Datasheet
The MT88L70 is a complete 3 Volt, 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 tonepairs 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.
Function | DTMF Receiver |
Interface | – |
Number of Circuits | 1 |
Voltage – Supply | 2.7 V ~ 3.6 V |
Current – Supply | 2mA |
Power (Watts) | – |
Operating Temperature | -40°C ~ 85°C |
Supplier Device Package | 20-SSOP |