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

General Description
The HT9200A/B tone generators are designed
for mC interfaces. They can be instructed by a
mC 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.

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