DM74S257N и другие
| Компонент | Описание | Производитель | |
| DM74S257 | TRI-STATE QUAD 1 OF 2 DATA SELECTORS / MULTIPLEXERS |
National Semiconductor |
 |
| DM74S257 | 3-STATE Quad 1-of-2 Data Selector/Multiplexer |
Fairchild Semiconductor |
|
| DM74S257CW | Quad 3-STATE 2-to-1 Line Data Selector/Multiplexer |
Fairchild Semiconductor |
|
| DM74S257N | TRI-STATE QUAD 1 OF 2 DATA SELECTORS / MULTIPLEXERS |
National Semiconductor |
|
| DM74S257N | 3-STATE Quad 1-of-2 Data Selector/Multiplexer |
Fairchild Semiconductor |
|