SN74ALS21AD и другие
| Компонент | Описание | Производитель | |
| SN74ALS21A | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
 |
| SN74ALS21AD | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|
| SN74ALS21ADR | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|
| SN74ALS21AN | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|