Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!husc6!cmcl2!rutgers!topaz.rutgers.edu!ron From: ron@topaz.rutgers.edu (Ron Natalie) Newsgroups: sci.electronics Subject: Re: DTMF Message-ID: <13386@topaz.rutgers.edu> Date: Sun, 19-Jul-87 20:25:29 EDT Article-I.D.: topaz.13386 Posted: Sun Jul 19 20:25:29 1987 Date-Received: Mon, 20-Jul-87 00:39:25 EDT References: <1377@mit-amt.MEDIA.MIT.EDU> Organization: Rutgers Univ., New Brunswick, N.J. Lines: 10 Silicon Systems SSI 201 Integrated DTMF Reciever. I bought mine for $5.00 including the crystal and a 22 pin socket. Outputs in binary (except that Zero is coded 10) Uses 12V supply and a Color Burst (3.579545 MHz) Crystal. The application notes even point out how to add pusle dial detection to the chip. -Ron