74AC257SCIC MULTIPLEXER QUAD 2-IN 16-SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant CD74AC257M 74AHC257D,112 74AC257SCXMULTIPLEXER QUAD 2IN 3ST 16SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant 74AHC257D,118