The XD74LS139 is a high-speed, low-power integrated circuit with signal switches, multiplexers, and decoders, all in one package. It is a Dual 2-to-4 Line Decoder/Demultiplexer with two address inputs, four active LOW outputs, and a common active LOW enable input. It is a 16-pin DIP RoHS compliant package, manufactured by XINLUDA. It has a wide operating range of 2V to 6V and features a wide temperature range (-40C to +85C) for use in a variety of industrial, automotive, and military design applications. This device is ideal for decoding digital combinations and bus address selection. It is a great choice for implementing address decoding, data gating, and memory decoding. Its logic inputs and outputs are CMOS and TTL compatible.