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Article #19409Re: Need DTMF Decoder/Ringing Detector
From: Brian Cuthie
Date: Thu, 14 Jul 1988 04:05
Date: Thu, 14 Jul 1988 04:05
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If you're looking for a good ring detector, the best one I've seen is the Texas Instruments TCM1520A. As far as DTMF decoders go, there are a variety of things to be interested in when searching for one. If you are going to supply local dial tone then you need one with a good dial tone reject feature (like the Teltone M957). If you just want one that is cheap, then the SSI 202P is not a bad choice. Hope this helps. -brian -- Brian D. Cuthie uunet!umbc3!cbw1!brian Columbia, MD brian@umbc3.umd.edu "Captain, Captain! All the stars have gone out!" "No, you fool, you've leaned on the button. Turn the viewer back on!"
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arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!umd5!umbc3!cbw1!brianReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!umd5!umbc3!cbw1!brian From: brian@cbw1.UUCP (Brian Cuthie) Newsgroups: sci.electronics Subject: Re: Need DTMF Decoder/Ringing Detector Keywords: Need IC's to detect ringing and decode DTMF touch tone signals. Message-ID: <192@cbw1.UUCP> Date: 14 Jul 88 04:05:35 GMT References: <5317@super.upenn.edu> <380@n3dmc.UU.NET> <1988Jul12.200218.24569@gpu.utcs.toronto.edu> Reply-To: brian@cbw1.UMD.EDU (Brian Cuthie) Distribution: na Organization: CBW, Columbia, MD 21046 Lines: 17