74F244SJIC BUFF/DVR TRI-ST DUAL 20SOP|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74F244NSRE4 SN74F244NSR 74F244SJXIC BUFF/DVR TRI-ST DUAL 20SOP|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74F244NSRG4 SN74F244NSR