bidirectional tvsarray ? scottsd a l e division usb6 b1 w w w . mi c r o s e m i . c o m usb6 b1 descripti on appeara n c e t h is t r ansie n t vol t age suppressor (t vs) array is packaged in an so-8 config uratio n gi ving pr otectio n to 1 pair of bid i rection a l dat a li nes an d the vb us. it is desi gne d for u s e in ap plic atio ns w h er e prote c tion is req u ire d at the boar d l e vel from voltag e transi e nts caused b y electrostatic d i scharg e (esd) as define d in i e c 610 00- 4-2, electric al fast transients ( e ft ) per iec 6100 0-4-4 and e ffects of secondar y light nin g . t hese t vs arra y s hav e a pe ak po w e r r a tin g of 5 00 w a tts for an 8/20 sec pulse. t h is arra y is suitab le for prot ection of sens i t ive circuitr y c o nsistin g of univers a l seri a l bus (usb) i/o transceivers. t he capac it anc e bet w een t he i/o data lines are mi nim a l to ens ure no sig n ifica n t sig n a l distortio n or lo ss at th e 12 mega bit o r greater d a ta ra te. t h is feature allo w s fu ll com patib ilit y w i th u sb port standa rds. so?8 import a n t : f o r the most cur r e n t data, consult mi c r os e m i ? s w e bsite: http:// www .microsemi.com features a p p l i c at ions / be ne fi ts ? protects each data li ne b e t w e en vbus su pp l y a nd grou nd ? compl i es w i t h mil-st d-883,method 3 0 1 5 .7 ,class 3 ? surge pr otectio n per iec 61 00 0-4-2, iec 610 00-4- 4 ? provid es electr icall y is ol ated p r otection ? ul 94v- 0 f l am abil i t y c l ass i fic a tion ? low capacitance: 14 pf ( d ata+ or data- to gro u n d ) (ty pical) 7 p f (d ata+ to data-) (typical) ? eia-rs485 d a t a rates: 5 mbs ? 10 base t eth e rnet ? usb date rate: 900 mbs ? t ape & reel p e r eia standar d 481 ? 13 inc h reel; 2, 500 p i ec es (opt ional) ? carrier tu bes; 95 pcs (st a ndard) max i mu m rat ing s mechan ic al an d pa ckagin g ? operatin g t e mperatur e: -55 c to + 150c ? storage t e mperature: -55 c to + 150c ? peak puls e po w e r: 500 w a tts (8/20 s, f i gur e 1) ? pulse r epetiti o n rate: < .01% ? molded so-8 surface mount ? w e ight 0.06 6 g r ams (appr o x i m ate) ? marking: l ogo, device mark in g code, d a te code ? pin #1 d e fin ed b y dot on top o f package elec tric al ch ara cteri s tic s st and off volt age v wm volt s breakd o w n volt age v br @1 ma volt s cla m pi ng volt age v c @ 1 amp (figure 2 ) volt s cla m pi ng volt age v c @ 5 amp (figure 2 ) volt s st andb y current i d @ v wm a capacit ance (f=1 m hz) c @0v data + t o dat a - pf t e m per at ure coeffic i ent of v br vbr mv/c part nu m ber device m a rkin g ma x mi n ma x m a x m a x m a x ma x u s b 6 b 1 u s b 6 5 . 0 6 . 0 1 0 . 8 1 8 5 1 0 3 no te: transient volt age suppress or (t vs) product is no r m ally sel ected b a sed on its stan d of f voltag e v wm . pr od uct selected vo ltage shou ld b e equ a l to or g r eater th an t h e c ont i n u o u s pea k op erat i n g v o l t a ge o f t h e ci rcui t t o be protected. m i cro semi scottsdale division 8700 e. thom as rd. po bo x 139 0, scottsdale, az 85252 usa, ( 4 8 0 ) 941- 6300, fax: (480) 947-1 503 page 1 cop y right ? 200 3 03-06- 2003 re v h
bidirectional tvsarray ? m i cro semi scottsdale division 8700 e. thom as rd. po bo x 139 0, scottsdale, az 85252 usa, ( 4 8 0 ) 941- 6300, fax: (480) 947-1 503 page 2 cop y right 200 3 03-06- 2003 re v h w w w . mi c r o s e m i . c o m scottsd a l e division usb6 b1 usb6 b1 sy mbol s & defin i ti ons sy m b o l d e f i n i t i o n v wm stand off voltage: maximum dc volt age that can be applie d over the operat ing temperatur e range. v w m must b e selecte d to be equ al or b e gre a ter t han the o perati ng volt ag e of the lin e to be protecte d. v br minimum bre a k do w n v o lta g e : t he minimum voltage th e de vice w i l l e x h i bit at a specifie d current v c clamp in g volta ge: ma ximum c l ampi ng vo ltag e across the t vs device w h e n subj ected to a give n current at a puls e time of 20 s. i d standb y c u rre nt: leaka ge cu rrent at v wm . c cap a citanc e: cap a citanc e of the t vs as defined @ 0 vo lts at a frequenc y of 1 mhz and stated in pic o fa rads. graphs pp p peak pu lse po w e r (w ) 8/20s 5 0 0 w p ulse figure 1 figure 2 peak pu lse p o w e r vs pulse t i me t = sec pu lse w a v e f o rm o u t li ne an d s c he ma t i c pad layo ut i n c h e s m i llim e t e r s dim min m a x min m a x a 0 . 1 8 8 0 . 1 9 7 4 . 7 7 5 . 0 0 b 0 . 1 5 0 0 . 1 5 8 3 . 8 1 4 . 0 1 c 0 . 0 5 3 0 . 0 6 9 1 . 3 5 1 . 7 5 d 0 . 0 1 1 0 . 0 2 1 0 . 2 8 0 . 5 3 f 0 . 0 1 6 0 0 . 0 5 0 0 . 4 1 1 . 2 7 g 0.050 bsc 1.27 bsc j 0 . 0 0 6 0 . 0 1 0 0 . 1 5 0 . 2 5 k 0 . 0 0 4 0 . 0 0 8 0 . 1 0 0 . 2 0 l 0 . 1 8 9 0 . 2 0 6 4 . 8 0 5 . 2 3 p 0 . 2 2 8 0 . 2 4 4 5 . 7 9 6 . 1 9 outli ne schem a tic
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