| Компонент | Описание | Производитель | |
| SL74HC257 | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs |
System Logic Semiconductor |
|
| SL74HC257D | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs |
System Logic Semiconductor |
|
| SL74HC257N | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs |
System Logic Semiconductor |