CPC7582
1.8 Protection Circuitry Electrical Specifications
Parameter
Conditions
Symbol
Minimum
Typical
Maximum
Unit
Parameters Related to the Diodes in the Diode Bridge
Voltage drop at
Apply dc current limit of break
continuous current
switches
Forward
Voltage
-
-
2.1
5
3
-
(50/60 Hz)
V
A
Voltage drop at surge Apply dynamic current limit of
break switches
Forward
Voltage
current
Parameters Related to the Protection SCR
Surge current
Trigger current
-
-
-
-
-
*
-
60 (CPC7582xA, xB)
70 (CPC7582xC)
T=+25°C
I
TRIG
35 (CPC7582xA, xB)
40 (CPC7582xC)
T=+85°C
T=+25°C
T=+85°C
**
-
-
-
-
-
mA
100 (CPC7582xA, xB)
135 (CPC7582xC)
I
Hold current
HOLD
60 (CPC7582xA, xB) 70 (CPC7582xA, xB)
115 (CPC7582xC)
110 (CPC7582xC)
V
or
TBAT
I
= I
V
-4
V
-2
Gate trigger voltage
-
-
V
μA
V
GATE TRIGGER
BAT
BAT
V
I
RBAT
V
= -48 V
Reverse leakage current
-
1.0
BAT
VBAT
V
or
TBAT
0.5 A, t = 0.5 μs
2.0 A, t = 0.5 μs
-
-
-3
-
-
V
RBAT
On-state voltage
V
or
TBAT
-5
V
V
RBAT
*Passes GR1089 and ITU-T K.20 with appropriate secondary protection in place.
**V must be capable of sourcing I for the internal SCR to activate.
BAT
TRIGGER
1.9 CPC7582xA/B Truth Table
Break
Switches
Ringing
Switches
Test
Switches
IN
IN
T
SD
State
LATCH
RINGING
TEST
Talk
Test
0
0
1
1
X
X
0
1
0
1
X
X
On
Off
Off
Off
Off
Off
Off
On
Off
Off
0
1 or
Ringing
All Off
On
1
Floating
Off
Latched
1
Unchanged
Off
2
All off
X
Off
Off
0
1
If T is tied high, thermal shutdown is disabled. If T is left floating, the thermal shutdown mechanism functions normally.
SD
SD
2
Forcing T to ground overrides the logic input pins and forces an all off state.
SD
10
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