Datasheet Summary
DTMF Transceiver
Features
CMOS technology for low power con- Advanced sumption and increased noise immunity DTMF transmitter/receiver in a single
- plete 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
- puter systems
- Fax machines
- Pay telephone
- - Credit card verification Description The M-8888 is a plete DTMF Transmitter Receiver...