| Компонент | Описание | Производитель | |
| HD74LS257 | Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs) |
Hitachi Semiconductor |
|
| HD74LS257 | Ouadruple 2-input Positive NAND Gates |
Hitachi Semiconductor |
|
| HD74LS257 | Quadruple 2-line-to-1-line Data Selectors / Multiplexers (with not inverted 3-state outputs) |
Renesas Technology Corp |
|
| HD74LS257FPEL | Quadruple 2-line-to-1-line Data Selectors / Multiplexers (with not inverted 3-state outputs) |
Renesas Technology Corp |
|
| HD74LS257P | Quadruple 2-line-to-1-line Data Selectors / Multiplexers (with not inverted 3-state outputs) |
Renesas Technology Corp |