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M-88L70-01P Datenblatt(PDF) 1 Page - Clare, Inc. |
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M-88L70-01P Datenblatt(HTML) 1 Page - Clare, Inc. |
1 / 8 page 1 www.clare.com M-88L70 DS-M88L70-R1 The M-88L70 monolithic DTMF receiver offers small size, low power consumption and high performance, with 3 volt operation. Its architecture consists of a bandsplit filter section, which separates the high and low group tones, followed by a digital counting section which verifies the frequency and duration of the received tones before passing the corresponding code to the output bus. • Telephone switch equipment • Mobile radio • Remote control • Paging systems • PCMCIA • Portable TAD • Remote data entry • Operates between 2.7 and 3.6 volts • Low power consumption • Power-down mode • Inhibit mode • Central office quality and performance • Inexpensive 3.58 MHz time base • Adjustable acquisition and release times • Dial tone suppression • Functionally compatible with Clare’s M-8870 Applications Features Description 3V DTMF Receiver Ordering Information Part # Description M-88L70-01P 18-pin plastic DIP M-88L70-01S 18-pin SOIC M-88L70-01T 18-pin SOIC, Tape and Reel Figure 2 Block Diagram Figure 1 Pin Connections The M-88L70 is a full DTMF Receiver that integrates both bandsplit filter and decoder functions into a single 18-pin DIP or SOIC package. Manufactured using CMOS process technology, the M-88L70 offers low power consumption (18 mW max), precise data handling and 3V operation. Its filter section uses switched capaci- tor technology for both the high and low group filters and for dial tone rejection. Its decoder uses digital counting techniques to detect and decode all 16 DTMF tone pairs into a 4-bit code. External component count is minimized by provision of an on-chip differential input amplifier, clock generator, and latched tri-state interface bus. Minimal external components required include a low-cost 3.579545 MHz color burst crystal, a timing resistor, and a timing capacitor. |
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Ähnliche Beschreibung - M-88L70-01P |
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