M74HC166RM13TRIC REGISTER 8BIT PISO 16-SOIC|STMICROELECTRONICS|Lead free|RoHS Compliant SN74HC166DR M74HC166RM13TRIC REGISTER 8BIT PISO 16-SOIC|STMICROELECTRONICS (VA)|Lead free|RoHS Compliant SN74HC166DR