Description
●The MT8888C is a monolithic DTMF transceiver with call progress filter. It is fabricated in CMOS technology offering low power consumption and high reliability.
●The receiver section is based upon the industry standard MT8870 DTMF receiver while the transmitter utilizes a switched capacitor D/A converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing. A call progress filter can be selected allowing a microprocessor to analyze call progress tones.
●Features
●• Central office quality DTMF transmitter/receiver
●• Low power consumption
●• High speed Intel micro interface
●• Adjustable guard time
●• Automatic tone burst mode
●• Call progress tone detection to -30 dBm
●Applications
●• Credit card systems
●• Paging systems
●• Repeater systems/mobile radio
●• Interconnect dialers
●• Personal computers
Mitel
Integrated DTMF Transceiver with Intel Micro Interface
Microsemi
DTMF TXRX 3.58MHz CMOS 5V 20Pin PDIP Tube
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DTMF TXRX 3.58MHz CMOS 5V 20Pin SOIC T/R
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DTMF TXRX 3.58MHz CMOS 5V 28Pin PLCC T/R
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DTMF TXRX 3.58MHz CMOS 5V 28Pin PLCC Tube
Zarlink
Integrated DTMF Transceiver with Intel Micro Interface
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