From: "Rob Bowmaker"
Subject: Re: High-speed components/design
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Date: Sat, 14 Dec 2002 09:22:25 +1300
NNTP-Posting-Date: Sat, 14 Dec 2002 09:22:23 NZDT
"John Larkin" wrote in
> On Thu, 12 Dec 2002 19:39:47 +1300, "Rob Bowmaker"
> >What kind of components do 100 megabit/second ethernet cards use? If they
> >100 megabits/second, that would mean that a response time of at most 10ns
> >would be required -- most components I've seen come anywhere near that!?
> >I'm especially interested in transistors and/or comparators that can deal
> >with such quick responses.
> >Thanks in advance,
> Even cheap, mass-production CMOS ASIC processes now have internal gate
> delays in the deep-sub-ns territory.
> 'Discrete' stuff can get pretty fast, too. Maxim and Analog Devices
> have comparators with 300 ps delays, and EclipsPlus logic is in the
> 200 ps ballpark. NEC and others have blindly fast bipolar and phemt
> The fast fiberoptic links (OC-768 or whatever) are up to 40 G
> bits/second... 400x faster than this. That gets tough.
> What sort of stuff are you interested in doing?
[Whooops, sorry about that last incomplete message, I accidentally hit the
send button too early....]
I'm probably not going to do these things, but I was interested in the
possible circuitry behind:
1. Fiber-optic transmission of ethernet signals
2. Radio transmission of ethernet signals.