Cascading Multiplexer Circuits

Cascading multiplexer circuits enable the construction of larger multiplexers by using multiple smaller multiplexers to handle a greater number of input channels.

Cascading Multiplexer Circuits

This section discusses how to construct multiplexers with more input lines by cascading multiple smaller multiplexers.

Steps To Design Cascaded Multiplexer Circuits

This section outlines how to design cascaded multiplexer circuits using available ICs.

Example 8.3: Design A 16-To-1 Multiplexer

The section discusses the design of a 16-to-1 multiplexer using multiple 8-to-1 multiplexers.

Encoders

Encoders convert multiple input lines into a smaller number of output lines, producing a binary code for the active input.

Priority Encoder

A priority encoder is a specialized form of an encoder that outputs the binary code of the highest priority active input.

Example 8.5: Four-Line To Two-Line Priority Encoder

This section explains the design and functionality of a four-line to two-line priority encoder, emphasizing how input priorities affect output.

Demultiplexers And Decoders

This section discusses the concepts of demultiplexers and decoders, detailing their structures, operations, and applications in digital electronics.

Implementing Boolean Functions With Decoders

This section discusses how decoders can be utilized to implement Boolean functions by generating minterms with the help of OR gates.

Cascading Decoder Circuits

Cascading decoder circuits enable the construction of decoders with more input and output lines than are available in standard integrated circuits by connecting multiple simpler decoders.

Example 8.7: Implementing A Boolean Function With Decoder

This section illustrates how a Boolean function can be implemented using a decoder and an external OR gate.

Example 8.8: Constructing A 4-To-16 Line Decoder

The section explains how to construct a 4-to-16 line decoder using two 3-to-8 line decoders and outlines the procedure involved in cascading decoder circuits.

Example 8.9: Logic Status Of Ic 74154

This section analyzes the output behavior of the IC 74154 decoder based on its inputs and enable signals.

Application-Relevant Information

This section provides a list of commonly used integrated circuit (IC) types for multiplexers, encoders, demultiplexers, and decoders, along with their functions and logic families.

Review Questions

This section presents key review questions designed to reinforce the understanding of multiplexers, encoders, and decoders.