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CM8870 ISO2 CMOS Integrated DTMF Receiver IC

50.00 inc. GST
  • ISO2-CMOS Integrated DTMF Receiver
  • Clock Frequency: 3.579545MHz
  • Power Consumption: 15mW
  • Output low current: 2.5mA
  • Output high current: 0.8mA
  • Input offset voltage: 25mV
  • Common mode rejection: 40dB
  • Propagation time delay max. : 300ns
  • Supply voltage range: 4.75 to 5.25V
  • Package: DIP-18

DTMF Shield

800.00 inc. GST
  • MT8870 Decoder IC.
  • 4 Output digital pins.
  • Operates on 5V
  • Includes MT8870 DTMF Receiver IC
  • Receives and Converts Standard DTMF Codes
  • Remotely Switch Devices from Anywhere Using the Phone
  • Easily Connects to Most Microcontrollers or Roboduino Board
  • Low Power Consumption
  • 5 On-Board LED's For Data Received Indication
  • Standard Header Connections for Control System Connection
  • Audio socket for application
  • Speaker connector for audio sound checking.
  • Microphone connector for over the air remote control system( note, due to environmental noise, without any filtering system this method is not recommended)
  • Dimension: 37x37x9mm

MT8870 DTMF Audio/Speech Decoding Telephone Module

175.00 inc. GST
  • Power Input: 5V Nominal (4.5V - 5.5V)
  • 5 Channel Interface
  • Detects 0-9, A-D, *, #
  • 54” Pin pitch
  • On-board 3.5mm jack input Facility
  • On-board MT8870 frequency decoder chip
  • On-board voice input interface
  • On-board LED lights for output state indication
  • Low power consumption
  • Internal gain setting amplifier
  • Adjustable guard time
  • 5 Channel interface
  • Power-down mode
  • Inhibit mode
  • Does not require external circuits or wiring,
  • Dimension: 37 x 25 x 12 mm