07-19-2013, 07:49 AM
The critical data entered into a timing diagram is the delay times and operating constraints of the system components. These timing parameters are generally expressed as a range (e.g. 5-10 ns) because there is some uncertainty associated with high volume component manufacture and circuit operating conditions. http://www.amazon.com/Dog-Wheelchair-Lar...B003VL5BZ4 To combat these uncertainties in component delays and constraints, designers have traditionally been forced to assume worst case operating conditions that are overly pessimistic with regard to maximum operating speed. This is because the probabilities associated with these ranges are generally treated as independent quantities.