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MT8870 IC – DTMF Decoder IC

52.00 Excluding tax

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The MT8870 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for 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.


  • 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


Symbol Parameter Min Max Units
VDD DC Power Supply Voltage 7 V
VI Voltage on any pin VSS-0.3 VDD+0.3 V
II Current at any pin (other than supply) 10 m A
TSTG Storage temperature -65 150 °C
PD Package power dissipation 500  m W

MT8870-IC-DTMF-Decoder-IC Datasheet

* product image for illustration purposes only. actual product may vary.


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