[SI-LIST] Re: Hysteresis in SI (Signal Integrity)??
- From: steve weir <weirsp@xxxxxxxxxx>
- To: hans.mellberg@xxxxxxxxxxxx,
- Date: Tue, 10 Feb 2004 14:22:44 -0800
Hans,
I disagree. Hysteresis only slows the system down by the hysteresis
voltage divided by the signal slew rate. Hysteresis has been offered in
fast transceivers for many years and is pretty standard. Most of the
discrete bus transceivers out there include 100 - 200mV hysteresis. And
it's a good thing, otherwise SSO could be a much worse problem.
Steve.
At 01:50 PM 2/10/2004 -0800, hansm wrote:
>If you do a google on hysterisis you will be swamped by magnetic related
>articles etc. Maybe the original question was regarding delayed response to
>settle down reflections, overshoot issues which may be called by some
>uninformed as hysterisis. The cost is, of course, system slowdown if you
>simple solve si-related problems with "hysterisis"
>
>Hans Mellberg
>Engineering Manager
>
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