CD74HC4051 74HC4051 744051 IC 8-CHANNEL ANALOG MULTIPLEXER
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If you want to use it as a multiplexer, you can select (output) a single input of 8 options.
If you want to use this is a demultiplexer you can write to a single output from 8 different options.
Pinout of the 74HC4051
There is some example code for working with an Arduino that is available by clicking here
Manufacturer Part No: CD74HC4051E
Package / Case: PDIP-16
Decoder / Encoder / Multiplexer / Demultiplexer Logic IC
Logic Type:Analog Multiplexer/Demultiplexer
Logic Base Number:744051
On Resistance, Rds(on):80ohm
No. of Outputs:8
No. of Pins:16
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