a1 a2 a3 a4 1o e 1 48 24 25 2y 1 gn d 2a 3 2a 4 3a 1 3a 2 3y 4 4y 3 3y 3 gn d 3y 2 3y 1 2y 4 2y 3 gn d 2y 2 gn d 4y 4 4a 3 4a 4 3o e 4o e gn d 3a 3 3a 4 v cc 4a 1 4a 2 gn d 1a 2 1a 1 2o e 4y 2 4y 1 v cc 1a 3 1a 4 v cc 2a 1 2a 2 gn d 1y 1 1y 2 gn d 1y 3 1y 4 v cc 54lvth162244 is a 16-bit buffer and line driver designed for low voltage operation with the ca pability to interface with a ttl environmen t. these devices can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. th ese device s provide true outputs and symme trical active-low output- enable (oe) inp u ts. the outputs which are desig ned to source or sink u p to 12ma, inclu de equivalent 22 ohm series resistors to reduce overshoot an d undershoot. active bus- hold circuitry ho lds unused or undriven inputs at a valid log i c state. use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. dpaci incorporates radiation pa ckage shie lding when required (based upon orbit requirements). ? mixed-mode sig nal operation. (5v input/output with 3.3v supply). ? total dose hardness:typica l 100 krad (si), de pending upon sp ace environment ? output ports have equivalent 22 ohm series resistors. external resistors not required. ? unregulated battery operation down to 2.7v ? typical v ol p (out put ground bounce) <0.8v at vcc= 3. 3v, t a =25c. ? hot insertion su pported. ? bus hold on dat a inputs elim inat es the need for external pullup/p u lldown resistors. ? distributed vcc and gnd pins m i nimize h i gh spe ed switching noise. ? flow-th r ough architecture optimizes pcb layout ? package: 48 pin flat pack shielded or unsh i elded package. features general descri p tion 54lvth162244 16-bit buffer/driver with 3-state outputs logi c dia g ra m oe y1 y2 y3 y4 dpaci 2251 ward ave. , simi valley, ca 93065 phone: (805) 581-9200 fax: (805) 581-9790 websit e: www.dpaci.com 54lvth 162244 dpaci dpaci page 1 all d a ta s h eets are s u b j ect to cha n ge with o u t notic e 5 4 l v t h1 6224 4 r e v . n / r
54lvth162244 16-bit buffer/driver with 3-state outputs dpaci absolut e maximum ratings 1 p a r a m e t e r s y m b o l m i n m a x u n i t supply volt age rang e v cc -0. 5 4 . 6 v i nput volt age range (see not e 2) v i -0. 5 7 . 0 v volt age range applied t o any out put in t he high impedance or power-of f st a t e (see not e 2 ) v o -0. 5 7 . 0 v volt age range applied t o any out put in t he high st at e (see not e 2) v o - 0 . 5 v cc +. 05 v current int o any out put in t he low st a t e i o - - 3 0 m a current int o any out put in t he high st at e ( see not e 3) i o - - 3 0 m a i nput clamp current i ik (v i < 0 ) - - - 5 0 m a out put clamp current i ok (v o < 0 ) - - - 5 0 m a st orage t e mperat ure range t s - 6 5 1 5 0 c operat ing t e mperat u r e range t a - 5 5 1 2 5 c recommended operating conditions 4 p a r a m e t e r s y m b o l m i n m a x u n i t supply volt age v cc 2. 7 3 . 6 v high-level input volt a ge v ih 2 - - v low-level input volt a ge v il - - 0 . 8 v i nput volt age v i - - 5 . 5 v high-level out put current i oh - - - 1 2 m a low level out put current i ol - - 1 2 m a i nput t r ansition rise o r f a ll ra t e ( out put s enabled ) ? t/ ? v - - 1 0 ns/ v power-up ramp rate ? t/ ? vcc 2 0 0 - - us/ v operat ing t e mperat u r e t a - 5 5 1 2 5 c 1. st resses beyond t hose list ed under "absolut e maximum rati ngs? may cause permanent damage t o the device. these are st ress rat i ngs only, a nd f unct i onal operat ion of t he device at t hese or any ot her condit i ons beyond t hose indicat ed under "recommended op erat ing condit i ons? is n o t implied. exposure t o absolut e-maximu m-rat ed condit i ons f o r ext ended periods may affec t dev ic e rel i ability . 2. the input and output negat ive-volt age rat i ngs may be exceeded if t he input and out put clamp-cu rrent rat i ngs are observed. 3. this current f l ows only when t he out put is in t he high st at e a nd v o > v cc. 4. all unused cont rol input s of t he devices must be held at v cc or gnd t o ensure proper device operat ion dpaci 2251 ward ave. , simi valley, ca 93065 phone: (805) 581-9200 fax: (805) 581-9790 websit e: www.d p aci. com all d a ta s h eets are s u b j ect to cha n ge with o u t notic e page 2 5 4 l v t h1 6224 4 r e v . n / r
dpaci 54lvth162244 16-bit buffer/driver with 3-state outputs dc el ect r i c a l cha ra cteri s t i cs 1 ( v cc=3.3v 10%,t a = - 55 to +1 25 c,c l =50pf ,unles s other w i s e s pec if ied ) min m ax unit v ik v cc = 2.7v i i = -18ma -- -1.2 v v oh v cc = 3v i oh = -12ma 2- - v v ol v cc = 3v i ol = 12ma -- 0.8 v cont r o l v cc = 0 or 3 . 6v , v i = 5.5 v -- 10 i i inp u ts v cc = 3.6v , v i = v cc or gnd -- 1 a dat a v cc = 3.6 v v cc -- 1 inp u ts v i = 0 -- -5 i i ( hold) dat a v cc = 3 v v i = 0.8 v 75 -- a inp u ts v i = 2 v -75 - - i oz h v cc = 3.6 v v o = 3 v -- 5 a i oz l v cc = 3.6 v v o = 0.5 v -- -5 a i oz pu 2 v cc = 1.5v to 0, v o = 0.5 v to 3 v , -- 100 a oe = do n't care -- i oz pd 2 v cc = 1.5v to 0, v o = 0.5 v to 3 v , -- 100 a oe = do n't care -- v cc = 3.6 v, outputs high -- 0.19 i cc i o = 0, outputs low - - 5 ma v i = v cc or gnd outputs disabled -- 0.19 ? i cc 1 v cc = 3 v to 3.6 v , one inp u t at v cc -0.6 v , 0.2 m a other in puts at v cc or gnd c i 2 v i = 3 v or 0 -- 8 p f c o 2 v o = 3 v or 0 -- 15 pf 1 : t h i s i s t he i n cr ease i n sup p l y cur r ent f o r each i nput t hat i s at t he s peci f i ed t t l v o l t ag e l e v e l r a t her t han v cc or gnd 2 : guar an t eed by desi gn param et er t est c o ndi t i o n s dpaci 2251 ward ave. , simi valley, ca 93065 phone: (805) 581-9200 fax: (805) 581-9790 websit e: www.d p aci. com all d a ta s h eets are s u b j ect to cha n ge with o u t notic e page 3 5 4 l v t h1 6224 4 r e v . n / r
54lvth162244 16-bit buffer/driver with 3-state outputs dpaci ac electri cal characteristics (vcc =3.3v 10%,t a = - 55 to +125 c,c l = 50 pf ,unles s other w i s e s pec if ied) param et er sym bo l v cc = 2.7 v unit min ma x ma x p r opogation delay time t plh 1.1 4 .6 5.1 n s a to y t ph l 1.1 3 .9 4.5 output e nable time t pz h 1.1 5 .4 6.7 n s oe to y t pz l 1.3 4 .9 6.1 output disable time t ph z 1.6 5 .9 6.5 n s oe to y t plz 15 . 9 5 . 8 v cc = 3.3 v function t able (each 4 - bit bu ffer) outp ut oe a y lh h ll l hx z inp u ts dpaci 2251 ward ave. , simi valley, ca 93065 phone: (805) 581-9200 fax: (805) 581-9790 websit e: www.d p aci. com page 4 all d a ta s h eets are s u b j ect to cha n ge with o u t notic e 5 4 l v t h1 6224 4 r e v . n / r
5 4 l v t h1 6224 4 r e v . n / r dpaci 2251 ward ave. , simi valley, ca 93065 phone: (805) 581-9200 fax: (805) 581-9790 websit e: www.d p aci. com page 5 all d a ta s h eets are s u b j ect to cha n ge with o u t notic e notes: a. c l includes probe a nd fixture capacitance. b. waveform 1 is for an output with internal conditions such t hat t he output is low except when disabled by the out put control. waveform 2 is for an output with internal conditions such that t he output is high except when disabled by the out put contro l. c. all input pulses are supplied by generator s having the following characteristics: prr 10 mhz. z o = 50 ? , t r 2.5 ns, t f 2.5 ns. d. the outputs are measured on e at a time with one transition pe r measurement. voltage wav e forms enable and disable times low- and high-level enabling voltage wav e forms propaga t ion delay times invertin g an d noninver ti ng ou tputs load circuit and voltage waveforms dpaci 54lvth162244 16-bit buffer/driver with 3-state outputs
p r e l i m i n a r y d 1 6 - b i t w i t h p a c i 6 2 4 5 b u s t r a n s c e i v e r 3 - s t a t e o u t p u t s 54lvth162244 16-bit buff e r/driver with 3-state output s dpaci dpaci 48 pin flat package note: all dimensions are in inches dpaci 2251 ward ave. , simi valley, ca 93065 phone: (805) 581-9200 fax: (805) 581-9790 websit e: www.d p aci. com page 6 all d a ta s h eets are s u b j ect to cha n ge with o u t notic e 5 4 l v t h1 6224 4 r e v . n / r
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