CM8870 DTMF CMOS Receiver (CM8870PI MT8870) ICs. (Pack of 3)

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SKU: MT8870 (Pack of 3) Category: Tag:



CM8870 CMOS DTMF Receiver (Also known as 8870
or MT8870 or CM8870PI), 18 Pins DIP case. 


Pack containing: Three ICs 

To download a full datasheet click here.

   The CAMD CM8870 provides full DTMF receiver capability by integrating both the bandsplit filter and digital decoder functions into a single 18-pin DIP package. The CM8870 is manufactured using state-of-the-art CMOS process technology for low power consumption (35mW, max.) and precise data handling. The filter section uses a switched capacitor technique for both high and low group filters and dial tone rejection. 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. The on-chip clock generator requires only a low cost TV crystal or ceramic resonator as an external component.


  • Full DTMF receiver
  • Less than 35mW power consumption
  • Industrial temperature range
  • Uses quartz crystal or ceramic resonators
  • Adjustable acquisition and release times
  • 18-pin DIP


  • PABX
  • Central office
  • Mobile radio
  • Remote control
  • Remote data entry
  • Call limiting
  • Telephone answering systems
  • Paging systems  ) Integrated Circuit, DIP-16 Case. CMOS COUNTER/DIVIDERS.
    Manufactured by Texas Instruments. 

Additional information

Weight 50 kg