SLIC Protection 4 kV ITU-T Solution Solution Products TISP9110MDMR-S CMF-RL55-10-0 Objective Compliance The SLIC (Subscriber Line Interface Circuit) provides all the BORSCHT functions such as battery, ringing and supervision between the codec and telephone handset. This PortNote® solution provides protection recommendations for SLIC interfaces against 4 kV 10/700 µs surge and power contact threats. ITU-T Basic for K.20, K.21, K.45 • Increased surge withstand to 4 kV 10/700 µs Solution Benefit 1 Thyristor: TISP9110MDMR-S 2 CPTC Resettable Fuses: CMF-RL55-10-0 This solution provides a 4 kV 10/700 µs level of protection in dual voltage ringing SLICs. +VBAT 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 220 nF CMF-RL55-10-0 TISP9110MDMR-S SLIC RJ11 Design Kit 220 nF CMF-RL55-10-0 -VBAT The schematic above illustrates the application protection and does not constitute the complete circuit design. Customers should verify actual device performance in their specific applications. PN-DESIGNKIT-47 Americas: Tel +1-951 781-5500 EMEA: Tel +36 88 520 390 Fax +36 88 520 211 Fax +1-951 781-5700 Asia-Pacific: Tel +886-2 256 241 17 Fax +886-2 256 241 16 COPYRIGHT© 2014 • BOURNS, INC. • 6/14 • PSG • 3M/K1438 • “PortNote” is a registered service mark of Bourns, Inc. “Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries. Bourns® PortNote® solutions provide protection recommendations for typical port threats. For more information, go to: www.bourns.com or email: [email protected]