DTMF decoder and DC-DC converter data wanted

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Article #7885

#7885

From: Kyler Laird
Date: Fri, 19 Oct 1990 21:27

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I should have asked, but I was so excited to find someone who had DTMF
decoders in stock...

So now I have three IC's without data sheets.  (Kinda like having a great
computer w/o an OS...  o.k., not quite)

They're identified as:
	UM9203
	9029S
	918683

They're 18-pin, so I assume they have some extra features like call progress
monitoring... (more features than Radio Shack's)

Also, I got a DC-DC conveter (to pass the $20 minimum).  5-pin inline.  Groups
of 3 pins and 2 pins.  Any ideas?  I'm guessing 2 in, 2 out, one control.

Thanks for the help - the help I've gotten from the net already has made my
project infinitely more 'do-able' (from 0% - xx%).  I appreciate it.

--kyler

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!know!sdd.hp.com!wuarchive!udel!haven!purdue!mentor.cc.purdue.edu!lairdkb
From: lairdkb@mentor.cc.purdue.edu (Kyler Laird)
Newsgroups: sci.electronics
Subject: DTMF decoder and DC-DC converter data wanted
Message-ID: <15401@mentor.cc.purdue.edu>
Date: 19 Oct 90 21:27:16 GMT
Reply-To: lairdkb@mentor.cc.purdue.edu (Kyler Laird)
Organization: Purdue University
Lines: 21