| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74LCX257M | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs | 102K |
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| 2 | 74LCX257MTC | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs | 102K |
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| 3 | 74LCX257MTCX | 2-Input Digital Multiplexer | 102K |
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| 4 | 74LCX257MTR | LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS AND OUTPUTS (3-STATE) | 295K |
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| 5 | 74LCX257MX | 2-Input Digital Multiplexer | 102K |
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