| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | RD74LVC540B | Octal Buffers / Line Drivers with 3-state Outputs | 85K |
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| 2 | RD74LVC540BFPEL | Octal Buffers / Line Drivers with 3-state Outputs | 85K |
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| 3 | RD74LVC540BTELL | Octal Buffers / Line Drivers with 3-state Outputs | 85K |
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