[sdiy] CD4066/4016 Question

[jhaible at debitel.net]

Connect the control inputs to vdd or vss, whatever is easier in your
layout. Connect in's and outs to vdd or vss, whatever is easier.
The only combination to *avoid* is control = vdd and both sides
of the switch connected to different voltage. Now I presume the
chips woud even survive _this_ (current limiting), but current
consumption would be unneccesarily high. (;->)

JH.



Zitat von Jim Patchell <patchell at cox.net>:

> 	The switch i/o pins it doesn't really matter.  You can float them, or 
> connect them to some voltage that is between Vdd and Vss...however, make 
> sure they are all connected to the same voltage, otherwise the smoke 
> might try and make an escape from the package.  I just leave them 
> floating myself.
> 
> RFahl wrote:
> > Hello,
> > 
> > I've got a quick question about what to do with unused switches on a
> CD4016.
> > I know that typically you connect unused inputs to ground (or VSS), but
> > since on this chip inputs can be used as outputs, it's not 100% clear to
> me.
> > Do you just leave them all floating or connect them all to GND? What about
> > the control inputs?
> > 
> > Romeo
> > 
> > 
> 
> 
> 
> 
> 




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