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Article #9399Re: Need info on DTMF decoder chips.
From: Greg DesBrisay
Date: Thu, 10 Jan 1991 01:48
Date: Thu, 10 Jan 1991 01:48
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Here's a list that I compiled a couple of months ago of companies that make DTMF receivers. Teltone in Kirkland, WA (800-426-3926, 206-827-6050 (fax)) makes their 8870 DTMF receiver (18-pin DIP, single 5V supply, aprox. $5.75 ea. in single quantities) Sierra Semiconductor in San Jose, CA makes DTMF receivers (SC11202/SC11203/SC11204 and SC11270/SC11271), and transceivers (SC11280, SC11289, and SC11290). Most of these require only a single 5V supply. The complete circuit for the SC11280 transceiver requires only a few external resistors and capacitors and an external crystal, and it can interface directly to a microprocessor. Silicon Systems in Tustin, CA also makes several DTMF receivers and transceivers that all operate on a single 5V supply as well. Greg DesBrisay
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!pacbell.com!decwrl!ads.com!sparkyfs.erg.sri.com!gd From: gd@erg.sri.com (Greg DesBrisay) Newsgroups: sci.electronics Subject: Re: Need info on DTMF decoder chips. Message-ID: <1991Jan10.014811.11119@erg.sri.com> Date: 10 Jan 91 01:48:11 GMT References: <1991Jan6.213544.5386@techbook.com> Sender: news@erg.sri.com Distribution: usa Organization: SRI International, Menlo Park, CA Lines: 24