| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | DM74LS390 | Dual 4-Bit Decade Counter | 59K |
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| 2 | DM74LS390M | Dual 4-Bit Decade Counter | 59K |
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| 3 | DM74LS390MX | Asynchronous Up Counter | 59K |
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| 4 | DM74LS390N | Dual 4-Bit Decade Counter | 59K |
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| 5 | DM74LS390N/A+ | Asynchronous Up Counter | 108K |
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| 6 | DM74LS390N/B+ | Asynchronous Up Counter | 108K |
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