTROLLER |
STMicroelectronics |
 |
| L4990AD | PRIMARY CONTROLLER |
STMicroelectronics |
|
| RN4990AFS | Switching, Inverter Circuit, Interface Circuit and Driver Circuit Applications |
Toshiba Semiconductor |
|
| UPD4990A | SERIAL I/O CALENDAR & CLOCK CMOS LSI |
NEC |
|
| UPD4990AC | SERIAL I/O CALENDAR & CLOCK CMOS LSI |
NEC |
|