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this is information on a product in full production. september 2012 doc id 018879 rev 2 1/12 12 HDMIULC6-4SC6Y automotive ultralarge bandwidth esd protection datasheet ? production data features 4-line 15 kv esd protection protects v bus when applicable ultrahigh bandwidth - no influence on signal rise and fall times - maximized number of signal harmonics very low leakage current: 0.5 a max. fast response time compared with varistors sot23-6l package rohs compliant benefits esd standards compliance guaranteed at device level, hence greater immunity at system level esd protection of v bus when applicable. high efficiency due to low residual voltage when confronted by an esd surge minimized rise and fall times for maximum data integrity consistent d+ / d- signal balance: ? ultralow impact on intra-, inter-pair skew ? matching high bit rate hdmi requirements and ready for future evolution low pcb space occupation - 9 mm 2 maximum footprint higher reliability offered by monolithic integration complies with these standards: iec 61000-4-2 level 4 ? 15 kv air discharge ? 8 kv (and up to 15 kv) contact discharge applications hdmi ports at 1.65 gb/s and up to 3.2 gb/s ieee 1394a, b, or c up to 3.2 gb/s usb 2.0 ports up to 480 mb/s (hi-speed) ethernet port: 10/100/1000 mb/s video line protection aec-q101 qualified description the HDMIULC6-4SC6Y is a monolithic, application specific discrete device dedicated to esd protection of the hdmi connection. it also offers the same high level of protection for ieee 1394a and ieee 1394b/c, usb 2.0, ethernet links, and video lines. its ultrahigh cutoff frequency (5.3 ghz) secures a high level of signal integrity. the device topology provides this integrity without compromising the complete protection of ics against the most stringent esd strikes. sot23-6l (jedec mo178ab) www.st.com
characteristics HDMIULC6-4SC6Y 2/12 doc id 018879 rev 2 1 characteristics figure 1. functional diagrams table 1. absolute ratings symbol parameter value unit v pp peak pulse voltage iec 61000-4-2 air discharge iec 61000-4-2 contact discharge mil std883c-method 3015-6 15 15 25 kv t stg storage temperature range -55 to +150 c t j maximum junction temperature 125 c t l lead solder temperature (10 seconds duration) 260 c table 2. electrical characteristics (t amb = 25 c) symbol parameter test conditions value unit min. typ. max i rm leakage current v rm = 5 v 0.5 a v br breakdown voltage between v bus and gnd i r = 1 ma 6 v v cl clamping voltage i pp = 1 a, t p = 8/20 s any i/o pin to gnd 12 v i pp = 5 a, t p = 8/20 s any i/o pin to gnd 17 v c i/o-gnd capacitance between i/o and gnd v r = 0 v, f = 1 mhz 1 pf v r = 0 v, f = 825 mhz 0.6 ? c i/o- gnd capacitance variation between i/o and gnd 0.015 c i/o-i/o capacitance between i/o v r = 0 v, f = 1 mhz 0.42 0.5 pf v r = 0 v, f = 825 mhz 0.3 ? c i/o-i/o capacitance variation between i/o 0.007 1 16 2 5 3 4 i/o1 i/o4 gnd v bus i/o2 i/o3 sot23-6l when used with an hdmi application, pin 5 should not be connected to protect against backdrive current flow.
HDMIULC6-4SC6Y characteristics doc id 018879 rev 2 3/12 figure 2. line capacitance versus line voltage (typical values) figure 3. line capacitance versus frequency (typical values) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 f=825mhz v osc = 500mv rms v bus open t j =25 c 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 data line voltage (v) c i/o - gnd c(pf) 0 v osc =30mv rms t j =25 c v i-o/gnd = 0v f(mhz) 1 10 100 1000 10000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 c(pf) c i/o - gnd c i/o -c i/o v open bus figure 4. relative variation of leakage current versus junction temperature (typical values) figure 5. frequency response 1 2 3 4 5 25 50 75 100 125 i[t rm j ] / i [t rm j =25c] t (c) j 1.0m 10.0m 100.0m 1.0g - 15.00 - 12.00 - 9.00 - 6.00 - 3.00 0.00 ligne 1 s21(db) f(hz)
application examples HDMIULC6-4SC6Y 4/12 doc id 018879 rev 2 2 application examples figure 6. hdmi digital single link application using HDMIULC6-4SC6Y figure 7. t1/e1/ethernet protection tmds links tc+ tc- tx2+ tx2- tx1+ tx1- tx0+ tx0- tmds transmitter video audio ctrl / status video audio ctrl / status multimedia controller controller rx0- rx0+ tmds receiver rx1- rx1+ rx2- rx2+ rc- rc+ display (tv, flat panel, monitor, projector) host (set top box, dvd player, pc) scl cec cec scl control links sda sda hpd hpd hdmi connectors vcc 5v vcc 5v hdmiulc6-4sc6 hdmiulc6-4sc6 hdmi +v cc 100 nf data transeiver smp75-8 smp75-8 tx rx 1 1 6 2 5 3 4
HDMIULC6-4SC6Y application examples doc id 018879 rev 2 5/12 2.1 pcb layout considerations for hdmi applications, v cc should not be connected. in this case the capacitor c in figure 8. is not needed. figure 8. pcb layout considerations (v cc connection is application dependent) a differential impedance of 100 ? must be respected in the layout. both lines of the differential pair should have the same length. figure 9. sot23-6l footprint dimensions (in mm) d+1 c = 100 nf d-1 gnd hdmiulc6-4sc6 d+2 d-2 v cc 1 hdmi connector side 0.95 [0.037] 0.60 [0.023] 1.20 [0.047] 1.10 [0.043] 3.50 [0.138] 2.30 [0.091]
technical information HDMIULC6-4SC6Y 6/12 doc id 018879 rev 2 3 technical information 3.1 surge protection the HDMIULC6-4SC6Y is particularly optimized to perform esd surge protection based on the rail to rail topology. the clamping voltage v cl can be calculated as follows ?v cl + = v transil + v f , for positive surges ?v cl - = - v f , for negative surges with: v f = v t + r d .i p (v f forward drop voltage) / (v t forward drop threshold voltage) and v transil = v br + r d_transil i p calculation example we assume that the value of the dynamic resistance of the clamping diode is typically: r d = 0.5 ? and v t = 1.1 v. we assume that the value of the dynamic resistance of the transil diode is typically r d_transil = 0.5 ? and v br = 6.1 v for an iec 61000-4-2 surge level 4 (contact discharge: v g = 8 kv, r g = 330 ? ), v bus = +5 v, and, in first approximation, we assume that: i p = v g / r g = 24 a. we find: ?v cl + = +31.2 v ?v cl - = -13.1 v 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 bus to v cc , from i/o to data line, and from gnd to pcb gnd plane are two tracks 10 mm long and 0.5 mm wide, we can assume that the parasitic inductances, l vbus , l i/o , and l gnd , of these tracks are about 6 nh. so when an iec 61000-4-2 surge occurs on the data line, due to the rise time of this spike (tr = 1 ns), the voltage v cl has an extra value equal to l i/o .di/dt + l gnd .di/dt. the di/dt is calculated as: di/dt = i p /t r = 24 a/ns for an iec 61000-4-2 surge level 4 (contact discharge v g = 8 kv, r g = 330 ? the over voltage due to the parasitic inductances is: l i/o .di/dt = l gnd .di/dt = 6 x 24 = 144 v by taking into account the effect of these parasitic inductances due to unsuitable layout, the clamping voltage will be: ?v cl + = +31.2 + 144 +144 = 319.2 v ?v cl - = -13.1 - 144 -144 = -301.1 v we can reduce as much as possible these phenomena with simple layout optimization.
HDMIULC6-4SC6Y technical information doc id 018879 rev 2 7/12 it?s the reason why some recommendations have to be followed (see section 3.3: how to ensure good esd protection ). figure 10. esd behavior: parasitic phenomena due to unsuitable layout 3.3 how to ensure good esd protection while the HDMIULC6-4SC6Y provides a high immu nity 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 cc to v bus pin, and from gnd plane to gnd pin must be as short as possible to avoid over voltages due to parasitic phenomena (see figure 10 and figure 11 for layout considerations). v bus data line v cl l vbus l i/o l gnd v transil esd surge on data line v f dt di l i/o dt di l i/o dt di l gnd dt di l gnd v cc pin i/o pin gnd pin v bus data line v cl l vbus l i/o l gnd v transil esd surge on data line v f dt di l i/o dt di l i/o dt di l gnd dt di l gnd v cc pin i/o pin gnd pin 0 surge dt di l dt di l v v 0 surge dt di l dt di l v v v gnd i/o f cl gnd i/o f transil cl < - - - = > + + + = - + tr=1ns t v cl- negative surge dt di l dt di l gnd i/o - - dt di l dt di l gnd i/o - - -v f tr=1ns t v cl- negative surge dt di l dt di l gnd i/o - - dt di l dt di l gnd i/o - - -v f v transil +v f tr=1ns t v cl+ dt di l dt di l gnd i/o + positive surge tr=1ns t v cl+ dt di l dt di l gnd i/o + dt di l dt di l gnd i/o + positive surge v transil +v f tr=1ns t v cl+ dt di l dt di l gnd i/o + dt di l dt di l gnd i/o + positive surge tr=1ns t v cl+ dt di l dt di l gnd i/o + dt di l dt di l gnd i/o + positive surge rd.ip v v br transil + = figure 11. esd behavior: layout optimization figure 12. esd behavior: measurement conditions unsuitable layout optimized layout test board vbus esd surge out in hdmiulc6 - 4sc6 hdmiulc6 - 4sc6
technical information HDMIULC6-4SC6Y 8/12 doc id 018879 rev 2 note: the measurements have been done with the HDMIULC6-4SC6Y 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 15. crosstalk phenomena the crosstalk phenomena is due to the coupling between 2 lines. the coupling factor ( ? 12 or ? 21 ) increases when the gap acro ss lines decreases, particularly in silicon dice. in the example above the expected signal on load r l2 is ? 2 v g2 , in fact the real voltage at this point has got an extra value ? 21 v g1 . this part of the v g1 signal represents the effect of the 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 wo rks with low voltage signal or high load impedance (few k ? ). figure 13. figure 14. line 1 line 2 v g1 v g2 r g1 r g2 drivers r l1 r l2 receivers + 1 12 v g1 v g2 + 2 21 v g2 v g1
HDMIULC6-4SC6Y technical information doc id 018879 rev 2 9/12 figure 16. analog crosstalk measurements figure 16 gives the measurement circuit for the anal og application. in usual frequency range of analog signals (up to 240 mhz) the effect on disturbed line is less than -45 db (see figure 17 ). figure 17. analog crosstalk results as the HDMIULC6-4SC6Y is designed to protec t high speed data lines, it must ensure a good transmission of operating signals. the frequency response ( figure 5. ) gives attenuation information and shows that the hd miulc6-4sc6y is well suitable for data line transmission up to 3.2 gb/s. network analyser port 2 network analyser port 1 test board network analyser port 2 network analyser port 1 test board 100.0k 1.0m 10.0m 100.0m 1.0g - 120.00 - 90.00 - 60.00 - 30.00 0.00 db f (hz)
package information HDMIULC6-4SC6Y 10/12 doc id 018879 rev 2 4 package information epoxy meets ul94, v0 lead-free package in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 18. footprint (dimensions in mm) table 3. sot23-6l dimensions ref. dimensions millimeters inches min. typ. max. min. typ. max. a 0.90 1.45 0.035 0.057 a1 0 0.15 0 0.006 a2 0.90 1.30 0.035 0.051 b 0.30 0.50 0.012 0.020 c 0.09 0.20 0.004 0.008 d 2.80 3.05 0.11 0.118 e 1.50 1.75 0.059 0.069 e0.95 0.037 h 2.60 3.00 0.102 0.118 l 0.30 0.60 0.012 0.024 ? 0 10 0 10 a2 a l h c b e d e e a1 0.95 0.60 1.20 1.10 3.50 2.30
HDMIULC6-4SC6Y ordering information doc id 018879 rev 2 11/12 5 ordering information 6 revision history table 4. ordering information order code marking package weight base qty delivery mode HDMIULC6-4SC6Y dl4y sot23-6l 16.7 mg 3000 tape and reel table 5. document revision history date revision changes 24-may-2011 1 first issue. 06-sep-2012 2 updated dimension a1 max., b min. and l min. in ta b l e 3 .
HDMIULC6-4SC6Y 12/12 doc id 018879 rev 2 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by two authorized st representatives, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2012 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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