Suppressing digital pin switching noise

Grumpy_Mike:
As usual you know best with advice that contradicts the consensus. I would be very interested in seeing the report that says high peak current on processor output pins are no problem. Untill then I should warn beginners that you are well known here for crap and confusing advice.

How many memos did you keep from the '80s? But, since you asked, I can send you a link to the patent I got for the driver. At the time there was no CMOS. It was necessary to drive NMOS chips with 9V signals. No one could figure out how to drive rail to rail with a bipolar driver (a darlington pull-up actively drives only to within 2 Vbe's of +V). I came up with a circuit. If you scroll down through two pages you will come to the "Bootstrapped Driver Circuit", my first patent. My driver had a high fan-out load to memory cards. Thanks for asking.