RJ11 Fax/Modem (FXO) Solution Products TISP4350T3BJR-S Objective Compliance In telecommunications, foreign exchange office (FXO) designates a telephone signaling interface that receives plain old telephone service (POTS). This solution protects those interfaces against surge and power contact threats. ITU-T K.21, IEC 60950, UL 60950 and TIA-968A Solution Benefit 1 Thyristor: TISP4350T3BJR-S 1 Telecom Fuse: B1250T 1 Diode Bridge: CD2320-B1600 This solution provides a high level of protection within a small amount of PCB area. Alternate Recommendations The TISP4310T3 should be considered for some “B” type ringers or for ITU-T Enhanced testing; consult with your local Bourns representative. B1250T Solid-State Hook Switch CD2320-B1600 B1250T CD2320-B1600 Modem DAA RJ11 Design Kit TISP4350T3BJR-S 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 8 Americas: Tel +1-951 781-5500 Fax +1-951 781-5700 Europe: Tel +41-(0)41 768 55 55 Asia-Pacific: Tel +886-2 256 241 17 Fax +41-(0)41 768 55 10 Fax +886-2 256 241 16 COPYRIGHT© 2011 • BOURNS, INC. • 8/10 • e/CPK1021 • “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]