| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | TC74VHC257FT | QUAD 2-CHANNEL MULTIPLEXER (3-STATE) | 241K |
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| 2 | TC74VHC257FT | OCTAL D-TUPE FLIP-FLOP WITH CLEAR | 265K |
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| 3 | TC74VHC257FT | TRIPLE 3-INPUT NOR GATE | 194K |
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| 4 | TC74VHC257FT | Quad 2-Channel Multiplexer (3-state) | 271K |
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