The HT9200B tone generators are designed for microconroller interfaces. They can be instructed by a mC to generate 16 dual tones and 8 single tones from the DTMF pin. 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: 2.0V~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