| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | CD74HC4520E | High Speed CMOS Logic Dual Synchronous Counters | 46K |
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| 2 | CD74HC4520E | High-Speed CMOS Logic Dual Synchronous Counters | 287K |
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| 3 | CD74HC4520EE4 | High-Speed CMOS Logic Dual Synchronous Counters | 287K |
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| 4 | CD74HC4520EN | Logic IC | 583K |
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