[ntp:questions] Performance?

David Woolley david at ex.djwhome.demon.co.uk.invalid
Tue Dec 30 22:16:49 UTC 2008


> Yes, and 0 V lies right in the middle of that, and teh behaviour is apt to
> be undefined.


The behaviour for RS232 control lines is not undefined.  O volts is 
unequivocally OFF.  In practice, the same receivers are used for data lines.

The significance of the transition region is that drivers have to be 
monotonic in that range.  It's not a requirement on receivers.




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