| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SN54HC4040J | 12-BIT ASYNCHRONOUS BINARY COUNTERS | 623K |
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| 2 | SN54HC4040J | 12-BIT ASYNCHRONOUS BINARY COUNTERS | 623K |
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| 3 | SN54HC4040J | 12 BIT ASYNCHRONOUS BINARY COUNTERS | 623K |
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| 4 | SN54HC4040J | 12-BIT ASYNCHRONOUS BINARY COUNTERS | 616K |
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| 5 | SN54HC4040J | 12-BIT ASYNCHRONOUS BINARY COUNTERS | 770K |
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