HT9200A/HT9200B -- DTMF Generators 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 Operating voltage: 2.5V~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 HT9200A: 8-pin DIP/SOP package HT9200B: 14-pin SOP package 上海辰祥電子科技有限公司 聯(lián)系人：周平 13917885749