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贴片直插MC74VHC4052D，MC74VHC374DT，MC74VHC393DG，4
贴片直插MC74VHC4052DG，MC74VHC393ML1，MC74VHC4051DT，4
贴片直插MC74VHC393MG，MC74VHC374DW，MC74VHC393DT，4
