Re: [SI-LIST] : Some Semiconductors are Unnecessarily Fast

Poulet P. (poulet@fax.ussj.ricoh.com)
Mon, 12 Jul 1999 15:25:12 -0700

Totally agree Roy but what are we going to do, beef up or purchasing department to try to locate slower part more in tune with our clock rates or hire SI engineers to fight with those unnecessary edge rates.

Roy Leventhal wrote:

> Several recent threads have commented that few nets on a board used to be a
> signal integrity challenge in the past and now almost all are.
>
> What we are seeing are a number of instances where the semiconductor companies
> are producing parts with edge rates way faster than the clock and application
> calls for. Parts with 500ps rise times or less and clock periods of 100ns or
> more. SI engineers are seeing more demand for their skills what with shrinking
> geometries and lack of (care? concern?) edge rate control on drivers.
>
> But, this is "make work" and is not the road to world class competitiveness for
> our companies. There are enough real world signal integrity problems for us to
> tackle without any "help" of this sort from the semiconductor manufactures.
>
> Roy Leventhal
>
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--
Philippe Poulet
Hardware Engineer
RICOH Corp
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