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