FST3253MXMUX/DEMUX DUAL 4:1 TTL 16SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74CBT3253DRG4 FST3253MXMUX/DEMUX DUAL 4:1 TTL 16SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74CBT3253DRG4