🚀 go-pugleaf

In article <1450@brwa.inmos.co.uk> davidb@inmos.co.uk (David Boreham) writes:
>Several posters have refered to removing ESD protection on chip
>pads, and alluded to consequent speed advantages. Mabe I'm missing
>something but as far as I know the reason why off-chip signals are
>slower than on-chip ones is a combination of the following:
>
>1) Much larger capacitance (25pf minimum or 50--100 pf for busses).
...
>I think these are probably ranked in order of importance. ESD must surely
>be less important than these.

	Actually, I believe ESD is the prime reason for (1) above, so it
is the biggest target (for very high speed designs).

	Of course, I'm just a software guy, what do I know?  ;-)

-- 
Randell Jesup, Commodore Engineering {uunet|rutgers|allegra}!cbmvax!jesup