Description

The M-8888 is a complete DTMF Transmitter Receiver that features adjustable guard time, automatic tone burst mode, call progress mode, and a fully compatible 8051, 8086/8 microprocessor interface.

Features

• Advanced CMOS technology for low power consumption and increased noise immunity

• Complete DTMF transmitter/receiver in a single chip

• Standard 8051, 8086/8 microprocessor port

• Central office quality and performance

• Adjustable guard time

• Automatic tone burst mode

• Call progress mode

• Single +5 Volt power supply

• 20-pin DIP and SOIC packages

• 2 MHz microprocessor port operation

• Inexpensive 3.58 MHz crystal

Applications

• Paging systems

• Repeater systems/mobile radio

• Interconnect dialers

• PBX systems

• Computer systems

• Fax machines

• Pay telephone

• Credit card verification