CD4021BCMXIC SHIFT REGISTER 8STAGE 16SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant HEF4021BT,653 HCF4021M013TR CD4021BCMXIC SHIFT REGISTER 8STAGE 16SOIC|FAIRCHILD SEMICONDUCTOR (VA)|Lead free|RoHS Compliant HCF4021M013TR