SN74LS21N3 и другие
| Компонент | Описание | Производитель | |
| SN74LS21N | DUAL 4-INPUT AND GATE |
Motorola, Inc |
 |
| SN74LS21N | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|
| SN74LS21N3 | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|
| SN74LS21NE4 | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|
| SN74LS21NSR | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|
| SN74LS21NSRE4 | DUAL 4-INPUT POSITIVE-AND GATES |
Texas Instruments |
|