The MC74LVX139 is an advanced high speed CMOS 2to4 decoder/ demultiplexer fabricated with silicon gate CMOS technology. When the device is enabled (E = low), it can be used for gating or as a data input for demultiplexing operations. When the enable input is held high, all four outputs are fixed high, independent of other inputs. The inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems to 3 V systems.