| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | HD74BC640A | Octal Bus Transceivers With 3 State Outputs | 45K |
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| 2 | HD74BC640A | Octal Bus Transceivers With 3 State Outputs | 210K |
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| 3 | HD74BC640AFP | BUS TRANSCEIVER|SINGLE|8-BIT|BICMOS-TTL|SOP|20PIN|PLASTIC | 43K |
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| 4 | HD74BC640AFPEL | Octal Bus Transceivers With 3 State Outputs | 210K |
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| 5 | HD74BC640AP | BUS TRANSCEIVER|SINGLE|8-BIT|BICMOS-TTL|DIP|20PIN|PLASTIC | 43K |
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| 6 | HD74BC640ARP | Bus Transceiver | 67K |
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| 7 | HD74BC640AT | BUS TRANSCEIVER|SINGLE|8-BIT|BICMOS-TTL|TSSOP|20PIN|PLASTIC | 43K |
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