LOGIC DIAGRAM 2X4 DECODER

Decoder | Combinational Logic Functions | Electronics Textbook
A decoder is a circuit that changes a code into a set of signals. It is called a decoder because it does the reverse of encoding, but we will begin our study of encoders and decoders with decoders because they are simpler to design.[PDF]
74HC139; 74HCT139 Dual 2-to-4 line decoder/demultiplexer
74HC139; 74HCT139 Dual 2-to-4 line decoder/demultiplexer Rev. 4 — 11 December 2015 Product data sheet Type number Package Functional diagram Fig 1. Logic symbol Fig 2. Functional diagram $ $ $ $ ( < < < < < < < < DDD (DDD