Encoders, Decoders, Multiplexers & Demultiplexers Encoders, Decoders, Multiplexers & Demultiplexers Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CDIP -55 to 125 JM38510/30702BEA - Texas Instrument - Military High-Reliability Integrated Circuit, Commercial Number 54LS139 MFG. Texas Instrument