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CD22204 Datasheet 5V Low Power Subscriber DTMF Receiver

Manufacturer: Intersil (now Renesas)

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Overview

CD22204 Data Sheet February 1999 File Number 1696.4 5V Low Power Subscriber DTMF Receiver The CD22204 complete dual tone multiple frequency (DTMF) receiver detects a selectable group of 12 or 16 standard digits.

No front-end pre-filtering is needed.

The only externally required components are an inexpensive 3.579545MHz TV ‘‘colorburst’’ crystal (for frequency reference) and a bias resistor.

Key Features

  • No Front End Band Splitting Filters Required.
  • Single Low Tolerance 5V Supply.
  • Three-State Outputs for Microprocessor Based Systems.
  • Detects all 16 Standard DTMF Digits.
  • Uses Inexpensive 3.579545MHz Crystal.
  • Excellent Speech Immunity.
  • Output in 4-Bit Hexadecimal Code.
  • Excellent Latch-Up Immunity Pinouts CD22204 (PDIP) TOP VIEW D2 1 D1 2 EN 3 VDD 4 NC 5 14 D4 13 D8 12 DV 11 ATB 10 XIN 9 XOUT 8 VSS Ordering Information PART.

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