Logic Diagram For 3 8 Decoder

The block diagram of 4 to 16 decoder using 3 to 8 decoders is shown in the following figure.

Logic diagram for 3 8 decoder. But for understanding the basics of 3 to 8 decoder circuit how a 3 to 8 decoder circuits work these circuits which shown below are very important. The circuit is designed with and and nand logic gates. This decoder circuit gives 8 logic outputs for 3 inputs and has a enable pin. 3 line to 8 line decoder.

How to implement boolean functions using decoder is also explained. This decoder circuit gives 8 logic outputs for 3 inputs. Logic diagram of 3 to 8 decoder. 3 to 8 decoder with truth table and logic gates we know possible outputs for 3 inputs so construct 3 to 8 decoder having 3 input lines a enable input and 8 output lines.

The circuit is designed with and and nand combinations it takes 3 binary inputs and activates one of the eight outputs. 3 to 8 line decoder circuit is also called as binary to an octal decoder. 3 to 8 line decoder has a memory of 8 stages. The parallel inputs a 2 a 1 a 0 are applied to each 3 to 8 decoder.

Why 74138 has 3 enable pins is also discussed. You can clearly see the logic diagram is developed using the and gates and the not gates. It takes 3 binary inputs and activates one of the eight outputs. It is also called a binary to octal decoder since the inputs represent 3 bit binary numbers and the outputs represent the eight digits in the octal number system.

And gate not gate or gate. The complement of input a3 is connected to enable e of lower 3 to 8 decoder in order to get the outputs y 7 to y 0. The below circuits are made by the basic logic gates i e. Decoder block diagram 3 to 8 decoder.

Pin diagram of 3 8 decoder. 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. This is also called a 1 of 8 decoder since only one of eight output lines is high for a particular input combination.