RClamp0502A RailClamp®®®®® Low Capacitance TVS Array ®®®®® PROTECTION PRODUCTS - RailClamp Description Features The RailClamp® series consists of ultra low capacitance (cid:139) Transient protection for high-speed data lines to TVS arrays designed to protect high speed data inter- IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) faces. This series has been specifically designed to IEC 61000-4-4 (EFT) 40A (5/50ns) protect sensitive components which are connected to (cid:139) Flow through design for ease of layout for high high-speed data and transmission lines from overvoltage speed data line application caused by ESD (electrostatic discharge), CDE (Cable (cid:139) Protects up to two I/O lines & power line Discharge Events), and EFT (electrical fast transients). (cid:139) Low capacitance (<0.9pF) for high-speed interfaces They are designed for use in applications where board (cid:139) Ultra-small package requires less than 2.9mm2 of space is at a premium. Each device requires less than PCB area 2.9mm2 of PCB area and will protect two high speed (cid:139) Low leakage current and clamping voltage data lines. (cid:139) Low operating voltage: 5.0V The monolithic design incorporates surge rated, low (cid:139) Solid-state silicon-avalanche technology capacitance steering diodes and a TVS diode in a single Mechanical Characteristics package. Each line has a typical capacitance of 0.9pF to ground and 0.3pF between lines. The capacitance of (cid:139) SC-89 (SOT-666) package each line is well matched for consistant signal balance. (cid:139) RoHS/WEEE Compliant Signal integrity is further preserved with the flow through (cid:139) Lead Finish: matte tin design. A connection to the TVS is provided for protec- (cid:139) Molding compound flammability rating: UL 94V-0 tion of external voltage busses, such as those found in (cid:139) Marking: A USB applications. This device is optimized for ESD (cid:139) Packaging: Tape and Reel protection of portable electronics. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Applications Level 4 (±15kV air, ±8kV contact discharge). (cid:139) USB 2.0 High Speed The RClamp0502A is in a 6-pin, RoHS/WEEE compli- (cid:139) 10/100/1000 Ethernet Ports ant, SC-89 (SOT-666) package. It measures 1.6 x 1.6 x 0.6mm. The leads are finished with lead-free matte (cid:139) High-Definition Multimedia Interface (HDMI) tin. The small package makes it ideal for use in por- (cid:139) Digital Visual Interface (DVI) table electronics such as cell phones, laptops, and (cid:139) Monitors and Flat Panel Displays digital still cameras. (cid:139) Video Graphics Cards (cid:139) IEEE 1394 Firewire Ports High Speed Circuit Diagram Schematic & PIN Configuration Pin 5 1 6 Pin 3 & 4 Pin 1 & 6 2 5 3 4 Pin 2 SC-89 6L (Top View) Revision 06/28/2008 1 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Absolute Maximum Rating Rating Symbol Value Units PeakPulsePower(tp =8/20μs) P 50 Watts pk PeakPulseCurrent (tp =8/20μs) I 3 A PP ESDperIEC61000-4-2(Air) 1 V ±20 kV ESD ESDperIEC61000-4-2(Contact) ±15 Operating Temperature T -55to+125 °C J StorageTemperature T -55to+150 °C STG Note 1: Between any I/O and GND Electrical Characteristics (T=25oC) Parameter Symbol Conditions Minimum Typical Maximum Units ReverseStand-Off Voltage V Between I/O linestoGnd or 5 V RWM I/O toI/O ReverseBreakdown Voltage V I = 1mA 6 V BR t Between I/O linestoGnd ReverseLeakageCurrent I V = 5V, T=25°C 1 μA R RWM Between I/O linestoGnd or I/O toI/O Clamping Voltage V I = 1A, tp = 8/20μs 14 V C PP Between I/O linestoGnd Clamping Voltage V I = 3A, tp = 8/20μs 16 V C PP Between I/O toGnd Clamping Voltage V I = 3A, tp = 8/20μs 18 V C PP Between I/O toI/O V = 0V, f = 1MHz 0.9 pF Junction Capacitance C R j Between I/O toGnd V = 0V, f = 1MHz 0.3 0.7 pF Junction Capacitance C R j Between I/O toI/O © 2008 Semtech Corp. 2 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 10 110 100 W) 90 wer - P (kPP 1 Power or IPP 678000 k Pulse Po 0.1 % of Rated 345000 a e 20 P 10 0 0.01 0 25 50 75 100 125 150 0.1 1 10 100 1000 Ambient Temperature - T (oC) Pulse Duration - tp (µs) A Clamping Voltage vs. Peak Pulse Current Clamping Voltage vs. Peak Pulse Current I/O to Gnd - Pin 1, 3, 4, 6 to Pin 2 I/O to I/O 16 20 14 mping Voltage - V (V)C 110268 mping Voltage - V (V)C 1105 Cla 4 PWaraavmefeotremrs: Cla 5 PWaraavmefeotremrs: tr = 8µs tr = 8µs 2 td = 20µs td = 20µs 0 0 0 1 2 3 4 0 1 2 3 4 Peak Pulse Current - IPP (A) Peak Pulse Current - Ipp (A) Normalized Capacitance vs. Reverse Voltage Normalized Capacitance vs. Reverse Voltage I/O to Gnd - Pin 1, 3, 4, or 6 to Pin 2 I/O to I/O 1.2 1.4 f = 1 MHz 1.2 Cj Cj 1 Capacitance - 0.81 Capacitance - 0.8 ed 0.6 d 0.6 z e Normali 0.4 ormaliz 0.4 N 0.2 f = 1 MHz 0 0.2 0 1 2 3 4 5 0 1 2 3 4 5 Reverse Voltage - VR (V) Reverse Voltage - VR (V) © 2008 Semtech Corp. 3 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Typical Characteristics Insertion Loss S21 (I/O to I/O) Insertion Loss S21 (I/O to Gnd) CH1 S21 LOG 6 dB / REF 0 dB CH1 S21 LOG 6 dB / REF 0 dB 1: .03430 dB 1: .00460 dB 900 MHz 900 MHz 2: .07870 dB 2: .02010 dB 1.8 GHz 1.8 GHz 3: .28040 dB 3: -.08180 dB 3 2 .5 GHz 3 2 .5 GHz 0 dB 0 dB 1 2 1 2 -6 dB -6 dB -12 dB -12 dB -18 dB -18 dB -24 dB -24 dB -30 dB -30 dB -36 dB -36 dB 1 10 100 1 3 1 10 100 1 3 MHz MHz MHz GHz GHz MHz MHz MHz GHz GHz START . 030 MHz STOP 3 000. 0000 00 MHz START . 030 MHz STOP 3 000. 0000 00 MHz ESD Response (4kV Contact per IEC 61000-4-2) ESD Response (8kV Contact per IEC 61000-4-2) Note: Data is taken with a 10x attenuator Note: Data is taken with a 10x attenuator © 2008 Semtech Corp. 4 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Applications Information Figure 1. Protection of Two Data Lines Device Connection Options for Protection of Two and One Power Supply Line High-Speed Data Lines This device is designed to protect data lines by clamping them to a fixed reference. When the voltage on the protected line exceeds the reference voltage the steering diodes are forward biased, conducting the transient current away from the sensitive circuitry. Data lines are connected at pins 1 & 6 and pins 3 & 4. Pins 5 and 2 can be connected to ground or Vcc based on application and location of those connections. The connection to ground should be made directly to a Figure 2. Flow Through Layout for ground plane. The path length should also be kept as Two Data Lines and one Power Line short as possible to minimize parasitic inductance. Figure 1 shows the layout configuration to send data input at pins 6 and 4 and output at pins 1 and 3. This device is designed for ease of PCB layout by allowing the traces run straight through the device. Figure 2 shows the proper way to design the PCB board trace in order to use the flow through layout for two line pairs. The solid line represents the PCB trace. Note the PCB traces are used to connect the pin pairs for each I/O (pin 1 to pin 6 and pins 3 to pin 4). For Figure 3. USB 2.0 (up to 480Mbps) example, I/O 1 enters at pin 6 and exits at pin 1 and Upstream or Downstream Port Protection the PCB trace connects pins 6 and 1 together. This is also true for I/O 2. The negative reference (Gnd) is connected at pin 2. The positive reference is D+ 1 6 D+ to protected Circuit connected at pin 5. Gnd 2 5 Vcc Universal Serial Bus ESD Protection D- The RClamp0502A may also be used to protect both 3 4 D- to protected Circuit upstream and downstream USB ports on monitors, computers, peripherals or portable systems. Each device will protect up to one USB port (Figure 3). When the voltage on the data lines exceed the bus voltage (plus one diode drop), the internal rectifiers are forward biased conducting the transient current away from the protected controller chip. The TVS diode directs the surge to ground. The TVS diode also acts to suppress ESD strikes directly on the voltage bus. Thus, both power and data pins are protected with a single device. © 2008 Semtech Corp. 5 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Applications Information - Spice Model RClamp0502A Spice Model Table 1-RClamp0502A Spice Parameters Parameter Unit D1(LCRD) D2(LCRD) D3(TVS) IS Amp 1E-20 1E-20 2.43E-13 BV Volt 110 20 8 VJ Volt 0.67 0.67 0.64 RS Ohm 0.339 0.568 1.24 IBV Amp 1E-3 1E-3 1E-3 CJO Farad 0.7E-12 0.7E-12 83E-12 TT sec 2.541E-9 2.541E-9 2.541E-9 M -- 0.01 0.01 0.222 N -- 1.1 1.1 1.1 EG eV 1.11 1.11 1.11 © 2008 Semtech Corp. 6 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Outline Drawing - SC-89 (SOT-666) D A D N E/2 E1 E L 1 2 e c Nxb B aaa C A-B D DIMENSIONS A INCHES MILLIMETERS DIM MINNOMMAX MINNOMMAX A .019 - .024 0.50 - 0.60 C b .005 - .012 0.15 - 0.30 c .003 - .007 0.10 - 0.18 L1 D .059 .063 .067 1.50 1.60 1.70 E .061 .063 .067 1.55 1.60 1.70 E1 .043 .047 .049 1.10 1.20 1.25 e .020 BSC 0.50 BSC L .003 .008 .012 0.10 0.20 0.30 L1 .003 .006 .008 0.10 0.15 0.20 N 6 6 aaa .004 0.10 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern - SC-89 (SOT-666) X DIMENSIONS Y DIM INCHES MILLIMETERS C (.057) (1.45) C P .020 0.50 Z G G .024 0.60 X .012 0.30 Y .033 0.85 Y Z .090 2.30 P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. © 2008 Semtech Corp. 7 www.semtech.com

RClamp0502A PROTECTION PRODUCTS Marking Ordering Information Qtyper Reel Part Number Lead Finish Reel Size A RClamp0502A.TCT Pb Free 3,000 7Inch RailClamp and RClamp are registered marks of Semtech Corporation Tape and Reel Specification A A A Tape Specification and Device Orientation Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2008 Semtech Corp. 8 www.semtech.com