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Re: 4V - 5V signal on Digital Input
Quote:
Originally Posted by tdlrali
We have an input signal that is at 4V when it is low, and at 5V when it is high. How could we bring the voltage down so that we can read it in as a digital input?
And no, analog inputs are not an option  |
Do you mind my asking why analog inputs are not an option? Are you already using all of the analog inputs on the controller?
If you need to use a digital input, the suggestion of using an LM339 (4 comparators in a package) or an LM393 (2 comparators in a package) is a good approach.
Data sheets can be found online:
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Last edited by Ken Streeter : 06-03-2008 at 11:49.
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