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CD22202 - 5V Low Power DTMF Receiver

General Description

The CD22202 and CD22203 complete dual-tone multiple frequency (DTMF) receivers detect a selectable group of 12 or 16 standard digits.

No front-end pre-filtering is needed.

Key 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.

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Other Datasheets by Intersil (now Renesas)

Part Number Description
CD22203 5V Low Power DTMF Receiver
CD22204 5V Low Power Subscriber DTMF Receiver
CD22100 CMOS 4 x 4 Crosspoint Switch with Control Memory High-Voltage Type (20V Rating)
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CD22102 CMOS 4 x 4 x 2 Crosspoint Switch with Control Memory

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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 .intersil.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 detect a selectable group of 12 or 16 standard digits. No front-end pre-filtering is needed.