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:-

Package Includes:-

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