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贴片直插MC74VHC00MEL，MC74LVX8051D，MC74LVX86DTG，4
丝印MC74VHC02DR2-MC74VHC00MEL-MC74VHC00DTG-mc74vhc00dtg
贴片直插MC74VHC02MEL，MC74VHC00ML2，MC74VHC02DTG，4
