| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | TC74HC257AF | QUAD 2-CHANEL MULTIPLEXER (3-STATE) | 256K |
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| 2 | TC74HC257AF | Quad 2-Channel Multiplexer (3-state) | 270K |
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| 3 | TC74HC257AFN | QUAD 2-CHANEL MULTIPLEXER (3-STATE) | 256K |
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| 4 | TC74HC257AFN | Quad 2-Channel Multiplexer (3-state) | 270K |
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