CD4051 Single 8 Channel Analog Multiplexer or Demultiplexer IC

The CD4051 analog multiplexers/demultiplexers come as digitally controlled analog switches.  They feature a low “ON” impedance and very low “OFF” leakage currents. Moreover, the Control of analog signals up to 15Vp-p  achieved via digital signal amplitudes of 3−15V. For example, if VDD = 5V, VSS = 0V and VEE = −5V, analog signals from −5V to +5V can be controlled via digital inputs of 0−5V.

Over the entire VDDVSS and VDDVEE supply voltage ranges, the MUX/DEMUX circuits dissipate very little quiescent power. Which is independent of the control signals’ logic state. All channels are “OFF” when a logical “1” is present at the inhibit input terminal. With three binary control inputs, the CD4051BC is a single 8-channel multiplexer. A, B, and C, as well as a disable input. The three binary signals select 1 of 8 channels to be turned “ON” and connect the input to the output. Meanwhile, the IC’s output is always TTL, making it simple to interface with other TTL devices and microcontrollers. Thermal overload protection and ESD protection are among the many features included in the IC.

A multiplexer is a logic circuit that connects one or more input lines to a single common output line. The select lines decide which inputs are connected to which outputs, as well as how much data may be transferred over a network in a given amount of time. A combinational logic device that switches one common input line to one of several independent output lines is known as a decoder/demultiplexer. So, A demultiplexer is a device that converts a serial data signal to parallel data on its output lines.

Application

• Multiplexer and Demultiplxer circuit
• A/D and D/A converter circuits
• Network switching
•  Programmable Logic circuits.