Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!brutus.cs.uiuc.edu!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!m.cs.uiuc.edu!irwin
From: irwin@m.cs.uiuc.edu
Newsgroups: sci.electronics
Subject: Re: Prescaler IC needed
Message-ID: <21000053@m.cs.uiuc.edu>
Date: 12 Jan 90 01:39:20 GMT
References: <2986@teksce.SCE.TEK.COM>
Lines: 33
Nf-ID: #R:teksce.SCE.TEK.COM:2986:m.cs.uiuc.edu:21000053:000:1025
Nf-From: m.cs.uiuc.edu!irwin    Jan 11 11:06:00 1990


/* Written  1:33 pm  Jan 10, 1990 by jerryw@teksce.SCE.TEK.COM in m.cs.uiuc.edu:sci.electronics */
/* ---------- "Prescaler IC needed" ---------- */
>I'm trying to fix a TV tuner that has a bad prescaler IC.  The set isn't
>very old but the IC that's in it is apparently already obsolete.  I haven't
>been able to find a replacement anywhere.  I need help.

>The part is a Plessey SP4020 (or Siemens SDA4020).

>Plessey has another part (that is also now not available) that is a close
>second: SP4634.

>All of the other parts I can get won't work.   Can anyone suggest where I
>can get one of these parts?

>Jerry Willard,  Tektronix
>jerryw@teksce.SCE.TEK.COM
/* End of text from m.cs.uiuc.edu:sci.electronics */


You might try one of the two following companies, I have managed to
get out of date no longer manufactured ICs from them in the past.

Target Tronics, 216-248-7930, Debra King, (Ohio)

Rochester Electronics, 617-462-9332, (Boston)


Al Irwin
Univ of Illinois
Dept of Comp Sci
Urbana, IL
irwin@m.cs.uiuc.edu