Logic Diagram 3 To 8 Decoder Truth Table. The truth table of sr flip flop is highlighted. Y 0 a 0 a 1 a 2 a 3 y 1 a 0 a 1 a 2 a 3 y 2 a 0 a 1 a 2 a 3 y 3.
You can clearly see the logic diagram is developed using the and gates and the not gates. From the above boolean expressions the implementation of 3 to 8 decoder circuit can be done with the help of three not gates 8 three input and gates. A 1 to 4 demultiplexer uses 2 select lines a b to determine which one of the 4 outputs d0 d3 is routed from the input e.
D0 a b c d1 a b c.
It is convenient to use an and gate as the basic decoding element for the output because it produces a high or logic 1 output only when all of its inputs are logic 1. The truth table for 3 to 8 decoder is shown in table 1. 3 to 8 decoder truth table. Required number of 3 to 8 decoders 2.
