1.65V–3.6V 3:8 decoder/demux in 16-TSSOP
The 74LCX138FT is a single 3:8 line decoder/demultiplexer from Toshiba's 74LCX family, operating from 1.65 V to 3.6 V. It translates three binary address inputs into one of eight active-low outputs — a standard address decode function for memory-mapped or peripheral-select logic in low-voltage digital systems.
Output drive and package
Each output sources or sinks 24 mA, enough to drive LED indicators, small relays through a buffer, or the clock-enable pin of a downstream register without an external line driver.