Cm8870 dtmf decoder datasheet 7404

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The CM8870/70C decoder uses digital counting techniques for the detection and decoding of all 16 DTMF tone pairs into a 4-bit code. This DTMF receiver minimizes external component count by providing an on-chip differential input amplifier, clock generator, and a latched three-state interface bus.

A DTMF encoding sister chip to the CM8870 has been obtained and testing will begin on it this summer. Another sensor that has been interfaced with the Robo-Magellan robot that would be of use in this subsystem is the HMC6352 digital compass. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The CAMD CM8870/70C provides full DTMF receiver capability by integrating both the band-split filter and digital decoder functions into a single 18-pin DIP, SOIC, or 20-pin PLCC package.

AN001 Antar muka DTMF Decoder dengan DST-51. Teknik pengambilan sinyal DTMF oleh AT89C51 Minimum System dengan menggunakan IC MT8870/CM8870 sebagai konverter DTMF ke binary. Komponen pendukung: – MT8870 dari Mitel atau CM8870 dari CMD. Modul pendukung: – DF-87 DTMF Decoder: AN002 Antar muka DTMF Encoder/Decoder dengan DST-51