DM74LS244NIC BUFF/DVR/RCVR 3ST DUAL 20DIP|FAIRCHILD SEMICONDUCTOR|Lead All|RoHS Mixed SN74LS244N DM74LS244WMIC BUFF/DVR/RCVR 3ST DUAL 20SOIC|FAIRCHILD SEMICONDUCTOR|Lead All|RoHS Mixed SN74LS244DW