| Компонент | Описание | Производитель | |
| 74LCX257MTC | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs |
Fairchild Semiconductor |
|
| 74LCX257MTCX | Low-Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs |
Fairchild Semiconductor |
|
| 74LCX257MTR | LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS AND OUTPUTS (3-STATE) |
STMicroelectronics |