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Design >> Mixed-Signal Design >> Protecting logic inputs and outputs that go to external connectors
https://designers-guide.org/forum/YaBB.pl?num=1395399230

Message started by Northy on Mar 21^st, 2014, 3:53am

Title: Protecting logic inputs and outputs that go to external connectors
Post by Northy on Mar 21^st, 2014, 3:53am

Hi,

I have two boxes that I'd like to connect together so that when one triggers the other one triggers too. I've come up with the following circuit which I've prototyped and it seems to work well.

The logic signals will end up going to a connector though, and I'm nervous about damage to the devices through over voltage connection and ESD etc.

What sort of protection should I be looking at using to protect the devices?

Thanks,

G

Title: Re: Protecting logic inputs and outputs that go to external connectors
Post by loose-electron on Mar 26^th, 2014, 11:34am

http://electronicdesign.com/power/protect-your-fortress-esd

Give that a read. I hear that this guy really know his stuff! :) ;)