| Компонент | Описание | Производитель | |
| 74F27SC | Triple 3-Input NOR Gate |
Fairchild Semiconductor |
|
| 74F27SCX | Triple 3-Input NOR Gate |
Fairchild Semiconductor |
|
| 74F27SJ | Triple 3-Input NOR Gate |
Fairchild Semiconductor |
|
| 74F27SJX | Triple 3-Input NOR Gate |
Fairchild Semiconductor |