| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SN74HC4020DB | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 553K |
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| 2 | SN74HC4020DB | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 550K |
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| 3 | SN74HC4020DBR | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 550K |
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| 4 | SN74HC4020DBR | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 699K |
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| 5 | SN74HC4020DBR | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 842K |
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| 6 | SN74HC4020DBR | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 550K |
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| 7 | SN74HC4020DBRE4 | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 550K |
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| 8 | SN74HC4020DBRE4 | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 699K |
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| 9 | SN74HC4020DBRE4 | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 550K |
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| 10 | SN74HC4020DBRG4 | 14-BIT ASYNCHRONOUS BINARY COUNTERS | 699K |
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