MT8870 DTMF Voice Decoder Decoding Module for Arduino

MT8870 DTMF Voice Decoder Decoding Module for Arduino

1.on-board decoding chip MT8870 complex frequency
2.onboard five LED indicators for easy viewing output state
3.the main chip pins basically have been drawn
4.on-board voice input interface
5.PCB size: 26.5 (mm) x24.5 (mm)

Q1 Binary Bit 1 Q2 Binary Bit 2 Q3 Binary Bit 3 Q4 Binary Bit 4 StQ Delayed String Output Represents Binary Bit 0 StQ Power Down Input IN Inhibit Input Logic high inhibits the detection of tones representing characters A, B, C and D VCC DC Supply Input 4.5V – 5.5V (5.0V Nominal) GND Ground