[SI-LIST] Re: flight time = propagation delay?
- From: "Ingraham, Andrew" <Andrew.Ingraham@xxxxxx>
- To: "[SI-LIST]" <si-list@xxxxxxxxxxxxx>, <HouKevin@xxxxxxxxxx>
- Date: Fri, 15 Nov 2002 08:47:26 -0500
> flight is equal to propagation delay?
No.
Propagation delay might mean the silicon delay of a buffer.
Or it might mean the apparent wire delay from one IC output pin to an
input pin.
Or a combination of both. Or something else.
There are several ways to specify wire or net propagation delay, and you
can get a negative number depending on how it is done. But the flight
time of the electromagnetic signal is always positive.
Andy
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