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M-985-01 Datasheet, PDF (1/8 Pages) Clare, Inc. – Precise Call Progress and Special Information Tone Generator
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
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