ULC0544T

ULC0544T Ultra Low Capacitance TVS Arrays Features Description Leiditech  are ultra low capacitance TVS arrays designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). The Leiditech 0544T has a typical capacitance of only 0.30pF between I/O pins. This allows it to be used on circuits operating in excess of 3GHz without signal attenuation. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact discharge). Each device is designed to protect four lines (two differential pairs). The ULC0544T is in a 8-pin, RoHS/WEEE compliant, SLP2010P8T package. It measures 2.0 x 1.0 x 0.4mm. The leads are spaced at a pitch of 0.4mm and are finished with lead-free NiPdAu. They are designed for easy PCB layout by allowing the traces to run straight through the device. The combination of small size, low capacitance, and high level of ESD protection makes them a flexible solution for applications such as mini HDMI, MDDI, USB, and eSATA interfaces. Dimensions ‹ ESD protection for high-speed data lines to ‹ ‹ ‹ ‹ ‹ ‹ ‹ IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-5 (Lightning) 5A (8/20µs) IEC 61000-4-4 (EFT) 40A (5/50ns) Package design optimized for high speed lines Flow-Through design Protects four I/O lines Low capacitance: 0.3pF typical (I/O to I/O) Low clamping voltage Low operating voltage: 5V Solid-state silicon-avalanche technology Mechanical Characteristics ‹ ‹ ‹ ‹ ‹ ‹ SLP2010P8T 8-pin package (2.0 x 1.0 x 0.4mm) RoHS/WEEE Compliant Lead Pitch: 0.4mm Lead finish: NiPdAu Marking: Marking code + date code Packaging: Tape and Reel Applications ‹ ‹ ‹ ‹ ‹ ‹ ‹ Cell Phones and Accessories Mini HDMI MDDI Ports USB LVDS eSATA PCI Express Circuit Diagram 2.00 1 2 GND 3 4 1.00 8 7 6 Pin 1 5 Pin 2 Pin 3 Pin 4 0.40 BSC 0.40 GND Note: Pins 5-8 not internally connected Nominal Dimensions in mm Specifications are subject to change without notice Rev : 01.06.2014 1/10 4-Line Protection Page 1 of 3 www.leiditech.com ULC0544T PRELIMINARY Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 8/20µs) Pp k 75 Watts Peak Pulse Current (tp = 8/20µs) IP P 5 A ESD p er IEC 61000-4-2 (Air) ESD p er IEC 61000-4-2 (Contact) VESD +/- 18 +/- 12 kV TJ -55 to +125 °C TSTG -55 to +150 °C Op erating Temp erature Storage Temp erature Electrical Characteristics (T=25oC) Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM Pin 1, 2, 3, or 4 to GN D Reverse Breakdown Voltage V BR It = 1mA, Pin 1, 2, 3, or 4 to GN D Reverse Leakage Current IR VRWM = 5.0V, Pin 1, 2, 3, or 4 to GN D Clamp ing Voltage VC Clamp ing Voltage Junction Cap acitance Maximum Units 5 V 8 11 V 0.005 0.100 µA IPP = 1A, tp = 8/20µs Pin 1, 2, 3, or 4 to GN D 12 V VC IPP = 5A, tp = 8/20µs Pin 1, 2, 3, or 4 to GN D 15 V Cj VR = 0V, f = 1MHz, Pin 1, 2, 3, or 4 to GN D 0.7 0.80 pF VR = 0V, f = 1MHz, Between I/O p ins 0.3 0.4 pF Specifications are subject to change without notice Rev : 01.06.2014 2/10 Minimum 6.5 Typical Page 1 of 3 www.leiditech.com ULC0544T PRELIMINARY Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Pulse Waveform 110 Waveform Parameters: tr = 8µs td = 20µs 100 10 Peak Pulse Power - P PP (kW) 90 PP 80 Percent of I 1 0.1 70 e-t 60 50 40 td = IPP/2 30 20 10 0 0.01 0.1 1 10 0 100 5 Pulse Duration - tp (us) 10 15 20 25 Time (µs) Normalized Capacitance vs. Reverse Voltage Clamping Voltage vs. Peak Pulse Current 25 2 f = 1MHz 1.8 20 1.6 Line to Line 1.4 15 10 CJ(VR) / CJ(VR=0) Clamping Voltage -VC (V) 30 Line to Gnd Waveform Parameters: tr = 8µs td = 20µs 5 1 2 3 4 5 1 0.8 0.6 0.4 0.2 0 0 1.2 6 Peak Pulse Current - IPP (A) ESD Clamping (Pin 1, 2, 3, or 4 to GND) (+8kV Contact per IEC 61000-4-2) Specifications are subject to change without notice Rev : 01.06.2014 3/10 0 0 1 2 3 Reverse Voltage - VR (V) 4 5 USB 2.0 Eye Pattern with ULC0544T Page 1 of 3 www.leiditech.com ULC0544T PRELIMINARY Typical Characteristics (Con’t) Insertion Loss S21 - I/O to I/O CH1 S21 LOG Insertion Loss S21 - I/O to GND 6 dB / REF 0 dB CH1 S21 LOG 6 dB / REF 0 dB 1: -0.0715 dB 800 MHz 5 0 dB 12 3 2: -0.0442 dB 900 MHz -12 dB 12 4: -0.5150 dB 2.5 GHz -18 dB -12 dB -30 dB -30 dB -36 dB -36 dB -42 dB -42 dB 1 MHz START. 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3 000. 000000 MHz HDMI Eye Pattern (720p with ULC0544T) Specifications are subject to change without notice Rev : 01.06.2014 4/10 -48 dB 2: -0.2095 dB 900 MHz 4 4: -0.2029 dB 2.5 GHz -18 dB -24 dB 3 3: -0.6419 dB 1.8 GHz -6 dB -24 dB -48 dB 5 0 dB 4 3: -0.4690 dB 1.8 GHz -6 dB 1: -0.2214 dB 800 MHz 1 MHz START. 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3 000. 000000 MHz HDMI Eye Pattern (1080p with ULC0544T) Page 1 of 3 www.leiditech.com ULC0544T Applications Information Design Recommendations for HDMI Protection Adding external ESD protection to HDMI ports can be challenging. First, ESD protection devices have an inherent junction capacitance. When adding even a small amount of capacitance, it will cause the impedance of the differential pair to drop. Second, large packages and land pattern requirements can cause discontinuities that adversely affect signal integrity. The ULC0544T is specifically designed for protection of high-speed interfaces, such as HDMI. It presents ±8kV ESD contact discharges (>±15kV air discharge) as outlined in IEC 61000-4-2. The device is in a leadless SLP package that is less than 1.1mm wide. It is designed such that the traces flow straight through the device. The narrow package and flow-through design reduce discontinuities and minimize impact on signal integrity. This becomes even more critical as signal speeds increase. Input 1 1 8 NC Input 2 2 7 NC GND Input 3 3 6 NC Input 4 4 5 NC Figure 1 - SLP2010P8T Pin Configuration (Top View) Pin Identification 1, 2, 3, 4 Inp ut Lines 5, 6, 7, 8 Outp ut Lines (N o Internal Connection) Center Tab Ground Pin Configuration Figure 2 is an example of how to route the high speed differential traces through the ULC0544T. The PCB traces are used to connect the pin pairs for each line (pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, pin 4 to pin 5). For example, line 1 enters at pin 1 and exits at Pin 8, and the PCB trace connects pin 1 and 8 together. This is true for lines connected at pins 2, 3, and 4 also. Note that there are no internal connections to pins 5 - 8. Ground is connected at the center tabs. One large ground pad should be used in lieu of two separate pads. TDR Measurements for HDMI The combination of low capacitance, small package, and flow-through design means it is possible to use these devices to meet the HDMI impedance requirements of 100 Ohm ±15% without any PCB board modification. For signal integrity purposes, the best results will be obtained by using the ULC0544T to protect the high-speed differential pairs. This is because the device is designed such that the data lines from the connector line up with the I/O pins of the device without altering the trace routing. Specifications are subject to change without notice Rev : 01.06.2014 5/10 Figure 2 - Flow through Layout Using ULC0544T Page 1 of 3 www.leiditech.com ULC0544T Applications Information Data 2+ Data 2Data 1+ Data 1- To HDMI Graphics Chip Data 0+ Data 0-Clk+ ClkULC0544T (3 Each) CEC SCL SDA HP Detect 5VPower Gnd Figure 3. HDMI Protection Example Host Rx Host Rx + B- A- Host Plug A+ ESATA Host Tx + Host Tx - B+ ULC0544T A+ Dev Rx + Dev Rx - ESATA Device Plug A- B- Dev Tx Dev Tx + B+ - ULC0544T ple o t ection Exam Figure 4. eSA TA Pr Example eSAT Pro Specifications are subject to change without notice Rev : 01.06.2014 6/10 Page 1 of 3 www.leiditech.com ULC0544T Applications Information MDDI_Data0+ MDDI_Data0Gnd MDDI_Data1+ MDDI Link Controller Gnd MDDI Link Controller MDDI_Data1ULC0544T ULC0544T MDDI_Stb+ MDDI_StbGnd Gnd Host Pwr HOST Host Gnd DISPLAY Figure 5. MDDI Protection Example Specifications are subject to change without notice Rev : 01.06.2014 7 /10 Page 1 of 3 www.leiditech.com ULC0544T Applications Information - Spice Model ULC0544T Spice Model ULC0544T Spice Parameters Parameter Unit D1 D2 D3 IS Amp 1E-20 1E-20 2E-12 BV Volt 100 100 8.2 VJ Volt 0.83 0.83 0.6 RS Ohm 1.5 0.6 0.2 IB V Amp 1E-3 1E-3 1E-3 CJO Farad 0.25E-12 0.25E-12 56E-12 TT sec 2.541E-9 2.541E-9 2.541E-9 M -- 0.01 0.01 0.23 N -- 1.1 1.1 1.1 EG eV 1.11 1.11 1.11 Specifications are subject to change without notice Rev : 01.06.2014 8 /10 Page 1 of 3 www.leiditech.com ULC0544T Outline Drawing - SLP2010P8T A D B DIM E PIN 1 INDICATOR (LASER MARK) A SEATING PLANE aaa C A2 .015 .016 .017 0.00 .001 .002 (.005) .006 .008 .010 .077 .079 .082 .037 .039 .043 .016 BSC .013 .015 .017 8 .003 .004 0.37 0.40 0.43 0.00 0.02 0.05 (0.13) 0.15 0.20 0.25 1.95 2.00 2.08 0.95 1.00 1.08 0.40 BSC 0.32 0.38 0.43 8 0.08 0.10 C A1 1 A A1 A2 b D E e L N aaa bbb DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX 2 LxN E/2 N R 0.075 bxN e bbb C A B D/2 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). Land Pattern - SLP2010P8T (C) G Z Y P DIM C G P X Y Z DIMENSIONS INCHES MILLIMETERS (.035) (0.88) 0.21 .008 0.40 .016 .008 0.20 .026 0.67 .061 1.55 X NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Specifications are subject to change without notice Rev : 01.06.2014 9 /10 Page 1 of 3 www.leiditech.com ULC0544T Marking Codes Ordering Information 0544P PIN 1 INDICATOR YYWW Part Number Qty per Reel R eel Size ULC0544T 3000 7 Inch RailClamp and RClamp are marks of Semtech Corporation YYWW = Date Code Tape and Reel Specification Pin 1 Location User Direction of feed Device Orientation in Tape A0 1.21 +/-0.05 mm B0 K0 2.21 +/-0.05 mm Tape Width B, (Max) D 8 mm 4.2 mm 1.5 + 0.1 mm - 0.0 mm ) 0.66 +/-0.05 mm D1 E 0.5 mm ±0.05 1.750±.10 mm F K (MAX) P P0 P2 T(MAX) 3.5±0.05 mm 2.4 mm 4.0±0.1 mm 4.0±0.1 mm 2.0±0.05 mm 0.4 mm W 8.0 mm + 0.3 mm - 0.1 mm Shanghai Leiditech Electronic Co.,Ltd Email: sale1@leiditech.com Tel : +86- 021 50828806 Fax : +86- 021 50477059 Specifications are subject to change without notice Rev : 01.06.2014 10/10 Page 1 of 3 www.leiditech.com