| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SN74LV4040ADE4 | 12-BIT ASYNCHRONOUS BIARY COUNTERS | 538K |
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| 2 | SN74LV4040ADE4 | 12-BIT ASYNCHRONOUS BINARY COUNTERS | 814K |
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| 3 | SN74LV4040ADE4 | 12-BIT ASYNCHRONOUS BINARY COUNTERS | 538K |
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