Description
The MT8889C 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 power consumption
• High speed adaptive micro interface
• Adjustable guard time
• Automatic tone burst mode
• Call progress tone detection to -30dBm

Applications
• Credit card systems
• Paging systems
• Repeater systems/mobile radio
• Interconnect dialers
• Personal computers