MT8870DE MT8870 - Integrated DTMF Receiver IC



The MT8870DE is a complete DTMF receiver integrating both the band-split filter and digital decoder functions. The filter section uses switched capacitor techniques  or high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone pairs into a 4-bit code. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface.


  • MT8870DE 

This item features:

  • Complete DTMF Receiver

  • Low power consumption
  • Internal gain setting amplifier

  • Adjustable guard time

  • Central office quality
  • Power-down mode

  • Inhibit mode

  • Backward compatible with MT8870C/MT8870C-1


  • New and Authentic Component(s) - MT8870D-1 Integrated DTMF Receiver IC.
  • Friendly Note: Be mindful of the many, inexpensive, counterfeits available on the market.

General details:

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