MH88612K
Characteristics
1
Supply Current
V
DD
V
EE
V
Bat
2
3
4
Power Consumption
Constant Current Line Feed
Adjustable Loop Current Range
Operating Loop Resistance
Ring Ground Over-Current
I
DD
I
EE
I
BAT
P
C
I
Loop
I
Loop
23
18
5.8
-2.6
210
1410
25
27
30
500
mA
mA
µA
mW
mW
mA
mA
Sym
Min
Typ
†
Max
Preliminary Information
DC Electrical Characteristics* -
Voltages are with respect to GNDA unless otherwise stated.
Units
Test Conditions
PD = Logic high
Standby
Active
V
Ref
= GNDA, V
Bat
= -48V
Adjustable with Ext. V
Ref
Input, V
Bat
= -48V
V
Bat
= -28V @ I
Loop
=
18mA, R
Loop
includes
telephone set
5
R
Loop
1200
Ω
6
Protection
Off-Hook Detect
Output Low Voltage (On-hook)
Output High Voltage (Off-hook)
Off- Hook Detect
Output Low Current (on-hook)
Input High Current. (off-Hook)
RC1,RC2, PD Control Inputs
Input Low Volt. (no activation)
Input High Volt. (activation)
RC1, RC2, PD control Inputs
Input Low Current (no
activation)
Input high current (activation)
40
mA
7
Active high logic
V
OL
V
OH
0
2.7
0.4
5.25
V
V
8
I
OL
I
OH
V
IL
V
IH
I
IL
I
IH
8
-400
0.7
2.0
-50
50
mA
µA
Active high logic
V
V
µA
µA
9
10
* DC Electrical Characteristics are over recommended operating supply voltages.
† Typical figures are at 25°C with nominal ±5V supplies and are for design aid only.
2-126
MITEL [ MITEL NETWORKS CORPORATION ]
