| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MC74LCX257DT | Low-Voltage CMOS Quad 2-Input Multiplexer | 159K |
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| 2 | MC74LCX257DT | LOW-VOLTAGE CMOS QUAD 2-INPUT MULTIPLEXER | 159K |
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| 3 | MC74LCX257DT | Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting) | 89K |
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| 4 | MC74LCX257DTR2 | Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting) | 89K |
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