SN54LS348 PDF File ( Datasheet )

8-INPUT PRIORITY ENCODERS WITH 3-STATE OUTPUTS The SN54 , 74LS348 and the SN54 , 74LS848 are eight input priority encoders which provide the 8-line to 3-line function. The outputs (A0 A2) and inputs (0 7) are active low. The active low input which has the highest priority (input 7 has the highest) is represented on the outputs (output A0 is the lowest bit). An example would be if inputs 1, 2 and 4 were low, then a binary 4 would be represented on the outputs. The GS (Group Signal) output is