SL4020BD и другие
| Компонент | Описание | Производитель | |
| SCL4020B | fourteen stage binary counter |
R & E International, Inc. |
 |
| SL4020B | 14 Stage Ripple-Carry Binary Counter/Divider |
System Logic Semiconductor |
|
| SL4020BD | 14 Stage Ripple-Carry Binary Counter/Divider |
System Logic Semiconductor |
|
| SL4020BN | 14 Stage Ripple-Carry Binary Counter/Divider |
System Logic Semiconductor |
|