HT9200A
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 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.
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