HT9200A/HT9200B -- DTMF Generators

General Description

The HT9200A/B tone generators are designed for MCU interfaces. They can be instructed by a MCU to generate 16 dual tones and 8 single tones from the DTMF pin. The HT9200A provides a serial mode whereas the HT9200B contains a selectable serial/parallel mode interface for various applications such as security systems, home automation, remote control through telephone lines, communication systems, etc.

Features

  • Operating voltage: 2.5V~5.5V
  • Serial mode for the HT9200A
  • Serial/parallel mode for the HT9200B
  • Low standby current
  • Low total harmonic distortion
  • 3.58MHz crystal or ceramic resonator
  • HT9200A: 8-pin DIP/SOP package
    HT9200B: 14-pin SOP package

Technical Document

Other Information