Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!killer!pollux!dalsqnt!rpp386!pigs!haugj
From: haugj@pigs.UUCP (The Beach Bum)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 40 MHZ 286?
Message-ID: <397@pigs.UUCP>
Date: 8 Sep 88 15:33:29 GMT
References: <342@intek01.UUCP> <16800359@clio>
Reply-To: haugj@pigs.UUCP (The Beach Bum)
Organization: The Big "D" Home for Wayward Hackers
Lines: 16

In article <16800359@clio> berger@clio.las.uiuc.edu writes:
>Not to mention, a 40 MHz clock requires a lot of radio-frequency
>engineering.  

not true.  digital methods work very well at 40MHz.  lead length
becomes a factor and power requirements go up, but nothing
resembling "radio-frequency engineering".  fairchild Fast (74F)
series parts should handle the speed.  (probably even 74S as
well)  i don't know of any 80MHz shift registers or flip-flops
so getting a good clean 50% duty cycle is going to be a bitch,
but then you can always go 10K ECL for the clock and convert
back to TTL levels ;-)
-- 
=-=-=-=-=-=-=-The Beach Bum at The Big "D" Home for Wayward Hackers-=-=-=-=-=-=
               Very Long Address: John.F.Haugh@rpp386.dallas.tx.us
                         Very Short Address: jfh@rpp386
                           "ANSI C: Just say no" -- Me