MT8870 IC - (SMD SOIC-18 Package) - Integrated DTMF Receiver IC

The MT8870D/MT8870D-1 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. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface Features:- 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 Applications:- Receiver system for British Telecom (BT) or CEPT Spec (MT8870D-1) Paging systems Repeater systems/mobile radio Credit card systems Remote control Personal computers Telephone answering machine Specifications:- 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 Package Includes:- 1 x MT8870 IC - (SMD SOIC-18 Package) - Integrated DTMF Receiver IC