CD4051 Single 8-channel Multiplexer Demultiplexer – Datasheet

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The CD4051 is a part of CD4000 IC series, made by using the complementary MOS (CMOS) technology. CD4051 is a single 8-channel multiplexer having three binary control inputs. A, B, and C, and an inhibit input. The three binary signals select 1 of 8 channels to be turned “ON” and connect the input to the output. The multiplexer circuits dissipate extremely low quiescent power over the full VDD−VSS and VDD−VEE supply voltage ranges, independent of the logic state of the control signals. When a logical “1” is present at the inhibit input terminal all channels are “OFF”. The IC offers a wide array of features such as high noise immunity and low thermal dissipation.

Multiplexer

A multiplexer is a combinational logic circuit that switches one of several input lines to a single common output line. The select lines determine which input is connected to the output, and also to increase the amount of data that can be sent over a network within a certain time. It is also called a data selector.

Demultiplexer

A decoder/demultiplexer is a combinational logic circuit & an integral part of today’s consumer scale electronics. It is designed to switch one common input line to one of several separate output lines. So, A demultiplexer converts a serial data signal at the input to parallel data at its output lines.

CD4051 Key Features

  • Wide range of digital and analog signal levels: digital 3 – 15V, analog to 15Vp-p
  • Low “ON” resistance: 80Ω (typ.) over entire 15Vp-p signal-input range for VDD − VEE = 15V
  • High “OFF” resistance:
    • channel leakage of ±10 pA (typ.) at VDD − VEE = 10V
  • Logic level conversion for digital addressing signals of
    • 3 – 15V (VDD − VSS = 3 – 15V) to switch analog signals
    • to 15 Vp-p (VDD − VEE = 15V)
  • Matched switch characteristics:
    • ∆RON = 5Ω (typ.) for VDD − VEE = 15V
  • Very low quiescent power dissipation under all
    • digital-control input and supply conditions:
    • 1 µ W (typ.) at VDD − VSS = VDD − VEE = 10V
  • Binary address decoding on chip

CD4051 Pinout

Pin NoPin NameDescription
1I/O 4channel 4 i/o
2I/O 6channel 6 i/o
3O/I common i/o
4I/O 7channel 7 i/o
5I/O 5channel 5 i/o
6INHIBITdisable all channel
7VEEEmitter supply
8VSSsource supply
9Cinput c
10Binput b
11Ainput a
12I/O 3channel 3 i/o
13I/O 0channel 0 i/o
14I/O 1channel 1 i/o
15I/O 2channel 2 i/o
16VDDDrain supply

Application

  • Analog and Digital Multiplexing and Demultiplexing
  • A/D and D/A Conversion
  • Signal Gating
  • Factory Automation
  • Televisions
  • Appliances
  • Consumer Audio
  • Programmable Logic Circuits
  • Sensors

CD4051 Datasheet

You can download the datasheet for CD4051 Single 8-channel Multiplexer/Demultiplexer from the link given below:

See Also: CD4526 Divide-by-N Counter – Datasheet | CD4527 BCD Rate Multiplier – Datasheet | CD4093 Quad 2-Input NAND Schmitt Trigger – Datasheet