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M-88L70-01S Scheda tecnica(PDF) 1 Page - Clare, Inc.

Il numero della parte M-88L70-01S
Spiegazioni elettronici  3V DTMF Receiver
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Produttore elettronici  CLARE [Clare, Inc.]
Homepage  http://www.clare.com
Logo CLARE - Clare, Inc.

M-88L70-01S Scheda tecnica(HTML) 1 Page - Clare, Inc.

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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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