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MC74VHCT244AM MC74VHCT245ADTR MC74VHCT245ADTR2 MC74VHCT24A原
丝印MC74VHCT244AM-MC74VHCT244AD-MC74VHCT240AM-MC74VHCT14AMG
贴片直插MC74VHCT244AN，MC74VHCT14ADT，MC74VHCT244AM，4
