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Clare  Inc.
Clare Inc.


M-985-01S

Precise Call Progress and Special Information Tone Generator


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M-985-01S pdf
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



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M-985-01S pdf
M-985-01
Absolute Maximum Ratings
Storage Temperature
-40 to 150°C
Operating Ambient Temperature
-40 to 85°C
VDD
Input Voltage on SIGIN
Input Voltages (except SIGIN)
Lead Soldering Temperature
7V
VSS - 6.5 to VDD + 0.3V
VSS - 0.3 to VDD + 0.3 V
260° C for 5 seconds
Note:
Exceeding these ratings may permanently damage the M-985-01.
Absolute Maximum Ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at these or
any other conditions beyond those indicated in the opera-
tional sections of this data sheet is not implied. Exposure of
the device to the absolute maximum ratings for an extend-
ed period may degrade the device and effect its reliability.
Specifications
Parameter
Operating
Conditions
VDD
Power supply noise
Power
VREF
Current drain (IDD)
VREF
Impedance
Signal
Frequency range
Detection,
Level: VDD = 5.0v
all tones except
SIT tones.
Level: VDD = 3.0V
Duration (tDD)
Signal drop out bridging time (tBB)
Level skew between adjacent
inband signals
High level to low level signal for
detection of both (tIL)
Time to output (tDO)
Time from OUT n to STROBE (tDS)
Signal Detection, Frequency Range
940, 1400, 1800 Level: VDD = 5.0V
Hz
Level: VDD = 3.0V
Duration
Signal drop out bridging time (tBB)
Signal to noise ratio
Signal Rejection, Frequency range
all tones except Level: VDD = 5.0V
SIT tones.
Level: VDD = 3.0V
Interval duration (tID)
Time to end of output (tIO)
Conditions
-
0.1 - 5 kHz
-
-
-
in-band signal
XRANGE = open
XRANGE = VSS
XRANGE = open
XRANGE = VSS
-
-
for detection of both
High = 0 dBm (775 mV)
Low = -30 dBm (24.5 mV)
SIGIN -24 dBm
SIGIN < -24 dBm
-
-
XRANGE = open
XRANGE = VSS
XRANGE = open
XRANGE = VSS
-
-
-
-
XRANGE = open
XRANGE = VSS
XRANGE = open
XRANGE = VSS
-
-
Min
2.7
-
-
48% of VDD
3.25
-1
-30 (24.5 mV)
-40 (7.8 mV)
-33 (17.4 mV)
-43 (5.5 mV)
200
-
-
1
-
-
-
-
-30 (24.5 mV)
-40 (7.8 mV)
-33 (17.4 mV)
-43 (5.5 mV)
50
-
16
-6
-
-
-
-
160
-
Max
5.5
20
15
52% of VDD
8.25
+1
0 (775 mV)
-10 (245 mV)
-3 (549 mV)
-13 (173.5 mV)
-
20
6
-
200
240
10
-
0 (775 mV)
-10 (245 mv)
-3 (549 mV)
-13 (173.5 mV)
-
15
-
+6
-50 (2.5 mV)
-60 (0.8 mv)
-53 (1.7 mV)
-65 (.55 mV)
-
200
Units
V
mV p-p
mA
V
k
% of fo
dBm
dBm
dBm
dBm
ms
ms
dB
s
ms
ms
µs
-
dBm
dBm
dBm
dBm
ms
ms
dB
% of f0
dBm
dBm
dBm
dBm
ms
ms
Notes
-
-
-
-
1
2
-
1
-
2
www.clare.com
Rev. 1



Part Number M-985-01S
Description Precise Call Progress and Special Information Tone Generator
Maker Clare  Inc. - Clare Inc.
Total Page 8 Pages
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