SR3.3 Datasheet | Semtechoration

Description Rail Clamps are surge rated diode arrays designed to protect high speed data interfaces. The SR series has been specifically designed to protect sensitive ponents which are connected to data and transmission lines from overvoltage caused by ESD (electrostatic discharge), EFT (electrical fast transients), and tertiary lightning. The unique design of the SR series devices incorporates four surge rated, low capacitance steering diodes and a TVS diode in a single package. The TVS diode is constructed using Semtech’s proprietary low voltage EPD technology for superior electrical characteristics at 3.3 volts. During transient conditions, the steering diodes direct the transient to either the positive side of the power supply line or to ground. The internal TVS diode prevents over-voltage on the power line, protecting any downstream ponents. The low capacitance array configuration allows the user to protect two high-speed data or transmission lines. The low inductance construction minimizes voltage overshoot during high current surges. Rail Clamp Low Capacitance TVS Diode Array PRELIMINARY Features ! ESD protection to IEC 61000-4-2, Level 4 ! Array of surge rated diodes with internal ! ! ! ! ! ! ! ! ! EPD TVS diode Protects two I/O lines Low capacitance (<10p F) for high-speed interfaces Low leakage current (< 1µA) Low operating voltage: 3.3V Solid-state technology Mechanical Characteristics JEDEC SOT-143 package Molding pound flammability rating: UL 94V-0 Marking : R3.3 Packaging : Tape and Reel per EIA 481 Applications ! ! ! ! ! ! Data and I/O lines Sensitive Analog Inputs Video Line Protection Portable Electronics Microcontroller Input Protection WAN/LAN Equipment Circuit Diagram Pin 4 Schematic & PIN Configuration 4 1 Pin 2 Pin 3 Pin 1 SOT-143 (Top View) Revision 9/2000 1 .semtech. PROTECTION PRODUCTS Absolute Maximum Rating R ating Peak Pulse Power (tp = 8/20µs) Peak Pulse Current (tp = 8/20µs) Peak Forward Voltage (IF = 1A,...