| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | PI74FCT2157AT | Fast CMOS Quad 2-Input Multiplexer | 51K |
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| 2 | PI74FCT2157ATQ | 2-Input Digital Multiplexer | 187K |
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| 3 | PI74FCT2157ATS | 2-Input Digital Multiplexer | 187K |
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| 4 | PI74FCT2157ATW | 2-Input Digital Multiplexer | 187K |
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