m-985-01 Clare, Inc., m-985-01 Datasheet - Page 3

• Manufacturer Part Number: m-985-01
• Description: Precise Call Progress And Special Information Tone Generator
• Manufacturer: Clare, Inc.

Specifications (Continued)
Rev. 1
Signal Rejection, Frequency Range
Outputs
Inputs
Clock
Tri-state
950, 1400, 1800 Level: V
Hz
Operation
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.
Unless otherwise noted, V
Notes:
1. Per tone.
2. See Table 4 for detection/rejection frequencies.
Level: V
Duration
OUT n,
STROBE pins
OUT n pins
EN, OE,
XRANGE, MODE, V
PD pins
Pull-up and
Pull-down currents
PD pin
SIGIN pin
External clock
connected to XIN V
pin
XIN, XOUT with
crystal osc. active Internal resistance
X358 pin
t
t
DD
EN
DE
- V
(High Z to Low Z)
(Low Z to High Z)
SS
= 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 V
DD
DD
= 5.0V
= 3.0V
Parameter
V
V
I
V
MODE = V
/XRANGE = V
MODE2 = V
PD = V
Pull-down current
Voltage range
Input impedance
Input spectrum
V
Duty cycle
Capacitance
Power up (t
V
V
Duty cycle
OZ
OL
OH
IL
IH
IL
IH
OL
OH
DD
SS
DD
PU
SS
)
XRANGE = open
XRANGE= open
XRANGE = V
I
XRANGE= V
I
www.clare.com
SOURCE
R
I
SOURCE
I
V
SINK
XOUT open
XOUT open
XOUT open
Conditions
SINK
V
V
V
C
C
C
PD hi to lo
C
L
O
PD = V
V
V
V
f=500 Hz
L
L
L
DD
DD
DD
L
=V
DD
DD
DD
= 100 kΩ
= 20 pF,
= 20 pF,
= 50 pF,
= 20 pF
= -1mA
= -1mA
= 2.7V
= 2.7V
= 2.7V
DD
-
-
-
-
-
-
-
-
-
= 5V
= 5V
= 5V
= 1mA
= 1mA
, V
DD
SS
SS
SS
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.
V
V
V
V
V
DD
DD
DD
DD
DD
12.5
12.5
12.5
12.5
Min
-6.5
50
80
40
20
40
4
2
4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- 2.0
- 0.5
-0.2
- 0.2
-0.5
-40 (7.8 mV)
-50 (2.5 mV)
-43 (5.5 mV)
-53 (1.7 mV)
Max
100
V
250
250
ms
0.5
0.5
0.2
0.2
50
20
25
10
50
28
60
10
30
60
1
6
-
-
-
-
-
-
-
-
DD
Units
dBm
dBm
dBm
dBm
MΩ
kHz
kΩ
ms
µA
µA
µA
µA
µA
µA
µA
µA
pF
ns
ns
%
%
V
V
V
V
V
V
V
V
V
V
-
-
M-985-01
SS
.
Notes
2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3