CD4538BCMXMULTIVIBRATOR DUAL PREC 16SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant HEF4538BT,653 CD4538BCMXMULTIVIBRATOR DUAL PREC 16SOIC|FAIRCHILD SEMICONDUCTOR (VA)|Lead free|RoHS Compliant HEF4538BT,653