Description

The MT88L89 is a monolithic DTMF transceiver with call progress filter. It is fabricated in CMOS technology offering low power consumption and high reliability.

Features

• Central office quality DTMF transmitter/receiver

• Low voltage operation (2.7-3.6V)

• Adjustable guard time

• Automatic tone burst mode

• Call progress tone detection to -30dBm

• Adaptive micro interface enables compatibility with existing MT8880/MT8888 designs

• DTMF transmitter/receiver power down via register control

Applications

• Credit card systems

• Paging systems

• Repeater systems/mobile radio

• Interconnect dialers

• Personal computers