Encoders, Decoders, Multiplexers & Demultiplexers Encoders, Decoders, Multiplexers & Demultiplexers Dual 4-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs 16-CDIP -55 to 125 JM38510/30908BEA - Texas Instrument - Military High-Reliability Integrated Circuit, Commercial Number 54LS253 MFG. Texas Instrument Date Code 1989