74ACT257PC и другие
| Компонент | Описание | Производитель | |
| 74ACT257PC | Quad 2-Input Multiplexer with 3-STATE Outputs |
Fairchild Semiconductor |
 |
| TC74ACT257P | CMOS Digital Integrated Circuit Silicon Monolithic 2-Channel Multiplexer (3-state) |
Toshiba Semiconductor |
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