The 74F138D is a 3-to-8 line decoder designed to minimize propagation delay and power consumption. It is a 16-pin SOIC-16 RoHS device manufactured by Texas Instruments. This device has three active-low output enables and three active-high output enables. It is used to drive, decode, store, and switch signals from multiplexers, signal switches, transceivers, and port expanders. It can be used in applications such as digital logic, control systems, and low-power data acquisition systems. The 74F138D is a low-power, low-cost solution that is protected against static electricity.