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CD4051 - Single 8-channel Multiplexer/Demultiplexer IC

CD4051 - Single 8-channel Multiplexer/Demultiplexer IC

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  • Wide Range of Digital and Analog Signal Levels
  • Low ON Resistance,125 Ω (Typical) Over 15 VP-P Signal Input Range for VDD – VEE = 18 V
  • High OFF Resistance, Channel Leakage of ±100 pA (Typical) at VDD – VEE = 18 V
  • Binary Address Decoding on Chip
  • 5 V, 10 V, and 15 V Parametric Ratings
  • 100% Tested for Quiescent Current at 20 V
  • Maximum Input Current of 1 µA at 18 V Over Full Package Temperature Range, 100 nA at 18 V and 25°C
  • Break-Before-Make Switching Eliminates Channel Overlap

CD4051 - Single 8-channel Multiplexer/Demultiplexer IC

The CD4051 analog multiplexers and demultiplexers IC are digitally-controlled analog switches having low ON impedance and very low OFF leakage current. These 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.


Pinout of CD4051 Multiplexer/Demultiplexer IC

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Selected qty of IC - CD4051


Part number CD4051
Configuration 08:01
Number of channels (#) 1
Ron (Typ) (Ohms) 125
Bandwidth (MHz) 20
Rating Catalog
Operating temperature range (C) -55 to 125
Input/output continuous current (Max) (mA) 10
Supply current (Typ) (uA) 0.04
Features Break-before-make
ON-state leakage current (Max) (µA) 0.3
CON (Typ) (pF) 30

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1.What is CD4051?

  • The CD4051 is an 8-channel analogue multiplexer and demultiplexer that is controlled by a digital signal. As a result, they are commonly referred to as Digitally-controlled Analog Switches. It has a low ON impedance and a very low OFF leakage current. It dissipates very little power over the entire VDD-VSS and VDD-VEE voltage ranges.

2.How does 4051 multiplexer work?

  • The CD4051B is an 8-channel multiplexer with three binary control inputs, A, B, and C, as well as an inhibit input. The three binary signals turn on one of the eight channels and connect one of the eight inputs to the output.