CPC7581
Package Pinout
Pin
1
Name
FGND
TBAT
TLINE
NC
Function
CPC7581
Fault ground
1
16
SCR
and
TRIP
CKT
FGND
TBAT
VBAT
RBAT
RLINE
2
Connect to TIP on SLIC side
Connect to TIP on line side
No Connect
2
3
4
15
14
13
3
SW1
4
TLINE
SW2
SW4
5
6
NC
TRING
No Connect
Connect to return ground for ringing
generator
SW3
NC
NC
5
12
11
RRING
NC
TRING
VDD
7
8
VDD
+ 5V Supply
6
7
8
TSD
Temperature shutdown pin. Can be
used as a logic level input or output.
See Tables 5, 6 and 8 for more
details. As an output, will read
+5V when device is in its operational
mode and 0V in the thermal
shutdown mode.
LATCH
INPUT
10
9
Temperature
Shutdown
TSD
DGND
9
DGND
INPUT
LATCH
Digital Ground
10
11
Logic level input switch control
* Only the CPC7581BA contains the protection SCR.
Data latch control, active high,
transparent low
12
13
14
15
16
RRING
NC
Connect to ringing generator
No Connect
RLINE
RBAT
VBAT
Connect to RING on line side
Connect to RING on SLIC side
Battery voltage. Reference for
protection circuit
Rev. 2
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