DM74ALS645AWMIC TRANSCEIVER 3-ST 8BIT 20SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74ALS645ADW SN74ALS645ADWG4 DM74ALS645AWMXIC TRANSCEIVER 3-ST 8BIT 20SOIC|FAIRCHILD SEMICONDUCTOR|Lead free|RoHS Compliant SN74ALS645ADWR