m-985-01 Clare, Inc., m-985-01 Datasheet

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m-985-01

Manufacturer Part Number
m-985-01
Description
Precise Call Progress And Special Information Tone Generator
Manufacturer
Clare, Inc.
Datasheet
Features
Applications
Block Diagram
DS-M985-01-R1
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
Automatic dialers
Dialing modems
Traffic measurement equipment
Test equipment
Service evaluation
Billing systems
www.clare.com
Ordering Information
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.
Pin Diagram
Part #
M-985-01P
M-985-01S
M-985-01T
Special Information Tone Generator
Precise Call Progress and
Description
22-pin plastic DIP
20-pin plastic SOIC
20-pin plastic SOIC,Tape and Reel
M-985-01
1

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m-985-01 Summary of contents

Page 1

... 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. ...

Page 2

... Operating Ambient Temperature V DD Input Voltage on SIGIN V SS Input Voltages (except SIGIN Lead Soldering Temperature 260° C for 5 seconds Note: Exceeding these ratings may permanently damage the M-985-01. Specifications Parameter Operating V DD Conditions Power supply noise Power Current drain ( ...

Page 3

... R = 100 kΩ L Electronic equipment monitoring the OUTn outputs of the M-985-01 can determine the nature of signals pres- ent by measuring their duty cycle. See Mechanical Dimensions for a diagram of a circuit that could be used to permit a microcomputer to directly monitor tones on the telephone line. Much of the character of the progress tones is in their duty cycle or cadence (some- times referred to as interruption rate) ...

Page 4

... M-985-01 Pin Functions Pin Function OUT 1 Active high tri-state output, per Truth Table. OUT 2 Active high tri-state output, per Truth Table. OUT 3 Active high tri-state output, per Truth Table OUT 4 Active high tri-state output, per Truth Table D425 Active high tri-state output, indicates 425 Hz detection. ...

Page 5

... Low Accept 835 885 1328 1722 Use Dial Tone Special Alert Tone Audible Ring Pre-empt Bell High Tone Reorder (Bell Low) Special Special European www.clare.com M-985-01 OUT 4 D425 Strobe High Accept High Reject ...

Page 6

... M-985-01 Signal Timing (See Specifications) Tri-State Timing Typical Application 6 Power-Down Timing www.clare.com Rev. 1 ...

Page 7

... Rev. 1 MECHANICAL DIMENSIONS www.clare.com M-985-01 Tolerances (inches) Metric Approximation (mm) Min Nom Max Min Nom Max .210 5.33 .015 .38 .014 .022 .36 .56 .045 .060 .065 1.1 1.5 1.7 .009 .015 .23 .38 1.065 1.085 1.120 27.1 27.6 28.4 .390 .415 .425 9 ...

Page 8

... Clare’s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice. Specification: DS-M985-01-R1 ©Copyright 2001, Clare, Inc. ...

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