MC74ACT646DWGIC TXRX/REGISTER 3ST 8BIT 24SOIC|ON SEMICONDUCTOR|Lead free|RoHS Compliant 74ACT646SC 74ACT646SCX CD74ACT646M MC74ACT646DWGIC TXRX/REGISTER 3ST 8BIT 24SOIC|ON SEMICONDUCTOR|Lead free|RoHS Compliant 74ACT646SC 74ACT646SCX CD74ACT646M