a simple question about digital switching

[ulaska]

Hello,
i want to build this with a mux or something..
there is 4 channel select,
the selected channel's pin must be pulled down to GND.

CH1 ----O
CH2 ---O <----O---| GND
CH3 ---O
CH4 ----O



how can it be ?? i will use GPIOs for controlling the switch IC.
which IC (mux or etc.) i must use?

thanks and regards..

 

[verilog_coder]

You need to specify more details of requirements. What is the max. switching speed. What kind of signals are there like TTL, CMOS etc.

 

[_]

A common IC part would be the CD4066.

 

[rituparnasaikia]

You can use a any multiplexer with a microcontroller. You are using analog signals there are many multiplexars available in the market HC4351.
Rituparna

 

[Davood Amerion]

You can use CD4052 and connect its mux output to gnd.