RS-485 Serial Port - ESD / EFT / Surge Protection Solution Products TBU-CA065-300-WH Objective Compliance RS-485 (TIA/EIA-485) is a balanced data transmission scheme that uses voltage levels from -7 V to +12 V (max.) at data rates up to 10 Mbps. This solution provides protection against ESD, EFT, power and surge faults. IEC 61000-4-2 ESD Level 4 (8 kV / 15 kV) IEC 61000-4-4 EFT IEC 61000-4-5 Surge / Lightning SMBJ6.5A and SMBJ12A TVS Diodes with MF-RM012/240 Multifuse® PPTC Resettable Fuse Solution 2 TBU® High-Speed Protectors: TBU-CA065-300-WH 2 MOVs: MOV-10D201K 1 TVS Diode Array: CDSOT23-SM712 MOV-10D201K Alternate Recommendations Benefit This solution provides excellent protection for both indoor and outdoor applications. It also protects against 28 VRMS and 120 VRMS power cross condition. TBU-CA065-300-WH VCC MOV-10D201K CDSOT23-SM712 RS485 CDSOT23-SM712 TBU-CA065-300-WH Design Kit MOV-10D201K 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-22 Americas: Tel +1-951 781-5500 Fax +1-951 781-5700 EMEA: Tel +41-(0)41 768 55 55 Fax +41-(0)41 768 55 10 Asia-Pacific: Tel +886-2 256 241 17 Fax +886-2 256 241 16 COPYRIGHT© 2014 • BOURNS, INC. • 2/14 • e/K1410 • “PortNote” is a registered service mark of Bourns, Inc. “Bourns”, “TBU” and “Multifuse” are registered trademarks 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]