apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 1 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d ? p r e c i s io n monito r in g o f + 2 .5v , +3 v , + 3 .3 v , a n d +5 v p o w er- s upp l y volta ges ? ful l y s p e c i f i e d o v e r te mp er at u r e ? a v a i l a ble in three o ut put co nfig uration s ? pu s h - p u l l reset a ctiv e l o w (apx 8 09) ? pu s h - p u l l rese t a c tiv e hi g h ( a p x 8 1 0 ) ? 20 0m s t y p p o we r - o n re s e t pul s e w i dt h ? 3 0 a s u pp l y cur r en t (ty p .) ? g uaran tee d rese t v a l i d to v cc = + 1 v ? n o ex terna l co m p on ent s ? s o t 23 and so t2 3r : av a i lab l e in ? g ree n? m olding co mp ou nd ( n o br , sb) ? l ea d f ree finish /ro h s c om plian t ( n ot e 1 ) t he ap x8 09 /810 are used for m i cr o p r ocesso r ( p ) su pe r v isor y c i r c ui t s t o m o ni t or t h e po w e r s up pl i es i n p a n d dig i t a l s y s t e m s . t hey prov id e e x cellen t circuit r e li a bil i t y an d low co st by elimin ating e x t er nal com pon ent s an d a djust men t s w hen used w i t h +5 v , +3.3v , + 3 .0v po wered cir c u i t s . t he s e circu i ts p erform a single fu nction : t hey assert a r e set signa l w he neve r t he v cc sup pl y voltag e de cl in es b elo w a p r e s et th r e shold, kee pi ng it a sserted fo r at le ast 240 ms a fte r v cc ha s ri se n ab o v e t h e r e set th r e shold . re set t h resho l d s suitab le for op eration w i th a v ariet y o f supp ly v o ltage s are av a i l a ble. t h e ap x 809 /8 1 0 h a ve push pu l l o utp u t s. th e a p x 80 9 h a v e an a cti v e low reset o u tpu t, w h il e th e a p x 8 10 ha s an a c t i v e hig h r eset o utp ut. t h e reset co mp arato r is de s i g ne d to ig nore f ast tran si e nts o n v cc , a nd the ou tp uts are gua rante ed to be i n th e corre c t lo gic sta t e f o r v cc d o w n to 1v . low s u pp ly cu r r e n t m a k e s th e apx 809 /810 i d ea l fo r use i n p ortab le equ ipm ent . t h e ap x 809 /8 1 0 is a v ail a ble i n a 3 - p i n s o t 2 3 a nd s o t 23r pa ckage s. ? comp ute r s ? c o n t rollers ? i n te l lige n t i n stru ment s ? c r iti ca l p and c p o w er m onito r i ng ? p ortab l e / b a tter y p owe red e quip m e nt ? a uto moti v e apx 8 xx - xx xx g - 7 vo l t ag e p a cka ge p a cking 7 : tape & reel enable green g : green sa : sot23 sr : sot2 3 r 46 : 4 . 6 3 44 : 4 . 3 8 40 : 4 . 0 0 31 : 3 . 08 29 : 2 . 93 26 : 2 . 6 3 23 : 2 . 2 5 09 : a ct i ve-l ow 10 : act i v e -h i g h devi ce pack ag e code p a ckaging (note 2) 7? tape a nd ree l qua n tity part number suffix apx809-xxsag - 7 sa so t2 3 3000 / tape & reel -7 APX810-xxsag - 7 sa so t2 3 3000 / tape & reel -7 apx809-xxsrg-7 sr s o t23 r 3000 / tape & reel -7 APX810-xxsrg-7 sr s o t23 r 3000 / tape & reel -7 not e s: 1. eu direc t i v e 2 002 / 9 5 / ec ( r ohs) . a ll appl ica b le rohs ex empt io ns app lie d . p l ease visit our w e b s i t e at h t t p :// w w w . di odes. c om/ pr oduc t s /l ead_ f r e e . h tml . 2. pad lay out a s sho w n on diode s in c . suggest e d p a d l a y ou t documen t a p 02 001, w hi c h c an b e f o un d o n our w e b s i t e a t h t t p :/ /www. diod es . c om / dat as h eet s / ap02001 . pdf . features general description applicat ions ordering information http://
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 2 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d ( top view ) 1 2 gn d v cc 2 3 ( r es et ) re set ( top view ) 1 2 gnd ( r es et ) v cc apx809 APX810 2 3 re set sot23r sot23 apx 809 apx 810 absolute maxi mum ratings symbol parameter rating unit esd hbm human body model esd protection 5 kv esd mm machine model esd protection 500 v v cc s u pp l y v o lt ag e -0. 3 t o +6 . 0 v v reset reset, reset (push-pull) -0.3 to (v cc + 0.3) v i cc input current, v cc 20 ma i o output current, reset, reset 20 ma p d c o nt i n u o us po we r d i s s i pa t i on ( t a = +70 c), de-r a t e 4mw / c a b o v e +70 c 400 mw t op operating junction temperature range -40 to +105 c t st storage temperature range -65 to +150 c p in a s sig nm en ts pin descriptions pin name description gnd ground reset ( r es et ) r e se t ou tp u t pin l : for a px8 09 h: for APX810 v cc ope r at in g volt a g e i n p u t
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 3 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d recommended oper ating conditions symbol parameter min max unit v cc sup p l y volt a ge 1. 1 5. 5 v v in in p u t vo lta g e 0 (v cc +0 .3 ) v t a o p e r at in g am b i e n t t e m p er at ur e r a n g e - 4 0 8 5 o c t r vc c ri s i n g t i m e ( v c c = 0~ v t ) 10 0 v/ us electrical char acter i stics (t a = 25 o c ) t a = -40 t o 85 o c u nl e s s ot he rw is e no te . t y pica l v a lu e s a r e a t t a =+25 o c. symbol parameter test conditions min typ. max unit v cc v cc ra nge t a = 0 o c t o +7 0 o c 1. 0 5 . 5 v i cc s u pply c ur r e n t v th + 0 . 2 v 30 40 a v th res et threshold ap x8 09 / 8 10 -2 3 t a = 0 o c-85 o c 2. 2 1 2 . 25 2 . 30 v apx 8 0 9 / 8 1 0 - 2 6 2. 5 9 2 . 63 2.69 apx 8 0 9 / 8 1 0 - 2 9 2. 8 8 2 . 93 3.00 apx 8 0 9 / 8 1 0 - 3 1 3. 0 2 3 . 08 3.15 apx 8 0 9 / 8 1 0 - 4 0 3. 9 3 4 . 00 4.08 apx 8 0 9 / 8 1 0 - 4 4 4. 3 1 4 . 38 4.47 apx 8 0 9 / 8 1 0 - 4 6 4. 5 6 4 . 63 4.72 ap x8 09 / 8 10 -2 3 t a = -40 o c-8 5 o c 2. 2 0 2 . 25 2 . 30 v apx 8 0 9 / 8 1 0 - 2 6 2. 5 7 2 . 63 2.69 apx 8 0 9 / 8 1 0 - 2 9 2. 8 6 2 . 93 3.00 apx 8 0 9 / 8 1 0 - 3 1 3. 0 0 3 . 08 3.15 apx 8 0 9 / 8 1 0 - 4 0 3. 9 2 4 . 00 4.08 apx 8 0 9 / 8 1 0 - 4 4 4. 2 9 4 . 38 4.47 apx 8 0 9 / 8 1 0 - 4 6 4. 5 4 4 . 63 4.72 res e t th res hold tem p c o 30 p p m/ o c t s s e t - up time v cc = v th to ( v th ? 1 00mv ) 20 s t delay r e se t a c t i ve time ou t pe rio d t a = 0 o c t o +8 5 o c 1 4 0 200 280 ms v ol t rese o u t p ut v o lt ag e l o w (a px809) v cc = v th -0 . 2 , i si nk = 1. 2ma 0. 3 v v cc = v th - 0 .2 , i si nk = 3. 2ma 0. 4 v cc > 1. 0v , i si n k = 50u a 0 . 3 v oh t rese out pu t volt a ge-hi gh (a px809) v cc > v th +0.2, i so urce = 5 0 0ua 0. 8 v cc v v cc > v th +0.2, i so urce = 8 00ua v cc ?1.5 v ol r e se t o u t p u t v o l t ag e- lo w (a px810) v cc = v th +0.2, i si n k = 1. 2ma 0 . 3 v v cc = v th +0.2, i si n k = 3. 2ma 0 . 4 v oh re se t out p ut vo lt a g e - high (a px810) 1. 8v < v cc < v th -0 .2 , i so urce = 1 50ua 0. 8 v cc v ja th e r ma l r e sista n ce j unc t i o n -t o-ambie n t s ot2 3/s ot23 r (n o t e 3) 201 o c/ w jc t he r m al r es i s t an c e j unc t i o n-t o-c a s e s ot2 3/s ot23 r (n o t e 3) 56 o c/ w not e s : 3 . te s t c ondi t i on f or sot 23/ sot 23r: de v i c es mount ed on f r - 4 subst r a t e pc b oar d , 2oz c o pper , w i t h minimum r ec ommen d e d pad l ay out .
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 4 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d typical applicat ion circuit apx 8 x x gnd reset (reset) v cc microprocessor v cc gnd reset input v cc c in 100 nf functional description a m i cr o proce s so r ?s ( p ? s) r e set i n put starts t he p in a know n stat e. th e apx 8 09 / 81 0 assert r e set to pre v en t c o de - ex ecutio n erro rs du r i n g p ow er-up, powe r- d ow n, or b r ow n o u t co ndition s. t hey assert a re set si g nal w h enev er th e v cc s u ppl y v o ltage de cl in es b elow a preset thre sh old , keep i n g it as ser t ed fo r at le ast 24 0m s aft er v cc h as r i sen ab o v e t he r e set t hresho l d. t h e apx 809 /8 1 0 h a ve a p ush-pu l l outp ut stag e. e n su ring a v al i d r ese t outp u t dow n t o v cc = 0 reset is gu aran tee d to be a l o gic low for v cc > 1 v . once v cc e x ce eds the r e se t thresh old, an i n terna l time r keep s reset low for the reset timeout period; after this interval, reset go es hig h. if a brow no ut cond i t i o n o ccurs ( v cc dips b e low th e reset reset threshold), reset goe s lo w . a n y tim e v cc goe s be l o w the reset thresh old, the inte r n al time r r e sets t o zero, an d reset g oes low . t he int ernal time r starts a fter v cc r et u r n s a bo ve t h e r e s et t hr es h ol d, an d reset rem a ins low for th e rese t t i meo u t p e ri o d . when v cc falls below 1v, the apx809 reset ou t pu t no long er si n ks cu rren t ?i t b eco mes a n ope n cir c u i t . th erefo r e , high-impedance cmos logic inputs connected to reset c an drif t to un de termine d v o l t ag e s . this presents no problem in most applications since most p and other circuitry is inoperative with v cc below 1v. however, in applications where reset must be valid down to 0v, adding a pull down resistor to reset causes any stray leakage currents to flow to ground, holding reset low. r1?s value is not critical; 100k are large enough not to load reset and small enough to pull reset to groun d . f o r the a p x 810 if reset is r e qu ired to rem a in v a l i d fo r v cc < 1 v . b en efits o f h i g h l y a c cura te r eset t h r e sho l d m ost p su per v i sor ics ha s r e set thresh old v olt a ges b et w e e n 5% and 10% b el ow th e v alue of no mina l sup pl y v olta ge s . t his en sures a r e set w i l l n ot o ccur w i t h in 5% of the nom i n al sup pl y , b ut w i l l o c c ur w h en t he s u pp l y i s 10 % be l o w n om i n al . w he n us i ng i c s r at e d at o nl y t he n om i n al s upp l y 5 %, t h i s l e ave s a z on e of un certaint y wh ere th e sup pl y is bet we en 5% an d 10 % lo w , and w h ere the r e set may or may no t be asse r t ed.
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 5 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d v ref delay circuit drive r reset / reset block diagr am
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 6 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d performance characteristics r e s e t ti m e out p e r i o d v s . t e m p e r a t u r e 150 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 - 40 - 25 0 25 50 8 5 105 125 t em p er at u r e r e s e t ti m e out p e r i od ( m s ) r e s e t t hre s hol d v ol t a g e v s . te m pe r a t ur e 2.8 2. 85 2. 9 2. 95 3 3. 05 3. 1 3. 15 3. 2 - 40 - 25 0 25 50 85 1 05 125 t em p er at u r e r eset t h e r s h o l d vo l t a g e ( v) figure 1 figure 2 v c c s u pp l y c u rre nt v s . t e m p e r a t ure ( v c c =3 .3 v vt h = 2 . 9 3 v) 25 26 27 28 29 30 31 32 33 34 35 - 4 0 - 25 0 25 50 85 105 125 te m pe r a t ur e vc c su p p ly c u r r e n t ( u a ) su pp ly cu rren t v s . vcc 0 5 10 15 20 25 30 35 40 1 . 5 v 2.5 v 3 . 3v 4 . 0v 5.0 v 5.5 v vcc supply c u rrent (ua) figure 3 figure 4
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 7 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d timing diagram vt h vth /reset reset t de la y t de la y t de la y t de la y vcc vt h
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 8 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d marking information ( 1 ) so t 2 3 / so t 2 3 r 1 2 3 xx y w x ( top v i ew ) xx : id e n ti fic a t i o n c o d e w : we ek : a~z : 1 ~ 26 week ; x : a~z : green y : year 0 ~9 a~z : 27~52 week; z rep r esents 52 and 53 week device package identification code apx809-46 s a s ot23 x2 apx809-44 s a s ot2 3 x3 apx809-40 s a s ot2 3 x4 apx809-31 s a s ot2 3 x5 apx809-29 s a s ot2 3 x6 apx809-26 s a s ot2 3 x7 apx809-23 s a s ot2 3 x8 APX810-46 s a s ot2 3 xa APX810-44 s a s ot2 3 xb APX810-40 s a s ot2 3 xc APX810-31 s a s ot2 3 xd APX810-29 s a s ot2 3 xe APX810-26 s a s ot2 3 xf APX810-23 s a s ot2 3 xg apx809- 4 6 s r so t23r y2 apx809- 4 4 s r so t23r y3 apx809- 4 0 s r so t23r y4 apx809- 3 1 s r so t23r y5 apx809- 2 9 s r so t23r y6 apx809- 2 6 s r so t23r y7 apx809- 2 3 s r so t23r y8 APX810- 4 6 s r so t23r ya APX810- 4 4 s r so t23r yb APX810- 4 0 s r so t23r yc APX810- 3 1 s r so t23r yd APX810- 2 9 s r so t23r ye APX810- 2 6 s r so t23r yf APX810- 2 3 s r so t23r yg
apx809/810 3-pin micr oproc essor re s e t c i r c u i ts apx809/ 810 rev. 4 9 of 9 f ebruary 20 09 ww w . d i ode s.com ? di odes i ncor porat e d package information (all dime nsions in mm) (1) p a ckage t y p e : sot23 / so t23r not es: 4. pack ag e ou t l ine di me ns ions as s how n on di odes i nc . pack age out l i ne d i men s i ons doc u m en t ap020 0 2, w hi c h c an be f ou n d o n o u r w e b s i t e a t h t t p :/ /www. diod es . c om / d a t as h eet s / ap02002 . pdf i m po r t an t no ti ce l i fe su ppo r t d i odes i n c o rp orat ed a nd i t s s ubs i d ia ries res e r v e t h e righ t t o m a k e m odif i c a t i on s , enh a n c e m e nt s , i m prov em en ts , c o rr ec t i o n s or ot h e r c h a n ges w i t hout f u rt he r n o t i c e t o any p r o duc t herei n . d i o d es i n c o rpora t ed do e s not as s u m e an y liability ar is i n g ou t of t h e ap plic at io n o r us e o f any p r o duc t des c r ibed h e rein ; neit he r d o e s it c o n v ey any lic e n s e u nder it s pa t e n t righ t s , no r t he rig h t s of ot her s . t he u s er of p r odu c t s in s u c h ap plic at ions s h all a s s um e a ll ris k s of s u c h us e and w i ll a g r ee t o hold d i ode s i n c o rp o r at ed a nd a ll t h e c o m pan ie s w h os e pr oduc t s are re p r es en t ed on o u r w e bs it e , h a rm les s ag a i ns t a ll dam ages . d i odes i n c o r p orat ed prod u c t s a r e not au t h o r iz e d f o r u s e as c r it ic a l c o m p o n ent s in lif e s u p por t de v i c e s or s y s t em s w i t h o u t t h e e x p r e s s ed w r it t e n a pprov a l of t h e p r e s ide n t of d i od es i n c o rpo r a t ed .
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