november 2007 rev 2 1/8 8 itaxxu1 transil? array for data line protection features high surge capabilit y transil array: i pp = 40 a (8/20 s) peak pulse power : 300 w (8/20 s) up to 6 bidirectional transil functions low clamping factor (v cl / v br ) at high current level low leakage current esd protection up to 15 kv complies with the following standards iec 61000-4-2 level 4 ? 15 kv (air discharge) ? 8 kv (contact discharge) mil std 883g- method 3015-7: class 3b ? 25 kv (human body model) applications data transmission lines protection, such as: unipolar signal up to 5.5 v bipolar signal in the 2.5 v range description transil diode arrays provide high overvoltage protection by clamping action. their instantaneous response to transient overvoltages makes them particularly suited to protect voltage sensitive devices such as mos technology and low voltage supplied ic?s. the ita series allies high surge capability against energetic pulses with high voltage performance against esd. tm: transil is a trademar k of stmicroelectronics figure 1. functional diagram so-8 1 2 3 4 i/o1 i/o2 i/o3 i/o4 gnd gnd i/o5 i/o6 8 7 6 5 www.st.com
characteristics itaxxu1 2/8 1 characteristics table 1. absolute ratings (t amb = 25 c) symbol parameter value unit p pp peak pulse power (8/20 s) (1) 1. for surges greater than the specified maximum value, the i/o will first present a short-circuit and after an open circuit caused by the wire melting. t j initial = t amb 300 w i pp peak pulse current (8/20 s) (1) t j initial = t amb 40 a i 2 twire i 2 t value (1) 0.6 a 2 s t j maximum operating junction temperature 125 c t stg storage temperature range -55 to +150 c t l maximum lead temperature for soldering during 10 s 260 c table 2. electrical characteristics (t amb = 25 c) symbol parameter v rm stand-off voltage v br breakdown voltage v cl clamping voltage i rm leakage current i pp peak pulse current t voltage temperature coefficient v f forward voltage drop c capacitance order code v br @ i r i rm @ v rm v cl @ i pp v cl @ i pp tcv f @ i f min. max. max. 8/20 s max. 8/20 s max. max. max. (1) 1. between i/o pin and ground. (1) (1) (2) 2. between two input pins at 0 v bias, f = 1 mhz. vmaavvava10 -4 / c pf v a ita6v1u1 6.51 1 10 5 10 10 12 25 4 1500 1.3 1 v cl v br v rm v f i f i rm i pp i v
itaxxu1 characteristics 3/8 figure 2. pulse waveform figure 3. ty pical peak pulse power versus exponential pulse duration %i pp t 8s 100 50 0 20s pulse waveform 8/20s 1e-3 1e-2 1e-1 1e+0 1e+1 10 100 1000 p pp (w) t j initial=25c t p (ms) expo figure 4. clamping voltage versus peak pulse current (exponential waveform 8/20 s) figure 5. peak current i dc inducing open circuit of the wire for one input/output versus pulse duration (typical values) v cl (v) t j initial=25c i pp (a) 1e+00 1e+01 1e+02 1e+03 1e-01 1e+00 1e+01 1e+02 %i pp t r 100 50 0 t p t i dc (a) t p (ms) 1e+00 1e+01 1e+02 1e+03 1e-02 1e-01 1e+00 1e+01 exponential waveform figure 6. junction capacitance versus reverse applied voltage for one input/output (typical values) figure 7. relative variation of leakage current versus junction temperature 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 500 750 1000 1250 1500 c(pf) v r (v) t j =25c f=1mhz 5e+3 1e+3 1e+2 1e+1 0 25 50 75 100 125 150 1e+0 1e-1 t j (c) i r (t ) i (t =25c) j rj v r =v rm
application information itaxxu1 4/8 2 application information figure 8. p i/o lines figure 9. 2.5 v datalines gnd p interface i/o i/o i/o i/o i/o i/o +5v gnd line driver i/o i/o i/o i/o +2.5v -2.5v
itaxxu1 ordering information scheme 5/8 3 ordering information scheme figure 10. ordering information scheme ita 6v1 u 1 rl integrated transil array breakdown voltage (min) type of lines protected package packaging 25 = 25 volt u = unidirectional 1 = so-8 rl = tape & reel blank = tube
package information itaxxu1 6/8 4 package information epoxy meets ul94, v0 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. figure 11. so-8 footprint (dimensions in mm) table 3. so-8 dimensions ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.750.069 a1 0.1 0.25 0.004 0.010 a2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.009 d 4.80 4.90 5.00 0.189 0.193 0.197 e 5.80 6.00 6.20 0.228 0.236 0.244 e1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 l1 1.04 0.041 k0808 ccc 0.10 0.004 e1 d 8 4 1 5 e e a a2 b a1 ccc c k h x 45 l l1 c (seating plane) 0.25mm (gage plane) c 6.7 4.03 1.27 1.335 0.54
itaxxu1 ordering information 7/8 5 ordering information 6 revision history table 4. ordering information order code marking package weight base qty delivery mode ita6v1u1 6v1u1 so-8 0.08 g 2000 tube ita6v1u1rl 6v1u1 2500 tape and reel table 5. document revision history date revision changes 13-dec-2004 1 initial release. 07-nov-2007 2 reformatted to current standards. so-8 package dimensions update.
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