Question

Explain the functioning of a 38decoder. You should draw its truth table and explain its logic diagram with the help of example input.

30 Nov 2023
Answer :
Word Count : 658

A 3×8 decoder is a digital circuit that decodes a 3-bit input into one of eight output lines. It is a combinational logic circuit that takes a 3-bit binary number as input and activates one of its 8 output lines, setting the corresponding output to high (1), while the remaining outputs remain low (0). A 3×8 decoder has three input lines (A, B, and C) and eight output lines (Y0 to Y7).

Truth Table for 3×8 Decoder:

The truth table shows how the 3-bit input corresponds to the output lines:

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A B C Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
0 0 0 1 0 0 0 0 0 0 0
0 0 1 0 1 0 0 0 0 0