| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MM74HCT193 | Synchronous Binary Up/Down Counters | 150K |
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| 2 | MM74HCT193 | Synchronous Binary Up/Down Counters | 150K |
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| 3 | MM74HCT193J | Synchronous Binary Up/Down Counters | 150K |
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| 4 | MM74HCT193J | Synchronous Binary Up/Down Counters | 150K |
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| 5 | MM74HCT193N | Synchronous Binary Up/Down Counters | 150K |
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| 6 | MM74HCT193N | Synchronous Binary Up/Down Counters | 150K |
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