M-985-01S Datasheet PDF - Clare Inc.

www.Datasheet-PDF.com

M-985-01S
Clare Inc.

Part Number M-985-01S
Description Precise Call Progress and Special Information Tone Generator
Page 8 Pages


M-985-01S datasheet pdf
Download PDF
M-985-01S pdf
View PDF for Mobile


No Preview Available !

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



No Preview Available !

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



No Preview Available !

M-985-01
Specifications (Continued)
Parameter
Conditions
Min
Max Units Notes
Signal Rejection, Frequency Range
950, 1400, 1800 Level: VDD = 5.0V
Hz
Level: VDD = 3.0V
Duration
- - - -2
XRANGE = open
-
-40 (7.8 mV) dBm
-
XRANGE = VSS
-
-50 (2.5 mV) dBm
-
XRANGE= open
-
-43 (5.5 mV) dBm
-
XRANGE= VSS
-
-
-53 (1.7 mV) dBm
-
50 ms - -
Outputs
Inputs
OUT n,
STROBE pins
OUT n pins
EN, OE,
XRANGE, MODE,
PD pins
VOL
VOH
IOZ
VIL
VIH
Pull-up and
MODE = VSS
Pull-down currents
/XRANGE = VSS
MODE2 = VDD
PD pin
SIGIN pin
PD = VDD
Pull-down current
Voltage range
Input impedance
ISINK = -1mA
ISOURCE = 1mA
VO=VDD, VSS
-
VDD = 5V
VDD = 2.7V
VDD = 5V
VDD = 2.7V
-
VDD = 5V
VDD = 2.7V
-
PD = VDD
-
f=500 Hz
-
VDD -0.5
-
-
VDD - 2.0
VDD - 0.5
12.5
4
2
12.5
12.5
4
12.5
-6.5
80
0.5 V -
- V-
1 µA -
0.5 V -
- V-
- V-
50 µA -
20 µA -
6 µA -
100 µA -
25 µA -
10 µA -
50 µA -
VDD V -
- k-
Input spectrum
-
- 28 kHz -
Clock
External clock VIL
connected to XIN VIH
pin Duty cycle
XOUT open
XOUT open
XOUT open
-
VDD-0.2
40
0.2 V -
- V-
60 % -
XIN, XOUT with Capacitance
crystal osc. active Internal resistance
-
-
- 10 pF -
20 - M-
Tri-state
Operation
X358 pin
Power up (tPU)
VOL
VOH
Duty cycle
tEN (High Z to Low Z)
tDE (Low Z to High Z)
PD hi to lo
CL = 20 pF,
ISINK = -1mA
CL = 20 pF,
ISOURCE = 1mA
CL = 20 pF
CL = 50 pF,
RL = 100 k
-
-
VDD - 0.2
40
-
-
30 ms -
0.2 V -
- V-
60 % -
250 ns -
250 ns
Unless otherwise noted, VDD - VSS = 5V, Ta = 25°C, PD at logical low state, and XRANGE at a logical high state. Power levels are in dBm referenced to 600 ohm. DC voltages are referenced to VSS.
Notes:
1. Per tone.
2. See Table 4 for detection/rejection frequencies.
Call Progress Tone Detection
Call progress tones are audible tones sent from switch-
ing systems to calling parties to show the status of calls.
Calling parties can identify the success of a call placed
by what is heard after dialing. The type of tone used and
its timing vary from system to system, and though
intended for human ears these signals can provide
valuable information for automated calling systems.
The M-985-01 contains five signal detectors sensitive to
the frequencies often used for these progress tones.
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). This information,
coupled with level and frequency indication from the M-
985-01, can be used to decide what progress tones
have been encountered.
Rev. 1 www.clare.com
3



No Preview Available !

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.
EN Active high enabled, when low drives STROBE low.
OE Active high input. When low tri-states OUT n pins.
SIGIN Analog signal input (internally capacitive coupled).
STROBE Active high output, indicates valid OUT n or D425
VDD Most positive power supply input pin.
VREF Internally generated mid-power supply voltage (output)
VSS
X358
Most negative power supply input pin.
Buffered oscillator output (3.58 MHz).
XIN Crystal oscillator or digital clock input.
XOUT
Crystal oscillator output. Used only with a crystal. Use
X358 when clock output signal is required.
XRANGE Active low input. Adds 10 dB of gain to input stage.
MODE
PD
Selects 400/620 Hz detector frequency, 400 Hz when
connected to VSS, 620 Hz when open.
Power down operation, logic high inhibits internal
clock. Internal pulldown resistor.
MODE2 Tie high (VDD) for normal operation. Tie low or leave
open to emulate M-982 operation.
For example, dial tones shown in absolute Maximum
Ratings Table on page 3, are usually “on” continuously
and last until the first dial digit is received by the switch-
ing system. Line Busy, on the other hand, is turned off
and on at a rate of 1 Hz with a 50% duty cycle, or an
interruption rate of 60 times per minute (60 IPM). The
tones can be distinguished in this way. It should be
noted that while such techniques will usually be effec-
tive, there are some circumstances in which the M-985-
01 cannot be accurately used. Examples include
situations where ringback tone may be short or not
even encountered. Ringback may be provided at ring-
ing voltage frequency (20 or 30 Hz) with some harmon-
ics and may not fall in the detect range, and speech or
other strong noise may obscure tones making cadence
measurement difficult.
Standards exist and should be consulted for your par-
ticular application. In North America AT&Ts “Notes on
the Network” or EIA’s RS-464 PBX standard should be
reviewed.
In Europe tone plans may vary with locale, in which
case the CEPT administration in each country must
be consulted. Outside these areas, national PTT
organizations can provide information on the systems
within their borders.
Truth Table
Signal Present (fo)
350 Hz
400 Hz (Note 1)
425 Hz
440 Hz
480 Hz
620 Hz (Note 2)
950 Hz
1400 Hz
1800 Hz
350 & 440 Hz
350 & 480 Hz
350 & 620 Hz (Note 2)
440 & 480 Hz
440 & 620 Hz (Note 2)
480 & 620 Hz (Note 2)
Invalid Tone Combination
Other (no detect)
Any
Mode
X
0
X
X
X
1
X
X
X
X
X
1/open
X
X
X
X
X
X
OUT 1
1
0
X
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
OUT 2
0
1
X
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
OUT 3
0
0
X
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
OUT 4
0
0
X
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
D425
X
X
1
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
Strobe
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
PD
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
OE EN
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
1X
4
www.clare.com
Rev. 1



M-985-01S datasheet pdf
Download PDF
M-985-01S pdf
View PDF for Mobile


Related : Start with M-985-01 Part Numbers by
M-985-01 Precise Call Progress and Special Information Tone Generator M-985-01
Clare Inc.
M-985-01 pdf
M-985-01P Precise Call Progress and Special Information Tone Generator M-985-01P
Clare Inc.
M-985-01P pdf
M-985-01S Precise Call Progress and Special Information Tone Generator M-985-01S
Clare Inc.
M-985-01S pdf
M-985-01T Precise Call Progress and Special Information Tone Generator M-985-01T
Clare Inc.
M-985-01T pdf

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Contact