CPC7581
Table 7. Electrical Specifications, Protection Circuitry
PARAMETER
CONDITIONS
SYMBOL
MIN
TYP
MAX
UNITS
Parameters Related to Diodes
(in Diode Bridge)
Voltage Drop @ Continuous
Current (50/60 Hz)
Voltage Drop @ Surge
Current
Apply +/-dc current limit of break
switches
Apply +/-dynamic current limit of
break switches
Forward
Voltage
Forward
Voltage
-
-
2.1
5
3
-
V
V
Parameters Related to
Protection SCR1
Surge Current
-
-
-
-
-
ITRIG
IHOLD
ITRIG
IHOLD
-
-
Von
-
-
-
-
-
-
60
100
35
70
-
-
-3
-5
*
-
-
-
A
mA
mA
mA
mA
V
µA
V
V
Trigger Current (+25˚C)
Hold Current (+25˚C)
Trigger Current (+85˚C)
Hold Current (+85˚C)
Gate Trigger Voltage
Reverse Leakage Current
ON State Voltage1
60
BAT - 4
-
-
-
-
Trigger Current
VBAT
0.5A t = 0.5 ms
2.0A t = 0.5 ms
V
VBAT - 2
1.0
-
-
1 Only for the CPC7581BA.
* Passes GR1089 & ITU-T K.20 with appropriate secondary protection in place.
Table 8. Truth Table
Input
TSD
Tip Break
Switch
Ring
Break
Switch
Ringing
Return
Switch
Ring
Switch
State
0V
5V
Don’t
Care
5V/Float1
5V/Float1
0V2
On
Off
Off
On
Off
Off
Off
On
Off
Off
On
Off
Idle/Talk
Ringing
All Off
1 Thermal shutdown mechanism is active with TSD floating or equal to 5V and cannot be disabled.
2 Forcing TSD to ground overrides the logic input pins and forces an all off state.
Rev. 2
6
www.clare.com
CLARE [ CLARE ]
