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
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