I74F257AD и другие
| Компонент | Описание | Производитель | |
| 74F257A | Quad 2-Input Multiplexer with 3-STATE Outputs |
Fairchild Semiconductor |
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| 74F257A | Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State |
NXP Semiconductors |
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| 74F257APC | Quad 2-Input Multiplexer with 3-STATE Outputs |
Fairchild Semiconductor |
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| 74F257APC | Quad 2-Input Multiplexer with TRI-STATE Outputs |
National Semiconductor |
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| 74F257ASC | Quad 2-Input Multiplexer with TRI-STATE Outputs |
National Semiconductor |
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| 74F257ASC | Quad 2-Input Multiplexer with 3-STATE Outputs |
Fairchild Semiconductor |
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| 74F257ASCSCX | Quad 2-Input Multiplexer with TRI-STATE Outputs |
National Semiconductor |
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| 74F257ASCSJX | Quad 2-Input Multiplexer with TRI-STATE Outputs |
National Semiconductor |
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| 74F257ASCX | Quad 2-Input Multiplexer with 3-STATE Outputs |
Fairchild Semiconductor |
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| 74F257ASJ | Quad 2-Input Multiplexer with 3-STATE Outputs |
Fairchild Semiconductor |
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