MH88437-P
Advance Information
.
Absolute Maximum Ratings* -
All voltages are with respect to AGND unless otherwise specified.
Parameter
1
2
3
4
5
6
7
DC Supply Voltage
Storage Temperature
DC Loop Voltage
Transient loop voltage
Ringing Voltage
Loop Current
Ring Trip Current
Sym
V
CC
T
S
V
TR
V
TR
V
R
I
LOOP
I
TRIP
Min
-0.3
-55
-110
Max
6
+125
+110
300
150
60
90
180
Units
V
˚C
V
V
Vrms
mA
mA
mArms
1ms On hook
VBAT = -56V
CL=0 V
TIP-RING
≤40V
CL=1
250ms 10% duty cycle or
500ms single shot
Comments
*
Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Recommended Operating Conditions
Parameter
1
2
3
DC Supply Voltages
Operating Temperatures
Industrial Temperature
Ringing Voltage
Sym
V
CC
T
OP
V
R
Min
4.75
0
-40
Typ
‡
5.0
25
75
Max
5.25
70
+85
90
Units
V
Test Conditions
˚C
Vrms
VBat = -48V
‡ Typical figures are at 25˚C with nominal +5V supply and are for design aid only
Loop Electrical Characteristics
†
Characteristics
1
Ringing Voltage
No Detect
Detect
2
3
4
Ringing Frequency
Operating Loop Current
Off-Hook DC Voltage
6.0
6.0
7.8
5
6
7
8
Leakage Current
(Tip or Ring to AGND)
Leakage Current on-hook
(Tip to Ring)
Dial Pulse Detection
ON
OFF
0
0
5
9
18
+1
+1
10
7
10
20
+2
+2
16
V
V
V
µA
mA
µΑ
ms
ms
V
Sym
VR
7
14
15
15
68
60
80
Vrms
Vrms
Hz
mA
mA
CL=0 V
TIP-RING
≤40V
CL=1 (see Note 1)
Externally Adjustable
I
LOOP
=15mA)
I
LOOP
=20mA) (Note 3)
I
LOOP=
26mA)
where R2 = 110kΩ
100V DC (see Note 2)
1000V AC
V
BAT
(= -50V)
V
BAT
(= -100V)
Dial pulse delay
Voltage across tip and
ring
Min
Typ
‡
Max
Units
Test Conditions
Externally Adjustable
Loop Condition Detect Threshold
Off-Hook
† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C with nominal + 5V supplies and are for design aid only.
Note 1: Low Loop current operation depends on value of resistor connected between V
Loop
1 and V
Loop
2.
Note 2: This is equivalent to 10MΩ leakage Tip/Ring to Ground.
Note 3. Refer to EIA/TIA 464 Section 4.1.1.4.4
8
MITEL [ MITEL NETWORKS CORPORATION ]
