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

1. Operating voltage: 2.5V~5.5V
2. Serial mode for the HT9200A
3. Serial/parallel mode for the HT9200B
4. Low standby current
5.Low total harmonic distortion
6. 3.58MHz crystal or ceramic resonator
7.HT9200A: 8-pin DIP/SOP package
8.HT9200B: 14-pin SOP package