William "Chops" Westfield wrote: > I would define "push pull" as any output that can both sink and source > current, in either analog or digital circuits. Ah, with this, you'd leave the pure world, though, and be just where things work... at your peril :) Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist