rev. 1.0 march 2010 www.aosmd.com page 1 of 8 AOZ8208 eight-line tvs diode array general description the AOZ8208 is a transient voltage suppressor diode array designed to protect data lines from high transient conditions and esd. this st ate-of-the-art device utilizes aos leading edge trench vertical structure [tvs] 2 ? technology for superior clamping performance. this device incorporates eight tvs diodes in a single package. during transient conditions, the tvs diodes direct the transient to ground. they may be used to meet the esd immunity requi rements of iec 61000-4-2, level 4 (15kv air, 8kv contact discharge). the AOZ8208 is rohs compliant. the dfn-8 package is rated over a -40c to +85c ambient temperature range. the very small dfn-8 1.8 x 1.2 x 0.55mm package makes it ideal for applications where pcb space is a premium. the small size and high esd protection makes it ideal for protecting high speed video and data communication interfaces. features z esd protection for high-speed data lines: ? exceeds: iec 61000-4-2 (esd) 15kv (air), 15kv (contact) ? iec61000-4-5 (lightning) 5a (8/20 s) ? human body model (hbm) 20kv z trench vertical structure [tvs] 2 ? based technology used to achieve excellent esd clamping performance z small package saves board space z low insertion loss z protects eight unidirectional i/o lines z low clamping voltage z low operating voltage: 5.0v z green product, pb-free applications z portable handheld devices z keypads, data lines z notebook computers z digital cameras z portable gps z mp3 players typical applications pin configuration i/o1 i/o2 i/o3 i/o4 i/o5 i/o6 i/o7 i/o8 top view unidirection protection of eight lines gnd 1 2 3 4 8 7 6 5
AOZ8208 rev. 1.0 march 2010 www.aosmd.com page 2 of 8 ordering information aos green products use reduced levels of halogens, and are also rohs compliant. please visit www.aosmd.com/web/qualit y/rohs_compliant.jsp for additional information. absolute maximum ratings exceeding the absolute maximum ratings may damage the device. notes: 1. iec 61000-4-2 discharge with c discharge = 150pf, r discharge = 330 ? . 2. human body discharge per mil-std-883, method 3015 c discharge = 100pf, r discharge = 1.5k ? . maximum operating ratings electrical characteristics t a = 25c unless otherwise specified. part number ambient temperature range package environmental AOZ8208di-05 -40c to +85c dfn-8 green product rohs compliant parameter rating peak pulse current (i pp ), t p = 8/20s 5a storage temperature (t s ) -65c to +150c esd rating per iec61000-4-2, contact (1) 15kv esd rating per iec61000-4-2, air (1) 15kv esd rating per human body model (2) 20kv parameter rating junction temperature (t j ) -40c to +125c symbol parameter diagram i pp maximum reverse peak pulse current v cl clamping voltage @ i pp v rwm working peak reverse voltage i r maximum reverse leakage current v br breakdown voltage i f forward current v f forward voltage p pk peak power dissipation c j capacitance @ v r = 0 and f = 1mhz device device marking v rwm (v) max. v br (v) min. i r (a) max. v f (v) typ. v cl max. c j (pf) typ. c j (pf) max. i pp = 1a i pp = 5a i pp = 12a AOZ8208di-05 d 5 6.0 0.1 0.85 7.0 8.0 9.0 10 12 i i f i r i t i pp v f v cl v br v rwm v
rev. 1.0 march 2010 www.aosmd.com page 3 of 8 AOZ8208 typical performance characteristics clamping voltage vs. peak pulse current (t period = 100ns, t r = 1ns) 10 8 6 4 2 0 peak pulse current, i pp (a) clamping voltage, v cl (v) i/o ? gnd insertion loss (s21) vs. frequency 5 0 -5 -10 -15 -20 -25 frequency (mhz) insertion loss (db) 1 10 100 1000 10000 typical variation of c in vs. v r (f = 1mhz, t = 25c) input voltage (v) normalized input capacitance 02 468 12 10 012345 1.20 1.00 0.80 0.60 0.40 0.20 0.00 forward voltage vs. forward current (t period = 100ns, t r = 1ns) 8 6 4 2 0 forward current (a) forware voltage (v) 02 468 12 10 crosstalk (i/o?i/o) vs. frequency 0 -20 -40 -60 -80 -100 -120 frequency (mhz) insertion loss (db) 1 10 100 1000 10000
rev. 1.0 march 2010 www.aosmd.com page 4 of 8 AOZ8208 gnd 8 7 6 5 4 3 2 1 i/o1 i/o2 i/o3 i/o4 i/o5 i/o6 i/o7 i/o8 protection of eight unidirection lines circuit diagram gnd 1 2 3 4 8 7 6 5 applications information device connection for protection of eight unidirectional data lines these devices are designed to protect up to eight unidirectional data lines. the device is connected as follows. z unidirectional protection of eight i/o lines is achieved by connecting pins 1 through 8 to the data lines. the ground connection should be made directly to the ground plane for best results. the path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. circuit board layout recommendations for suppression of esd good circuit board layout is critical for the suppression of esd induced transients. the following guidelines are recommended: z place the tvs near the input terminals or connectors to restrict transient coupling. z minimize the path length between the tvs and the protected line. z minimize all conductive loops including power and ground loops. z the esd transient return path to ground should be kept as short as possible. z never run critical signals near board edges. z use ground planes whenever possible.
rev. 1.0 march 2010 www.aosmd.com page 5 of 8 AOZ8208 package dimensions, dfn 1.8 x 1.2, 8l d e a1 0.20 0.40 0.30 0.20 0.20 0.20 0.20 1.00 1.00 0.30 0.20 a3 a l d2 b e d1 e1 pin 1 marking pin 1 id (c0.2x45 ) notes: 1. controlling dimension is millimeter, converted inch dimensions are not necessaily exact. 2. warpage shall not exceed 0.10mm. 3. marking is for package orientation reference only. symbols a a1 a3 b d d1 d2 e e1 e l dimensions in millimeters recommended land pattern side view top view bottom view min. 0.50 0.00 0.15 1.75 0.95 1.15 0.25 0.20 nom. 0.55 0.152 ref. 0.20 1.80 1.00 0.200 ref. 1.20 0.30 0.40 bsc 0.25 max. 0.60 0.05 0.25 1.85 1.05 1.25 0.35 0.30 symbols a a1 a3 b d d1 d2 e e1 e l dimensions in inches min. 0.020 0.000 0.006 0.069 0.037 0.045 0.010 0.008 nom. 0.022 0.006 ref. 0.008 0.071 0.039 0.008 ref. 0.047 0.012 0.016 bsc 0.010 max. 0.024 0.002 0.010 0.073 0.041 0.049 0.014 0.012
rev. 1.0 march 2010 www.aosmd.com page 6 of 8 AOZ8208 tape and reel dimensi ons, dfn 1.8 x 1.2, 8l carrier tape reel leader / trailer & orientation tape size 8mm reel size ?178 m ?178.0 1.0 package dfn 1.8x1.2 a0 1.32 0.05 b0 1.92 0.05 k0 0.75 0.05 d0 ?1.55 0.05 d1 ?0.55 0.05 e 8.00 +0.3/-0.1 e1 1.75 0.1 e2 3.50 0.05 p0 4.00 0.1 p1 4.0 0.1 p2 2.0 0.05 t 0.25 0.05 n ?60.0 1.0 trailer tape 300mm min. components tape orientation in pocket leader tape 500mm min. b0 t k0 p0 g r m n h k s w w1 p1 p2 d0 d1 e1 e e2 a0 ref. 5 unit: mm unit: mm feeding direction w 11.80 0.5 w1 9.0 0.5 h ?13.0 +0.5/-0.2 s 2.40 0.10 k 10.25 0.2 g ?9.8 r
AOZ8208 rev. 1.0 march 2010 www.aosmd.com page 7 of 8 package marking part number code assembly lot code w eek and year code AOZ8208di-05 (dfn 1.8 x 1.2, 8l) d
rev. 1.0 march 2010 www.aosmd.com page 8 of 8 AOZ8208 revision history revision revised item rev. 1.0 initial release as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provid ed in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. this data sheet contains preliminary data; supplementary data may be published at a later date. alpha & omega semiconductor reserves the right to make changes at any time without notice. life support policy alpha & omega semiconductor products ar e not authorized for use as critical components in life supp ort devices or systems.
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