74AC16244TTRIC BUS BUFF TRI-ST 16BIT 48TSSOP|STMICROELECTRONICS|Lead free|RoHS Compliant 74AC16244DGGR 74AC16244TTRIC BUS BUFF TRI-ST 16BIT 48TSSOP|STMICROELECTRONICS (VA)|Lead free|RoHS Compliant 74AC16244DGGR