SRV05-4

SRV05-4_08 SEMTECH | Alldatasheet

Document overview

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Technical content

1 www.semtech.com PROTECTION PRODUCTS SRV05-4 Low Capacitance TVS Diode Array Description Features Circuit Diagram Schematic and PIN Configuration Revision 01/18/2008 RailClamps are surge rated diode arrays designed to protect high speed data interfaces. The SR series has been specifically designed to protect sensitive compo- nents which are connected to data and transmission lines from overvoltage caused by electrostatic dis- charge (ESD), electrical fast transients (EFT), and lightning. The unique design of the SR series devices incorpo- rates eight surge rated, low capacitance steering diodes and a TVS diode in a single package. 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 down- stream components. The SRV05-4 has a low typical capacitance of 3pF and operates with virtually no insertion loss to 1GHz. This makes the device ideal for protection of high-speed data lines such as USB 2.0, Firewire, DVI, and gigabit Ethernet interfaces. The low capacitance array configuration allows the user to protect four high-speed data or transmission lines. The low inductance construction minimizes voltage overshoot during high current surges. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact dis- charge).

Applications

Mechanical Characteristics ‹ USB 2.0 Power and Data Line Protection ‹ Video Graphics Cards ‹ Monitors and Flat Panel Displays ‹ Digital Video Interface (DVI) ‹ 10/100/1000 Ethernet ‹ Notebook Computers ‹ SIM Ports ‹ ATM Interfaces ‹ IEEE 1394 Firewire Ports ‹ ESD protection for high-speed data lines to IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 12A (8/20µs) ‹ Array of surge rated diodes with internal TVS Diode ‹ Small package saves board space ‹ Protects four I/O lines ‹ Low capacitance: 3pF typical ‹ Low clamping voltage ‹ Low operating voltage: 5.0V ‹ Solid-state silicon-avalanche technology ‹ JEDEC SOT-23 6L package ‹ Molding compound flammability rating: UL 94V-0 ‹ Marking : V05 ‹ Packaging : Tape and Reel SOT-23 6L (Top View) 13 4 6

2 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 Absolute Maximum Rating

Electrical Characteristics

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3 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 100 110 0 25 50 75 100 125 150 Ambient Temperature - T A (oC) % of Rated Power or IPP Clamping Voltage vs. Peak Pulse CurrentPulse Waveform Forward Voltage vs. Forward Current Normalized Capacitance vs. Reverse Voltage 0.00 5.00 10.00 15.00 20.00 25.00 30.00 Peak Pulse Current - I PP (A) Clamping Voltage -VC (V) Waveform Parameters: tr = 8µs td = 20µs 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 Forward Current - IF (A) Forward Voltage -VF (V) Waveform Parameters: tr = 8µs td = 20µs 0.01 0.1 0.1 1 10 100 1000 Pulse Duration - tp (µs) Peak Pulse Power - PPk (kW) 100 110 0 5 10 15 20 25 30 Time (µs) Percent of I PP e-t td = IPP/2 Waveform Parameters: tr = 8µs td = 20µs 0.2 0.4 0.6 0.8 1.2 1.4 012345 Reverse Voltage - VR (V) CJ(VR) / CJ(VR=0) f = 1 MHz

4 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 3 dB/CH1 S21 LOG REF 0 dB START .030 000 MHz STOP 3 000 . 000 000 MHz CH1 S21 LOG 20 dB/ REF 0 dB START .030 000 MHz STOP 3 000 . 000 000 MHz Insertion Loss S21 Analog Cross Talk Applications Information

5 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 Device Connection Options for Protection of Four High-Speed Data Lines The SRV05-4 TVS is designed to protect four data lines from transient over-voltages by clamping them to a fixed reference. When the voltage on the protected line exceeds the reference voltage (plus diode V F) the steering diodes are forward biased, conducting the transient current away from the sensitive circuitry. Data lines are connected at pins 1, 3, 4 and 6. The negative reference (REF1) is connected at pin 2. This pin should be connected directly to a ground plane on the board for best results. The path length is kept as short as possible to minimize parasitic inductance. The positive reference (REF2) is connected at pin 5. The options for connecting the positive reference are as follows: 1. To protect data lines and the power line, connect pin 5 directly to the positive supply rail (V CC). In this configuration the data lines are referenced to the supply voltage. The internal TVS diode prevents over-voltage on the supply rail. 2. The SRV05-4 can be isolated from the power supply by adding a series resistor between pin 5 and V CC. A value of 100k Ω is recommended. The internal TVS and steering diodes remain biased, providing the advantage of lower capacitance. 3. In applications where no positive supply reference is available, or complete supply isolation is desired, the internal TVS may be used as the reference. In this case, pin 5 is not connected. The steering diodes will begin to conduct when the voltage on the protected line exceeds the working voltage of the TVS (plus one diode drop). ESD Protection With RailClamps RailClamps are optimized for ESD protection using the rail-to-rail topology. Along with good board layout, these devices virtually eliminate the disadvantages of using discrete components to implement this topology. Consider the situation shown in Figure 1 where dis- crete diodes or diode arrays are configured for rail-to- rail protection on a high speed line. During positive duration ESD events, the top diode will be forward biased when the voltage on the protected line exceeds Data Line and Power Supply Protection Using Vcc as reference Data Line Protection with Bias and Power Supply Isolation Resistor Data Line Protection Using Internal TVS Diode as Reference Applications Information

10 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 10/100 ETHERNET PROTECTION CONT’ Ethernet circuit to provide differential and common mode protection. The SRV05-4 can not be grounded on the line side because the hi-pot test requires the line side not to be grounded.

11 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 Applications Information - SPICE Model SRV05-4 Spice Model sretemaraPecipS4-50VRS retemaraPt inU) DRCL(1D) DRCL(2D) SVT(3D SIp mA4 1-E014 1-E014 1-E01 VBt loV0 810 29 5.8 JVt loV2 6.09 5.06 .0 SRm hO1 3.07 3.00 05.0 VBIp mA3 -E13 -E13 -E1 OJCd araF2 1-E32 1-E12 1-E063 TTc es9 -E145.29 -E145.29 -E145.2 M- -1 0.01 0.04 33.0 N- -1 .11 .11 .1 GEV e1 1.11 1.11 1.1 nH

12 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 Outline Drawing - SO-8 Land Pattern -SOT23 6L Outline Drawing -SOT23 6L .110 BSC .037 BSC DETAIL aaa C SEATING ccc C 2X N/2 TIPS 2X E/2 SEE DETAIL AA2 bxN A .008 N E .060 .114 .063 .122 .010 - A 0.20 1.60 3.10

2.80 BSC

0.95 BSC

.069 1.50 2.90 .020 0.25 1.75 0.50- EI L (L1) c 0.25 PLANE GAGE H 2.80.110 bbb C A-B D .008 .004 .012 .003 (.024) .018 .035 .000 .035 .045 0.10 0.20 10° 0° - 10° 1.15 (0.60) 0.45.024 .009 0.30 0.08 .057 .051 .006 0.00 .90 0.90 0.22 0.60 0.15 1.45 1.30 1.90 BSC.075 BSC A e1 D e B C PLANE D DATUMS AND TO BE DETERMINED AT DATUM PLANE CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS3. OR GATE BURRS. NOTES: 2. -A- -B- -H- SIDE VIEW NOM INCHES DIMENSIONS aaa bbb ccc N DIM c e L E D b A MIN MILLIMETERS MAX MIN NOM MAX DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS P (C) Z Y G .043 .141 .055 (.098) .037 .024 1.40 (2.50) 0.95 0.60 1.10 3.60 X DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES:

13 2008 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4 Contact Information Semtech Corporation Protection Products Division

200 Flynn Road, Camarillo, CA 93012

Phone: (805)498-2111 FAX (805)498-3804 traP rebmuN hsiniFdaeL repytQ leeR eziSleeR CT.4-50VRSb PnS0 00,3h cnI7 TCT.4-50VRSe erfbP0 00,3h cnI7 Marking Codes rebmuNtraP gnikraM edoC 4-50VRS5 0V

Ordering Information

Tape and Reel Specification epaT htdiW )xaM(,BD 1 DE F K )XAM( P0 P2 P) XAM(TW mm8 mm2.4 )561.( mm1.0+5.1 mm0.0- mm0.1 50.0± 01.±057.1 mm 50.0±5.3 mm mm4.2 1.0±0.4 mm 1.0±0.4 mm 50.0±0.2 mm mm4.0 mm0.8 mm3.0+ mm1.0- 0A0 B0 K User Direction of feed