>> The first pic is plenty capable of driving the second pic, I want to
>> add the resistor to keep EMI as low as possible but not make the
>> resistor so large that it isn't reliable.
>
> Which will probably work on the bench, but fail at 5 degrees lower in
> temp, or when the humidity rises, or when the PCB it's built on has
> slightly thinner copper, etc. I personally see such an approach as
> ASKING for gremlins.

I really doubt if 100 ohms is going to cause it to stop working. But it
might reduce EMI or power supply noise. That's why I'm asking if anyone
has done 2 pics off one crystal on a large number of boards, and what they
did, and if they did any testing. Previously I have just used no resistor,
but just on a couple of personal projects and didn't care about noise.

Cheerful regards,

Bob




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