| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74HC181 | 4-bit arithmetic logic unit | 169K |
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| 2 | 74HC181D | 4-bit arithmetic logic unit | 169K |
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| 3 | 74HC181D-T | Fixed Point ALU | 347K |
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| 4 | 74HC181N | 4-bit arithmetic logic unit | 169K |
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| 5 | 74HC181N3 | 4-bit arithmetic logic unit | 169K |
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