485ELC

05039 C - TVS Capactiance - pF Only One Name Means ProTek’Tion™ HIGH SPEED ETHERNET DATA LINE PROTECTOR 485ELC 485ELC DESCRIPTION The 485ELC is low capacitance, two-stage transient voltage protector the provides primary and secondary protection against lightning, inductive switching and electrostatic discharge (ESD) transient threats. The first stage diverts the transient current through the ground terminal return path and the second stage clamps the voltage to a safe level without interruption of service. The 485ELC is designed to protect data lines, transmission lines, timing and control interface circuits from commonmode (line-to-ground) or differential (line-line) transients. Terminals 1 & 2 and 3 & 4 are designed as line pairs. A transient voltage suppressor is connected across each line pair for differential mode protection. Capacitance over the operating voltage range is important. If capacitance is non-linear, distortion, loss of data or access to the I/O port can occur (See Figure 1). APPLICATIONS Ethernet & Catagory 5 Systems RS-485 Serial Communication Lines ISDN Equipment/Systems Video Transmission Systems Smoke Detector & Fire Alarm Systems FEATURES Compatible with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV Compatible with IEC 61000-4-4 (EFT): 40A - 5/50ns Compatible with IEC 61000-4-5 (Surge): 95A, 8/20µs, Level 4 (Line- Gnd) & 48A, Level 4 (Line-Line) Low Capacitance - 25pF Designed for EIA Standard RS-485 Data Lines Pe...