IC 74138 (3-to-8 line decoder/demultiplexer),74LS138 Datasheet and Pinout | ElectroSchematics.com,IC 74138 (3-to-8 line decoder/demultiplexer) – IGelectronics-GCC,74LS138 Decoder Pinout, Features, Circuit & Datasheet,Solved Refer to the 74138 chip's function table and | Chegg.com