HT9200B(1998) 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT9200B Datasheet PDF : 8 Pages
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HT9200A/B
DTMF Generators
Features
• Operating voltage: 2.0V~5.5V
• Serial mode for the HT9200A
• Serial/parallel mode for the HT9200B
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
Selection Table
• Low standby current
• Low total harmonic distortion
• 3.58MHz crystal or ceramic resonator
selectable serial/parallel mode interface for
various applications such as security systems,
home automation, remote control through tele-
phone lines, communication systems, etc.
Block Diagram
1
21st Aug ’98
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