| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SL74HC240 | Octal 3-State Inverting Buffer/Line Driver/Line Receiver | 49K |
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| 2 | SL74HC240D | Octal 3-State Inverting Buffer/Line Driver/Line Receiver | 49K |
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| 3 | SL74HC240N | Octal 3-State Inverting Buffer/Line Driver/Line Receiver | 49K |
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