HDMIULC6-4SC6 Ultra large bandwidth ESD protection Main applications ■ HDMI ports at 1.65 Gb/s and up to 3.2 Gb/s ■ IEEE 1394a, b, or c up to 3.2Gb/s ■ USB 2.0 ports up to 480 Mb/s (Hi-Speed) SOT23-6L (JEDEC MO178AB) ■ Ethernet port: 10/100/1000 Mb/s ■ Video line protection Functional diagram Description The HDMIULC6-4SC6 is a monolithic, application I/O1 11 6 I/O4 specific discrete device dedicated to ESD When used with an HDMI pthreo tseacmtioen hoigf hth lee vHeDl oMf Ip croontencetciotino nfo. rI tI EaElsEo 1o3ff9e4rsa GND 2 5 VBUS abpep cliocnantieocnt,ePdi nto 5 p srohtoeucltd not against backdrive current flow. and IEEE 1394b/c, USB 2.0, Ethernet links, and I/O2 3 4 I/O3 video lines. Its ultra high cutoff frequency (5.3 GHz) secures a high level of signal integrity. The device topology Benefits provides this integrity without compromising the complete protection of ICs against the most ■ ESD standards compliance guaranteed at stringent ESD strikes. device level, hence greater immunity at system level Features ■ ESD protection of VBUS when applicable. ■ High efficiency due to low residual voltage ■ 4 line 15 kV ESD protection when confronted by an ESD surge ■ Protects V when applicable BUS ■ Minimized rise and fall times for maximum data ■ Ultra high bandwidth - no inluence on signal integrity rise and fall times - maximised number of signal ■ Consistent D+ / D- signal balance: harmonics – Ultra low impact on intra-, inter-pair skew ■ Very low leakage current: 0.5 µA max. – Matching high bit rate HDMI requirements and ready for future evolution ■ Fast response time compared with varistors ■ Low PCB space occupation - 9 mm² maximum ■ SOT23-6L package foot print ■ RoHS compliant ■ Low leakage current for longer operation of battery powered devices Complies with these standards: ■ Higher reliability offered by monolithic ■ IEC 61000-4-2 level 4 integration – 15 kV air discharge Order code – 8 kV (and up to 15 kV) contact discharge Part Number Marking HDMIULC6-4SC6 DL46 July 2006 Rev 2 1/11 www.st.com

Characteristics HDMIULC6-4SC6 1 Characteristics T able 1. Absolute ratings Symbol Parameter Value Unit IEC 61000-4-2 air discharge ±15 V Peak pulse voltage IEC 61000-4-2 contact discharge ±15 kV PP MIL STD883C-Method 3015-6 ±25 T Storage temperature range -55 to +150 °C stg T Maximum junction temperature 125 °C j T Lead solder temperature (10 seconds duration) 260 °C L T able 2. Electrical characteristics (T = 25° C) amb Value Symbol Parameter Test Conditions Unit Min. Typ. Max I Leakage current V = 5 V 0.5 µA RM RM Breakdown voltage between V V BUS I = 1 mA 6 V BR and GND R I = 1 A, t = 8/20 µs PP p 12 V Any I/O pin to GND V Clamping voltage CL I = 5 A, t = 8/20 µs PP p 17 V Any I/O pin to GND V = 0 V, F = 1 MHz 1 R C Capacitance between I/O and GND i/o-GND V = 0 V, F = 825 MHz 0.6 R pF Capacitance variation between I/O ∆C 0.015 i/o-GND and GND V = 0 V, F = 1 MHz 0.42 0.5 R C Capacitance between I/O i/o-i/o V = 0 V, F = 825 MHz 0.3 pF R ∆C Capacitance variation between I/O 0.007 i/o-i/o 2/11

HDMIULC6-4SC6 Characteristics Figure 1. L ine capacitance versus line Figure 2. Line capacitance versus frequency voltage (typical values) (typical values) C(pF) C(pF) 1.0 1.0 00..98 VosVTFcBj==U=58S02205O5m°MPCVEHRNzMS 00..89 VVVoI-sTBOcUj=/G=S3N2O0D5mP=°VEC 0RNVMS 0.7 0.7 0.6 0.6 0.5 CI/O- GND 0.5 CI/O- GND 0.4 0.4 0.3 0.3 0.2 0.2 0.1 Data line voltage (v) 0.1 F(MHz) CI/O-CI/O 0 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1 10 100 1000 10000 Figure 3. R elative variation of leakage Figure 4. Frequency response current versus junction temperature (typical values) Attenuation S21(db) IRM[Tj] /IRM[Tj=25°C] 0 5 4 -2 3 2 -4 -6 Tj(°C) 1 F(Hz) 25 50 75 100 125 -8 111000000...000kkk 111...000MMM 111000...000MMM 111000000...000MMM 111...000GGG 3/11

Application examples HDMIULC6-4SC6 2 Application examples Figure 5. HDMI Digital single link application using HDMIULC6-4SC6 HDMI Host Display Tx0- Rx0- (SetTop Box, (TV, flat panel, DVDplayer, PC) monitor, Tx0+ Rx0+ projector) TMDS HDMIconnectors TMDS transmitter receiver video video Tx1- Rx1- audio Tx1+ Rx1+ audio Multimedia controller controller Tx2- Rx2- Ctrl / Tx2+ Rx2+ Ctrl / status status HDMIULC6-4SC6 TC- RC- TC+ RC+ TMDS links CEC CEC SCL SCL Vcc5V Vcc5V SDA HDMIULC6-4SC6 SDA HPD HPD Control links Figure 6. T1/E1/Ethernet protection Tx SMP75-8 +VCC DATA 4 3 5 2 100 nF TRANSCEIVER 6 11 Rx SMP75-8 4/11

HDMIULC6-4SC6 Application examples 2.1 PCB layout considerations For HDMI applications, V should not be connected. In this case the capacitor C in CC Figure 7. is not needed. Figure 7. PCB layout considerations (V connection is application dependent) CC HDMI D+1 1 D-1 VCC Connector GND C = 100 nF D+2 Side D-2 HDMIULC6-4SC6 A differential impedance of 100 Ω must be respected in the layout. Both lines of the differential pair should have the same length. Figure 8. Footprint dimensions (in mm) 1.20 1.10 0.60 0.95 2.30 3.50 5/11

Technical information HDMIULC6-4SC6 3 Technical information 3.1 Surge protection The HDMIULC6-4SC6 is particularly optimized to perform ESD surge protection based on the rail to rail topology. The clamping voltage V can be calculated as follows: CL V + = V + V for positive surges CL TRANSIL F V - = - V for negative surges CL F with: V = V + R .I F T d p (V forward drop voltage) / (V forward drop threshold voltage) F T and V = V + R . I TRANSIL BR d_TRANSIL P Calculation example We assume that the value of the dynamic resistance of the clamping diode is typically: R = 0.5 Ω and V = 1.1 V. d T We assume that the value of the dynamic resisteance of the transil diode is typically R = 0.5 Ω and V = 6.1 V d_TRANSIL BR For an IEC 61000-4-2 surge Level 4 (Contact Discharge: V = 8 kV, R = 330 Ω), g g V = +5 V, and, in first approximation, we assume that: I = V / R = 24 A. BUS p g g We find: V + = +31.2 V CL V - = -13.1 V CL Note: The calculations do not take into account phenomena due to parasitic inductances. 3.2 Surge protection application example If we consider that the connections from the pin V to V , from I/O to data line, and from BUS CC GND to PCB GND plane are two tracks 10 mm long and 0.5 mm wide, we can assume that the parasitic inductances, L , L , and L , of these tracks are about 6 nH. So when an VBUS I/O GND IEC 61000-4-2 surge occurs on the data line, due to the rise time of this spike (tr = 1 ns), the voltage V has an extra value equal to L .dI/dt + L .dI/dt. CL I/O GND The dI/dt is calculated as: dI/dt = Ip/tr = 24 A/ns for an IEC 61000-4-2 surge level 4 (contact discharge V = 8 kV, R = 330 Ω g g The over voltage due to the parasitic inductances is: L .dI/dt = L .dI/dt = 6 x 24 = 144 V I/O GND By taking into account the effect of these parasitic inductances due to unsuitable layout, the clamping voltage will be: V + = +31.2 + 144 +144 = 319.2 V CL V - = -13.1 - 144 -144 = -301.1 V CL We can reduce as much as possible these phenomena with simple layout optimization. 6/11

HDMIULC6-4SC6 Technical information It’s the reason why some recommendations have to be followed (see Section3.3: How to ensure good ESD protection). Figure 9. ESD behavior: parasitic phenomena due to unsuitable layout EESSDD ssuurrggee oonn ddaattaa lliinnee VVVVCCCCLLLL++++ VVBBUUSS DDaattaa lliinnee LLII//OO LLLLIIII////OOOOddddddddttttiiii LLVVBBUUSS LLLLLLLIIIIIII///////OOOOOOOddddddddddddddtttttttiiiiiii+++++++LLLLLLLGGGGGGGNNNNNNNDDDDDDDddddddddddddddtttttttiiiiiii PPPPSSSSOOOOUUUUSSSSRRRRIIIITTTTGGGGIIIIVVVVEEEEEEEE VVccccppiinn VVFF VVTTRRAANNSSIILL VVCCLL VVTTRRAANNSSIILL++VVFF II//OO ppiinn tttt ttttrrrr====1111nnnnssss GGNNDD ppiinn ddddiiii ttrr==11nnss LLGGNNDD LLLLGGGGNNNNDDDDddddtttt tt --VV FF di di V =V +V +L +L surge>0 VCL+=-VTRA-NSLIL dFi-LI/Oddti GNDdt surge<0 ----LLLLIIII////OOOOddddddddttttiiii----LLLLGGGGNNNNDDDDddddddddttttiiii NNEESSGGUUAARRTTGGIIEEVVEE CL- F I/Odt GNDdt V =V +Rd.Ip TRANSIL BR VV CCLL-- 3.3 How to ensure good ESD protection While the HDMIULC6-4SC6 provides a high immunity to ESD surge, an efficient protection depends on the layout of the board. In the same way, with the rail to rail topology, the track from data lines to I/O pins, from V to V pin, and from GND plane to GND pin must be CC BUS as short as possible to avoid over voltages due to parasitic phenomena (see Figure9 and Figure10 for layout considerations). F igure 10. ESD behavior: layout Figure 11. ESD behavior: measurement optimization conditions ESD SURGE TEST BOARD IN OUT Unsuitable layout HHDDMMIIUULLCC66--44SSCC66 Vbus Optimized layout 7/11

Technical information HDMIULC6-4SC6 F igure 12. Remaining voltage after the Figure 13. Remaining voltage after the HDMIULC6-4SC6 during HDMIULC6-4SC6 during positive ESD surge negative ESD surge Note: The measurements have been done with the HDMIULC6-4SC6 in open circuit. IMPORTANT: An important precaution to take is to put the protection device as close as possible to the disturbance source (generally the connector). 3.4 Crosstalk behavior Figure 14. Crosstalk phenomena RG1 Line 1 VG1 RL1 α1VG1+β12VG2 RG2 Line 2 VG2 RL2 α2VG2+β21VG1 DRIVERS RECEIVERS The crosstalk phenomena is due to the coupling between 2 lines. The coupling factor (β or 12 β ) increases when the gap across lines decreases, particularly in silicon dice. In the 21 example above the expected signal on load R is α V , in fact the real voltage at this point L2 2 G2 has got an extra value β V . This part of the V signal represents the effect of the 21 G1 G1 crosstalk phenomenon of the line 1 on the line 2. This phenomenon has to be taken into account when the drivers impose fast digital data or high frequency analog signals in the disturbing line. The perturbed line will be more affected if it works with low voltage signal or high load impedance (few kΩ). 8/11

HDMIULC6-4SC6 Technical information Figure 15. Analog crosstalk measurements TEST BOARD NETWORK ANALYSER NETWORK ANALYSER PORT 1 PORT 2 Vbus Figure15 gives the measurement circuit for the analog application. In usual frequency range of analog signals (up to 240 MHz) the effect on disturbed line is less than -45 dB (see Figure16). Figure 16. Analog crosstalk results dB 0.00 -30.00 -60.00 -90.00 F (Hz) -120.00 100.0k 1.0M 10.0M 100.0M 1.0G As the HDMIULC6-4SC6 is designed to protect high speed data lines, it must ensure a good transmission of operating signals. The frequency response (Figure 4.) gives attenuation information and shows that the HDMIULC6-4SC6 is well suitable for data line transmission up to 3.2 Gb/s. 9/11

Package information HDMIULC6-4SC6 4 Package information T able 3. SOT23-6L dimensions DIMENSIONS REF. Millimeters Inches Min. Typ. Max. Min. Typ. Max. E A 0.90 1.45 0.035 0.057 A1 0 0.10 0 0.004 e A2 0.90 1.30 0.035 0.051 b D b 0.35 0.50 0.014 0.02 e c 0.09 0.20 0.004 0.008 A2 D 2.80 3.05 0.110 0.120 E 1.50 1.75 0.059 0.069 e 0.95 0.037 c θ A1 L H 2.60 3.00 0.102 0.118 H L 0.10 0.60 0.004 0.024 θ 0° 10° 0° 10° In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 5 Ordering information Ordering code Marking Package Weight Base qty Delivery mode HDMIULC6-4SC6 DL46 SOT23-6L 16.7 mg 3000 Tape and reel 6 Revision history Date Revision Description of Changes 28-Mar-2006 1 First Issue 26-Jul-2006 2 Replaced technical information section. 10/11

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