74ACT646SCIC TXRX/REGISTER 3ST 8BIT 24SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant MC74ACT646DWG MC74ACT646DWG 74ACT646SCXIC TXRX/REGISTER 3ST 8BIT 24SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant MC74ACT646DWR2G