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