| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | CD74HCT540MG4 | High-Speed CMOS Logic Octal Buffer and Line Drivers, Three-State | 478K |
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| 2 | CD74HCT540MG4 | High-Speed CMOS Logic Octal Buffer and Line Drivers, Three-State | 509K |
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