November 2002 UC T NT P RO D E T E CEME L OBSO DED REPLA enter at EN rt C /tsc COMM S uppo NO RE r Technical .
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com u ww to contac TERSIL or w IN 8 8 1-8 ® CD22202, CD22203 5V Low Power DTMF Receiver Features • Central Office Quality • No Front End Band Splitting Filters Required • Single, Low Tolerance, 5V Supply • Detects Either 12 or 16 Standard DTMF Digits • Uses Inexpensive 3.
579545MHz Crystal for Reference • Excellent Speech Immunity • Output in Either 4-Bit Hexadecimal Code or Binary Coded 2-of-8 • Synchronous or Handshake Interface • Three-State Outputs • Excellent Latch-Up Immunity Description The CD22202 and CD22203 complete dual-tone multiple frequency (DTMF) receivers ...

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