Re: IBIS Model question

"Mathew, Elizabeth (MED)" wrote:
>
> Hi IBIS Gurus,
> In the IBIS model of any part does the term
> "dv/dt_r" correspond to the rise time (tr - as denoted in the datasheet)
> of that particular part?
> Thanks,
> Elizabeth
>
> Elizabeth Mathew
> Signal Integrity Expert,
> Global Electrical Technology Center,
> GE Medical Systems,
> Phone:(262)544-3776
> Fax:(262)548-2315
> <mailto:Elizabeth.Mathew@med.ge.com>

dV/dt_r is defined as the time to go from 20% to 80%
of the swing from low to high. This may not correspond exactly
to the risetime as defined in a datasheet; you have to check how
it's measured for the datasheet to be sure.

-- 
Kim Helliwell
Senior CAE Engineer
Acuson Corporation
Phone: 650 694 5030  FAX: 650 943 7260