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Re: [AVR-Chat] 5V - 3V interfacing

2007-01-22 by David VanHorn

On 1/21/07, np np <harrabylad@yahoo.co.uk> wrote:
>
> I dont think I would use resistors as the R and C input would delay the
> signal.


Since the C on the inputs is a few pF, and you can use resistors on the
order of 1k, why are you worried?

A logic gate IC of some sort would be a better solution with low value pull
> ups on the outputs.


If you like, Maxim makes such chips. They are expensive, large, and hard to
get other than in sample quantities.
Resistors are cheap, easy, and small.

I assure you this works.


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