| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | HD74BC540A | Octal Buffers/Line Drivers With 3 State Outputs | 39K |
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| 2 | HD74BC540A | Octal Buffers/Line Drivers With 3 State Outputs | 206K |
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| 3 | HD74BC540AFP | BUFFER/DRIVER|SINGLE|8-BIT|BICMOS-TTL|SOP|20PIN|PLASTIC | 38K |
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| 4 | HD74BC540AFPEL | Octal Buffers/Line Drivers With 3 State Outputs | 206K |
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| 5 | HD74BC540AP | BUFFER/DRIVER|SINGLE|8-BIT|BICMOS-TTL|DIP|20PIN|PLASTIC | 38K |
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| 6 | HD74BC540ARP | BUFFER/DRIVER|SINGLE|8-BIT|BICMOS-TTL|SOP|20PIN|PLASTIC | 38K |
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| 7 | HD74BC540AT | BUFFER/DRIVER|SINGLE|8-BIT|BICMOS-TTL|TSSOP|20PIN|PLASTIC | 38K |
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