DM54LS251W и другие
| Компонент | Описание | Производитель | |
| DM54LS251 | TRI-STATE Data Selectors/Multiplexers |
National Semiconductor |
 |
| DM54LS251J | TRI-STATE Data Selectors/Multiplexers |
National Semiconductor |
|
| DM54LS251W | TRI-STATE Data Selectors/Multiplexers |
National Semiconductor |
|