Encoders, Decoders, Multiplexers & Demultiplexers Encoders, Decoders, Multiplexers & Demultiplexers Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125 JM38510/30906BEA - Motorola - Military High-Reliability Integrated Circuit, Commercial Number 54LS257 MFG. Motorola Date Code 1987