LOGIC, BUS TRANSCVR OCTAL, 20SOIC; Logic Device Type:Transceiver, Non Inverting; Supply Voltage Range:4.5V to 5.5V; Logic Case Style:SOIC; No. of Pins:20; Operating Temperature Range:0°C to +70°C; SVHC:No SVHC (20-Jun-2011); Logic Function Number:74639; Logic IC Base Number:74639; Logic IC Family:ALS; Logic IC Function:Octal Bus Transceiver; Package / Case:SOIC; Supply Voltage Max:5.5V; Supply Voltage Min:4.5V; Termination Type:SMD