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M-985-01S Schematic ( PDF Datasheet ) - Clare Inc.

Teilenummer M-985-01S
Beschreibung Precise Call Progress and Special Information Tone Generator
Hersteller Clare Inc.
Logo Clare  Inc. Logo 




Gesamt 8 Seiten
M-985-01S Datasheet, Funktion
Features
Precise detection of call progress tones
Linear (analog) input
Digital (CMOS compatible), tri-state outputs
22-pin DIP and 20-pin SOIC
Single supply 3 to 5 volt (low power CMOS)
Inexpensive 3.58 MHz crystal time base
Wide dynamic range (30 dB)
Lower power consumption (power-down mode)
425 Hz detection
Special Information Tone (SIT) Detection
Applications
Automatic dialers
Dialing modems
Traffic measurement equipment
Test equipment
Service evaluation
Billing systems
M-985-01
Precise Call Progress and
Special Information Tone Generator
Description
The M-985-01 is an integrated circuit precise tone
detector for call progress and special information
tones (SIT), as defined by CCITT.
The use of integrated circuit techniques allows the
M-985-01 to pack the eight filters for call progress
detection into a single 22-pin DIP or a 20-pin SOIC. A
3.58 MHz crystal-controlled time base guarantees
accuracy and repeatability.
The M-985-01 combines the call progress detection of
the M-982-02 and the SIT detection of the M-984-02.
It has an operating voltage range down to 3V. It has
low power consumption under normal operating con-
ditions. A power down (PD) feature is provided to fur-
ther reduce power consumption when inactive.
Ordering Information
Part #
M-985-01P
M-985-01S
M-985-01T
Description
22-pin plastic DIP
20-pin plastic SOIC
20-pin plastic SOIC,Tape and Reel
Pin Diagram
Block Diagram
DS-M985-01-R1
www.clare.com
1






M-985-01S Datasheet, Funktion
M-985-01
Signal Timing (See Specifications)
Tri-State Timing
Typical Application
Power-Down Timing
6
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Rev. 1

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SeitenGesamt 8 Seiten
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