| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | IN74HC193A | Presettable 4-Bit Binary UP/DOWN Counter High-Performance Silicon-Gate CMOS | 505K |
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| 2 | IN74HC193AD | Presettable 4-Bit Binary UP/DOWN Counter High-Performance Silicon-Gate CMOS | 505K |
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| 3 | IN74HC193AN | Presettable 4-Bit Binary UP/DOWN Counter High-Performance Silicon-Gate CMOS | 505K |
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