SLIC Protection
ITU-T Solution
SLIC
+VBAT
-VBAT
220 nF
220 nF
TISP9110LDMR-S
CMF-SDP50A-2
RJ11
e schematic above illustrates the application protection and does not constitute the complete
circuit design. Customers should verify actual device performance in their specic applications.
TISP9110LDMR-S
CMF-SDP50A-2
COPYRIGHT© 2014 • BOURNS, INC. • 7/14 • WAG • e/CPK1128 • “PortNote” is a registered service mark of Bourns, Inc.
“Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries.
Solution Products
PN-DESIGNKIT-39
Design Kit
Asia-Pacific: Tel +886-2 256 241 17
Fax +886-2 256 241 16
Bourns® PortNote® solutions provide protection
recommendations for typical port threats.
For more information, go to:
www.bourns.com
or email: protection@bourns.com
Americas: Tel +1-951 781-5500
Fax +1-951 781-5700
EMEA: Tel +36 88 520 390
Fax +36 88 520 211
Compliance
ITU-T Basic for K.20, K.21, K.45
Alternate Recommendations
Other PortNote® Solutions:
• Negative Battery Voltage SLIC Protection - ITU-T Solution
• Negative Battery Voltage SLIC Protection -
GR-1089-CORE Intra-building Solution
• SLIC Protection - GR-1089-CORE Intra-building Solution
Benefit
is solution provides a high level of protection in
dual voltage ringing SLICs.
Objective
e SLIC (Subscriber Line
Interface Circuit) provides all
the BORSCHT functions such as
battery, ringing and supervision
between the codec and telephone
handset. is PortNote® solution
protects SLIC interfaces against
surge and power contact threats.
Solution
1 yristor: TISP9110LDMR-S
1 PTC: CMF-SDP50A-2
