| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 54LS193 | PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER | 282K |
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| 2 | 54LS193 | PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER | 113K |
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| 3 | 54LS193/B2C | Synchronous Up/Down Counter | 239K |
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| 4 | 54LS193DMQB | Synchronous Up/Down Counter | 142K |
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| 5 | 54LS193FMQB | Synchronous Up/Down Counter | 142K |
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| 6 | 54LS193LMQB | Synchronous Up/Down Counter | 142K |
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