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M-8888-01T Datasheet(PDF) 1 Page - Clare, Inc. |
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M-8888-01T Datasheet(HTML) 1 Page - Clare, Inc. |
1 / 14 page www.clare.com DS-M8888-R1 M-8888 DTMF Transceiver 1 Features · Advanced CMOS technology for low power con- sumption 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 Description The M-8888 is a complete DTMF Transmitter Receiver that features adjustable guard time, auto- matic tone burst mode, call progress mode, and a fully compatible 8051, 8086/8 microprocessor interface. The receiver portion is based on the industry standard M-8870 DTMF Receiver, while the transmitter uses a switched-capacitor digital-to-analog converter for low- distortion, highly accurate DTMF signaling. Tone bursts can be transmitted with precise timing by mak- ing use of the automatic tone burst mode. To analyze call progress tones, a call progress filter can be select- ed by an external microprocessor. Ordering Information Pin Connections Block Diagram Part # Description M-8888-01P 20-pin plastic DIP M-8888-01SM 20-pin plastic SOIC M-8888-01T 20-pin plastic SOIC,Tape and Reel |
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