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  ? semiconductor components industries, llc, 2010 october, 2010 ? rev. 3 1 publication order number: nlsx4378/d nlsx4378 4-bit 20 mb/s dual-supply level translator the nlsx4378 is a 4 ? bit configurable dual ? supply bidirectional auto sensing translator that does not require a directional control pin. the v cc i/o and v l i/o ports are designed to track two different power supply rails, v cc and v l respectively. the v cc supply rail is configurable from 1.65 v to 5.5 v while v l supply rail is configurable to 1.65 v to 5.5 v. this allows voltage logic signals on the v l side to be translated into lower, higher or equal value voltage logic signals on the v cc side, and vice ? versa. the nlsx4378 translator has open ? drain outputs with integrated 10 k  pullup resistors on the i/o lines. the integrated pullup resistors are used to pullup the i/o lines to either v l or v cc . the nlsx4378 is an excellent match for open ? drain applications such as the i 2 c communication bus. features ? v l can be less than, greater than or equal to v cc ? wide v cc operating range: 1.65 v to 5.5 v wide v l operating range: 1.65 v to 5.5 v ? high ? speed with 20 mb/s guaranteed date rate ? low bit ? to ? bit skew ? enable input and i/o lines have overvoltage tolerant (ovt) to 5.5 v ? nonpreferential powerup sequencing ? integrated 10 k  pullup resistors ? small space saving package ? 2.02 x 1.54 mm  bump12 ? this is a pb ? free device typical applications ? i 2 c, smbus, pmbus ? low voltage asic level translation ? mobile phones, pdas, cameras marking diagram http://onsemi.com  bump12 fc suffix case 499au x = f ? standard b ? backcoated a = assembly location y = year ww = work week  = pb ? free package s4378x ayww  v l v cc gnd en i/o v l 1 i/o v l 2 i/o v l 3 i/o v l 4 i/o v cc 1 i/o v cc 2 i/o v cc 3 i/o v cc 4 logic diagram see detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. ordering information
nlsx4378 http://onsemi.com 2 figure 1. block diagram (1 i/o line) pu1 r pullup 10 k  v l i/o v l i/o v cc v cc one ? shot block one ? shot block pu2 gate bias n r pullup 10 k  pin assignment pins description v cc v cc input v oltage v l v l input v oltage gnd ground en output enable i/o v cc n v cc i/o port, referenced to v cc i/o v l n v l i/o port, referenced to v l function table en operating mode l hi ? z h i/o buses connected pin location pin pin name a1 i/o v l 1 a2 i/o v l 2 a3 i/o v l 3 a4 i/o vl4 b1 v cc b2 v l b3 en b4 gnd c1 i/o v cc 1 c2 i/o v cc 2 c3 i/o v cc 3 c4 i/o v cc 4 (2.02 x 1.54 mm) (bottom v iew)  bump12 ab c 4 3 2 1 v cc v l en gnd i/o v cc 1 i/o v cc 2 i/o v cc 3 i/o v cc 4 i/o v l 1 i/o v l 2 i/o v l 3 i/o v l 4
nlsx4378 http://onsemi.com 3 maximum ratings symbol parameter condition value unit v cc high ? side dc supply v oltage ? 0.3 to +7.0 v v l high ? side dc supply v oltage ? 0.3 to +7.0 v i/o v cc v cc ? referenced dc input/output v oltage ? 0.3 to (v cc + 0.3) v i/o v l v l ? referenced dc input/output v oltage ? 0.3 to (v l + 0.3) v v en enable control pin dc input v oltage ? 0.3 to +7.0 v i i/o_sc short ? circuit duration (i/o v l and i/o v cc to gnd) continuous 40 ma t stg storage t emperature ? 65 to +150 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. recommended opera ting conditions symbol parameter min max unit v cc high ? side positive dc supply voltage 1.65 5.5 v v l high ? side positive dc supply v oltage 1.65 5.5 v v en enable control pin v oltage gnd 5.5 v v io enable control pin v oltage gnd 5.5 v t a operating temperature range ? 40 +85 c dc electrical characteristics (v cc = 1.65 v to 5.5 v and v l = 1.65 v to 5.5 v, unless otherwise specified) symbol parameter test conditions ? 40  c to +85  c unit min typ (notes 1, 2) max v ihc i/o v cc input high voltage v cc ? 0.4 ? ? v v ilc i/o v cc input low v oltage ? ? 0.15 v v ihl i/o v l input high voltage v l ? 0.4 ? ? v v ill i/o v l input low v oltage ? ? 0.15 v v ih control pin input high v oltage 0.65 * v l ? ? v v il control pin input low v oltage ? ? 0.35 * v l v v ohc i/o v cc output high voltage i/o v cc source current = 20  a 0.8 * v cc ? ? v v olc i/o v cc output low voltage i/o v cc sink current = 1.0 ma i/o_v l 0.15 v ? ? 0.4 v v ohl i/o v l output high voltage i/o v l source current = 20  a 0.8 * v l ? ? v v oll i/o v l output low voltage i/o v l sink current = 1.0 ma i/o_v cc 0.15 v ? ? 0.4 v i qvcc v cc supply current i/o v cc and i/o v l unconnected, v en = v l ? 0.5 2.0  a i qvl v l supply current i/o v cc and i/o v l unconnected, v en = v l ? 0.3 1.0  a i ts ? vcc v cc tristate output mode supply current i/o v cc and i/o v l unconnected, v en = gnd ? 0.1 1.0  a i ts ? vl v l tristate output mode supply current i/o v cc and i/o v l unconnected, v en = gnd ? 0.1 1.0  a i oz i/o tristate output mode leakage current t a = +25 c ? 0.1 1.0  a r pu pullup resistor i/o v l and v cc t a = +25 c ? 10 ? k  1. typical values are for v cc = +2.8 v, v l = +1.8 v and t a = +25 c. 2. all units are production tested at t a = +25 c. limits over the operating temperature range are guaranteed by design.
nlsx4378 http://onsemi.com 4 timing characteristics ? rail ? to ? rail driving c onfigurations (i/o test circuit of figures 2 and 3, c load = 15 pf, driver output impedance  50  , r load = 1 m  ) symbol parameter test conditions ? 40  c to +85  c (note 3) unit min typ max v l = 1.65 v, v cc = 5.5 v t rvcc i/o v cc risetime 15 ns t fvcc i/o v cc falltime 20 ns t rvl i/o v l risetime 30 ns t fvl i/o v l falltime 10 ns t pdvl ? vcc propagation delay (driving i/o v l ) 20 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 20 ns t ppskew part ? to ? part skew 5 ns mdr maximum data rate 20 mb/s v l = 1.8 v, v cc = 2.8 v t rvcc i/o v cc risetime 15 ns t fvcc i/o v cc falltime 15 ns t rvl i/o v l risetime 25 ns t fvl i/o v l falltime 10 ns t pdvl ? vcc propagation delay (driving i/o v l ) 15 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 15 ns t ppskew part ? to ? part skew 5 ns mdr maximum data rate 20 mb/s v l = 2.5 v, v cc = 3.6 v t rvcc i/o v cc risetime 15 ns t fvcc i/o v cc falltime 10 ns t rvl i/o v l risetime 15 ns t fvl i/o v l falltime 10 ns t pdvl ? vcc propagation delay (driving i/o v l ) 15 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 15 ns t ppskew part ? to ? part skew 5 ns mdr maximum data rate 20 mb/s v l = 2.8 v, v cc = 1.8 v t rvcc i/o v cc risetime 25 ns t fvcc i/o v cc falltime 10 ns t rvl i/o v l risetime 20 ns t fvl i/o v l falltime 15 ns t pdvl ? vcc propagation delay (driving i/o v l ) 15 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 15 ns t ppskew part ? to ? part skew 5 ns mdr maximum data rate 20 mb/s 3. all units are production tested at t a = +25 c. limits over the operating temperature range are guaranteed by design.
nlsx4378 http://onsemi.com 5 timing characteristics ? rail ? to ? rail driving c onfigurations (i/o test circuit of figures 2 and 3, c load = 15 pf, driver output impedance  50  , r load = 1 m  ) symbol unit ? 40  c to +85  c (note 3) test conditions parameter symbol unit max typ min test conditions parameter v l = 3.6 v, v cc = 2.5 v t rvcc i/o v cc risetime 15 ns t fvcc i/o v cc falltime 10 ns t rvl i/o v l risetime 15 ns t fvl i/o v l falltime 15 ns t pdvl ? vcc propagation delay (driving i/o v l ) 15 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 15 ns t ppskew part ? to ? part skew 5 ns mdr maximum data rate 20 mb/s v l = 5.5 v, v cc = 1.65 v t rvcc i/o v cc risetime 30 ns t fvcc i/o v cc falltime 10 ns t rvl i/o v l risetime 15 ns t fvl i/o v l falltime 20 ns t pdvl ? vcc propagation delay (driving i/o v l ) 20 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 20 ns t ppskew part ? to ? part skew 5 ns mdr maximum data rate 20 mb/s 3. all units are production tested at t a = +25 c. limits over the operating temperature range are guaranteed by design. timing characteristics ? open drain driving configurations (i/o test circuit of figures 4 and 5, c load = 15 pf, driver output impedance  50  , r load = 1 m  ) symbol parameter test conditions ? 40  c to +85  c (note 4) unit min typ max +1.65  v l , v cc  +5.5 v t rvcc i/o v cc risetime 400 ns t fvcc i/o v cc falltime 50 ns t rvl i/o v l risetime 400 ns t fvl i/o v l falltime 60 ns t pdvl ? vcc propagation delay (driving i/o v l ) 1000 ns t pdvcc ? vl propagation delay (driving i/o v cc ) 1000 ns t ppskew part ? to ? part skew 50 ns mdr maximum data rate 2 mb/s 4. all units are production tested at t a = +25 c. limits over the operating temperature range are guaranteed by design. limits over the operating temperature range are guaranteed by design.
nlsx4378 http://onsemi.com 6 test setups nlsx4378 en i/o v l v l v cc c load t rise/fall  3 ns i/o v l i/o v cc t pd_vl ? vcc 90% 50% 10% 90% 50% 10% t pd_vl ? vcc t f ? vcc t r ? vcc figure 2. rail ? to ? rail driving i/o v l i/o v cc nlsx4378 en i/o v l v l v cc c load source t rise/fall  3 ns i/o v cc i/o v l t pd_vcc ? vl 90% 50% 10% 90% 50% 10% t pd_vcc ? vl t f ? vl t r ? vl i/o v cc source figure 3. rail ? to ? rail driving i/o v cc nlsx4378 en i/o v l v l v cc figure 4. open ? drain driving i/o v l i/o v cc nlsx4378 en v l v cc i/o v cc figure 5. open ? drain driving i/o v cc figure 6. definition of timing specification parameters c load v cc c load r load r load r load r load
nlsx4378 http://onsemi.com 7 open pulse generator r t dut v cc r l r 1 c l 2xv cc test switch t pzh , t phz open t pzl , t plz 2 x v cc c l = 15 pf or equivalent (includes jig and probe capacitance) r l = r 1 = 50 k  or equivalent r t = z out of pulse generator (typically 50  ) figure 7. test circuit for enable/disable time measurement v cc gnd t f t r 10% 50% 90% 10% 50% 90% t r t plh t phl t f 50% 50% 90% 10% t pzl t plz t pzh t phz gnd high impedance v ol v oh high impedance figure 8. timing definitions for propagation delays and enable/disable measurement en input 50% v l output output output
nlsx4378 http://onsemi.com 8 applications information level translator architecture the nlsx4378 auto sense translator provides bi ? directional voltage level shifting to transfer data in multiple supply voltage systems. this device has two supply voltages, v l and v cc , which set the logic levels on the input and output sides of the translator. when used to transfer data from the v l to the v cc ports, input signals referenced to the v l supply are translated to output signals with a logic level matched to v cc . in a similar manner, the v cc to v l translation shifts input signals with a logic level compatible to v cc to an output signal matched to v l . the nlsx4378 consists of two bi ? directional channels that independently determine the direction of the data flow without requiring a directional pin. the one ? shot circuits are used to detect the rising or falling input signals. in addition, the one shots decrease the rise and fall time of the output signal for high ? to ? low and low ? to ? high transitions. each input/output channel has an internal 10 k  pull. the magnitude of the pullup resistors can be reduced by connecting external resistors in parallel to the internal 10 k  resistors. input driver requirements the rise (t r ) and fall (t f ) timing parameters of the open drain outputs depend on the magnitude of the pull ? up resistors. in addition, the propagation times (t pd ), skew (t pskew ) and maximum data rate depend on the impedance of the device that is connected to the translator. the timing parameters listed in the data sheet assume that the output impedance of the drivers connected to the translator is less than 50 k  . enable input (en) the nlsx4378 has an enable pin (en) that provides tri ? state operation at the i/o pins. driving the enable pin to a low logic level minimizes the power consumption of the device and drives the i/o v cc and i/o v l pins to a high impedance state. normal translation operation occurs when the en pin is equal to a logic high signal. the en pin is referenced to the v l supply and has overvoltage tolerant (ovt) protection. power supply guidelines during normal operation, supply voltage v l can be greater than, less than or equal to v cc . the sequencing of the power supplies will not damage the device during the power up operation. for optimal performance, 0.01  f to 0.1  f decoupling capacitors should be used on the v l and v cc power supply pins. ceramic capacitors are a good design choice to filter and bypass any noise signals on the voltage lines to the ground plane of the pcb. the noise immunity will be maximized by placing the capacitors as close as possible to the supply and ground pins, along with minimizing the pcb connection traces. ordering information device package shipping ? NLSX4378FCT1G  bump12 (pb ? free) 3000 / tape & reel nlsx4378bfct1g  bump12 (backside laminate coating) (pb ? free) 3000 / tape & reel ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd801 1/d.
nlsx4378 http://onsemi.com 9 package dimensions  bump12, 2.02x1.54, 0.5p case 499au ? 01 issue o seating plane 0.10 c notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. coplanarity applies to spherical crowns of solder balls. 2x dim a min max ??? millimeters a1 a2 d 2.02 bsc e1 b 0.29 0.34 e 0.50 bsc 0.66 a b pin a1 reference a 0.05 b c 0.03 c 0.05 c 12x b 1234 c b a 0.10 c a a1 a2 c 0.21 0.27 1.00 bsc e d e/2 e 0.10 c 2x 12x note 3 top view side view bottom view 0.33 0.39 d1 e1 e 1.54 bsc d1 1.50 bsc on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, in cluding without limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different a pplications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical e xperts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc prod uct could create a s ituation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indem nify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney f ees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was neglig ent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 nlsx4378/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your loc a sales representative


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