Holtek HT9200 DTMF Generator
- Holtek HT9200B, The HT9200A/B tone generators are designed for MCU interfaces, they can be instructed by a MCU to generate 16 dual tones & 8 single tones from the DTMF pin, 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. Holtek HT9200B SO-14 DTMF Generator