| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | SN74LS33 | QUADRUPLE 2-INPUT POSITIVE-NOR BUFFERS WITH OPEN-COLLECTOR OUTPUTS | 214K |
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| 2 | SN74LS33D | QUADRUPLE 2-INPUT POSITIVE-NOR BUFFERS WITH OPEN-COLLECTOR OUTPUTS | 211K |
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| 3 | SN74LS33D | QUAD 2-INPUT NOR BUFFER | 127K |
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| 4 | SN74LS33N | QUADRUPLE 2-INPUT POSITIVE-NOR BUFFERS WITH OPEN-COLLECTOR OUTPUTS | 211K |
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| 5 | SN74LS33N | QUAD 2-INPUT NOR BUFFER | 127K |
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