HT9200 datasheet(1/8 Pages) HOLTEK

Part #	HT9200

Description	DTMF Generators

PDF	8 Pages

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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HT9200A/B

DTMF Generators

Selection Table

Block Diagram

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

µC interfaces. They can be instructed by a

µC 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 tele-

phone lines, communication systems, etc.

1

21st Aug ’98

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