FST3257QSCXMUX/DEMUX QUAD 2:1 TTL 16QSOP|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74CBT3257CDBQR FST3257QSCMUX/DEMUX QUAD 2:1 TTL 16QSOP|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74CBT3257DBQR CBT3257ADS,112