| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74HCT7403 | 4-Bit x 64-word FIFO register; 3-state | 167K |
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| 2 | 74HCT7403D | 4-Bit x 64-word FIFO register; 3-state | 167K |
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| 3 | 74HCT7403D-T | x4 Asynchronous FIFO | 564K |
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| 4 | 74HCT7403N | 4-Bit x 64-word FIFO register; 3-state | 167K |
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