The M-8880 is a complete DTMF Transmitter/Receiver that features adjustable guard time, automatic tone burst mode, call progress mode, and a fully compatible 6500/6800 microprocessor interface.
⢠Advanced CMOS technology for low power consumption
and increased noise immunity
⢠Complete DTMF transmitter/receiver in a single chip
⢠Standard 6500/6800 series 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
⢠No continuous f2 clock required, only strobe
⢠Applications include: paging systems,
repeater systems/mobile radio, interconnect dialers,
PBX systems, computer systems, fax machines,
pay telephones, credit card verification
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