| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | HD74HC157 | These devices each consist of four 2-input digital multiplexers with common select and strobe inputs | 58K |
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| 2 | HD74HC157 | Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted outputs) | 75K |
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| 3 | HD74HC157/HD74HC158 | 54K |
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