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  • MT8870 IC - DTMF Decoder IC

The MT8870 is a complete DTMF receiver integrating both the band split 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

Related Document:-
MT8870 IC Data Sheet

Brand/Manufacturer Generic
Country Of Origin China
Packer / Importer Address Constflick Technologies Limited, Building No 13 and 14, 3rd Floor, 2nd Main, Siddaiah Road, Bangalore, Karnataka - 560027 India.
MRP Rs. 59 (Inclusive of all Taxes)
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MT8870 IC - DTMF Decoder IC

  • Product Code: EC-0459
  • Availability: 779
  • Rs.50.00
  • (Excluding 18% GST)


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