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贴片直插MC74VHC393MEL，MC74VHC374ML2，MC74VHC393DTG，4
贴片直插MC74VHC4052DTG，MC74VHC393DTR2，MC74VHC393ML2G，4
贴片直插MC74VHC4051DTG，MC74VHC393ML1G，MC74VHC4051DR2，4
