P.S. It nags at me that the "absolute max" ratings specify Vcc+0.3V: I wonder if this is the forward drop of the internal clamping diodes, or an arbitrary (x 0.5) safety-factor applied to the usual 0.6V? -Dave. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics