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Clare  Inc.
Clare Inc.

M-984-02S Datasheet Preview

M-984-02S Datasheet

Special Information Tone Detector

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M-984-02S pdf
Features
Detects single-frequency tones used for error
indication and call progress in telephone systems
Provides detection windows for:
400/425 Hz (Call Progress)
950 Hz (Special and error indication)
1400 Hz (Special and error indication)
1800 Hz (Special and error indication)
Separate tri-state outputs for each tone window
Inexpensive 3.58 MHz crystal time base
Auxiliary 3.58 MHz clock output
14-pin DIP package and 16-pin SOIC package
Single supply 3 to 5 volt (low power CMOS)
Wide dynamic range (30 dBm)
Applications
Automatic dialers
Modems
Telecom test equipment
Telephone traffic measurement,
Service evaluation
Billing equipment
Pin Diagram
M-984-02
Special Information Tone Detector
Description
The M-984-02 Special Information Tone Detector is a
monolithic integrated circuit designed to provide reli-
able detection of many common telephone network
status signals. In particular, it detects the signals
known as Special Information Tones (SITs) or error
tones as defined by the CCITT, and single tones often
used as dial tone, audible ringing, and other general
progress indications. The M-984-02 uses CMOS
switched capacitor filters and a crystal time base to
achieve the high stability and accuracy specified. Each
tone detection window has an associated output pin,
which can be placed in a high impedance state for use
with time-share microcomputer bus applications.
In comparison with the earlier M-984, the M-984-02
has wider acceptance bands for SIT tones to facilitate
reception of tape-loop tones, lower power consump-
tion at 5V operation, 3V operation, superior tempera-
ture performance, lower cost, and is available in DIP,
SOIC, and SOIC tape and reel versions.
Ordering Information
Part #
M-984-02P
M-984-02S
M-984-02T
Description
14-pin plastic DIP
16-pin plastic, SOIC
16-pin SOIC, Tape and Reel
Block Diagram
DS-M984-02-R3
www.clare.com
1



Clare  Inc.
Clare Inc.

M-984-02S Datasheet Preview

M-984-02S Datasheet

Special Information Tone Detector

No Preview Available !

M-984-02S pdf
M-984-02
Absolute Maximum Ratings
DC Supply Voltage
7V
Input Voltage on SIGIN
Input Voltage on Any Pin
(except SIGIN)
VSS - 6.5V to VDD +0.3V
VSS - 0.3 to VDD + 0.3V
Storage Temperature Range
-40°C to +150°C
Operating Temperature Range
-40°C to +85°C
Lead Soldering Temperature
260°C for 5 seconds
Note:
Exceeding these ratings may permanently damage the device.
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
Conditions
Operating Conditions
VDD
Power supply noise
-
0.1 - 5 kHz
Power
VREF
Current drain (IDD)
VREF
Impedance
VREF open
-
-
Signal Detection
Frequency Range
-
Level: VDD = 5.0V
Level: VDD = 3.0V
Duration
Bridge Time
-
-
fc = 400 Hz
fc = 950, 1400, 1800 Hz
-
Signal to Noise Ratio
-
Signal Rejection
Frequency Range
-
Level: VDD = 5.0V
Level: VDD = 3.0V
Duration
-
-
-
Outputs
Inputs
Except X358
Dn pins only
EN pin
VOL
VOH
IOZ
VIL
VIH
Pull-up and Pull-
down currents
MODE = VSS
/XRANGE +VSS
MODE2 = VDD
SIGIN pin
PD = VDD
Voltage range
ISINK = -1.0 mA
ISOURCE = 1.0 mA
VO = VDD, VSS
-
VDD = 5V
VDD = 2.7V
VDD = 5V
VDD = 2.7V
-
VDD = 5V
VDD = 2.7V
-
-
Input impedance
f = 500 Hz
Input Spectrum
-
Clock
External clock
connected to
XIN pin
VIL
VIH
Duty cycle
XOUT open
XOUT open
XOUT open
XIN, XOUT with Capacitance
crystal ocs. active Internal res.
-
-
Tri-state Operation
X358 pin
VOL
VOH
Duty cycle
tEN (High Z to Low Z)
tDE (Low Z to High Z)
CL = 20 pF, ISINK = -1.0 mA
CL = 20 pF, ISOURCE = 1.0 mA
CL = 20 pF
CL = 50 pF
RL = 100 K
Unless otherwise noted, specifications hold over VDD - VSS = 2.8V to 5.5V power supply, and TOL -40°C to +85°C.
Notes:
1. See the Detector Frequency Windows table on page 4 for detection/ rejection frequencies.
2 www.clare.com
Min
2.7
-
-
48% of VDD
3.25
Note 1
-30 (24.5 mV)
-33 (17.4 mV)
85
50
-
16
Note 1
-
-
-
-
VDD-0.5
-
-
VDD -2.0
VDD - 0.5
12.5
4
2
12.5
12.5
4
-6.5
80
-
-
VDD - 0.2
40
-
20
-
VDD - 0.5
40
-
-
Max
5.5
20
15
52% of VDD
8.25
Note 1
0 (775 mV)
-3 (173.5 mV)
-
-
15
-
Note 1
-40 (7.8 mV)
-43 (5.5 mV)
50
0.5
-
1
0.5
-
-
50
20
6
100
25
10
VDD
-
28
0.2
-
60
10
-
0.5
-
60
250
250
Units
V
mV p-p
mA
V
k
-
dBm
dBm
ms
ms
ms
dB
-
dBm
dBm
ms
V
V
µA
V
V
V
µA
µA
µA
µA
µA
µA
V
k
kHz
V
V
%
pF
M
V
V
%
ns
ns
Rev. 3


Part Number M-984-02S
Description Special Information Tone Detector
Maker Clare Inc.
Total Page 6 Pages
PDF Download
M-984-02S pdf
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