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贴片直插MC74VHC240DT,MC74VHC14ML1,MC74VHC157DG,4
贴片直插MC74VHC244ML1G,MC74VHC240ML1G,MC74VHC244DTEL,4
贴片直插MC74VHC244DWG,MC74VHC1G14DF,MC74VHC240ML1,4