general description the max3370/max3371 logic-level translators are idealfor applications interfacing low-voltage devices to other logic levels. externally applied voltages set the logic levels of the max3370/max3371. the devices accept v cc from +2.5v to +5.5v and v l from +1.6v to +5.5v, allowing data transfer between low-voltage asics andhigher voltage devices. the max3371 features a shut- down mode that reduces supply current to < 1? and puts the i/o pins in a high-impedance state. the max3370/max3371 are bidirectional level shifters, allowing data transfer from the v cc side to the v l side and from the v l side to the v cc side. both devices operate at speeds up to 2mbps with an active driverand up to 500kbps with an open-drain driver. the max3370/max3371 are available in space-saving ?fn (1mm x 1.5mm) and sc70 packages. ________________________applications cell phone cradlescell phone hands-free kits portable pos systems portable communication devices smart card readers spi , microwire , and i 2 c level translation low-voltage asic level translationrs-232-compatible translation features ? allow bidirectional level translation ? miniature dfn (1mm x 1.5mm) and sc70 packages ? operational down to 1.6v ? low quiescent current (< 100 a) ? ultra-low (< 1 a) shutdown supply current (max3371) ? three-state outputs in shutdown (max3371) ? 2mbps (10pf load) push-pull driving ? 1mbps (50pf load) push-pull driving ? 500kbps (30pf load) open-drain driving max3370/max3371 ? 1a, 2mbps, low-voltage level translators in sc70 and dfn ___________________________________________________ _____________ maxim integrated products 1 gnd i/o v cc i/o v l 15 v cc v l max3370 5 sc70 top view 234 gnd i/o v cc i/o v l 16 v cc 5 shdn v l max3371 6 sc70 234 gnd i/o v cc i/o v l 16 v cc v l max3370 6 dfn (1mm x 1.5mm) 234 5 n.c. gnd i/o v cc i/o v l 16 v cc 5 shdn v l max3371 6 dfn (1mm x 1.5mm) 234 pin configurations data i/o v l i/o v cc 1.8v system controller +1.8v +3.3v 3.3v system v l shdn * v cc data gnd gnd * max3371 only gnd max3370 max3371 typical operating circuit 19-1847; rev 3; 5/09 ordering information spi is a trademark of motorola, inc. microwire is a trademark of national semiconductor corp. part* pin-package hdn top mark max3370 exk+t 5 sc70 no abv max3370elt+t 6 dfn no kx max3371 elt+t 6 dfn yes ky max3371ext+t 6 sc70 yes aao for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ? m. * all devices are specified over the -40? to +85? operating temperature range. + denotes lead(pb)-free/rohs-compliant package. downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn 2 __________________________________________________ _____________________________________ absolute maximum ratings electrical characteristics (v cc = +2.5v to +5.5v, v l = +1.6v to +5.5v (note 1), gnd = 0; i/o v l , i/o v cc unconnected; t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) (note 2) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc to gnd ..............................................................-0.3v to +7v shdn to gnd ...............................................-0.3v to (v l + 0.3v) i/o v l to gnd................................................-0.3v to (v l + 0.3v) v l , i/o v cc to gnd ...................................-0.3v to (v cc + 0.3v) short-circuit duration: i/o v l , i/o v cc to gnd..........continuous continuous power dissipation (t a = +70?) sc70 (derate 3.1mw/? above +70?) .......................245mw 6-pin ?fn (derate 2.1mw/? above +70?) ..............168mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? parameter symbol conditions min typ max units power supplies v l supply range v l (note 1) 1.6 5.5 v v cc supply range v cc 2.5 5.5 v supply current from v cc i qvcc 70 100 a supply current from v l i qvl 5 100 a v cc shutdown supply current hdn = gnd, t a = +25 c, max3371 0.03 1 a v l shutdown supply current hdn = gnd, t a = +25 c, max3371 0.03 1 a three-state output leakage current i/o v l , i/o v cc ; hdn = gnd, t a = +25 c, max3371 0.02 1 a logic level thresholds i/o v l input-voltage high threshold v ihl v l - 0.2 v i/o v l input-voltage low threshold v ill 0.15 v i/o v cc input-voltage high threshold v ihc v cc - 0.4 v i/o v cc input-voltage low threshold v ilc 0.2 v i/o v l output-voltage high v ohl i/o v l sink current = 20a, i/o v cc v cc - 0.4v (note 3) 2/3 v l v i/o v l output-voltage low v oll i/o v l sink current = 1ma, i/o v cc 0.2v (note 3) 0.4 v i/o v cc output-voltage high v ohc i/o v cc source current = 20a, i/o v l v l - 0.2v (note 3) 2/3 v cc v i/o v cc output-voltage low v olc i/o v cc sink current = 1ma, i/o v l 0.15v (note 3) 0.4 v hdn input-voltage high v ih-shdn 2/3 v l v v l +1.8v 0.4 hdn input-voltage low v il-shdn v l +1.6v 0.2 v downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn ___________________________________________________ ____________________________________ 3 electrical characteristics (continued) (v cc = +2.5v to +5.5v, v l = +1.6v to +5.5v (note 1), gnd = 0; i/o v l , i/o v cc unconnected; t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) (note 2) parameter symbol conditions min typ max units timing characteristics (r load = 1m , v cc = +2.5v, v l = +1.6v, i/o test signal rail-to-rail, unless otherwise noted, fig ure 1) (note 3) c load = 10pf, data rate = 2mbps (note 5) 100 c load = 50pf, data rate = 1mbps 200 i/o v cc rise time (note 4) t rvcc c load = 30pf, data rate = 500kbps, open-drain drive 400 ns c load = 10pf, data rate = 2mbps (note 5) 50 c load = 50pf, data rate = 1mbps 200 i/o v cc fall time (note 4) t fvcc c load = 30pf, data rate = 500kbps, open-drain drive 400 ns c load = 10pf, data rate = 2mbps (note 5) 100 c load = 50pf, data rate = 1mbps 200 i/o v l rise time (note 4) t rvl c load = 30pf, data rate = 500kbps, open-drain drive 400 ns c load = 10pf, data rate = 2mbps (note 5) 50 c load = 50pf, data rate = 1mbps 200 i/o v l fall time (note 4) t fvl c load = 30pf, data rate = 500kbps, open-drain drive 400 ns c load = 10pf, data rate = 2mbps (note 5) 50 c load = 50pf, data rate = 1mbps 200 high-to-low transit ion propagation dela y (driving i/o v l ) t pd-vcc-hl c load = 30pf, data rate = 500kbps, open-drain drive 400 ns c load = 10pf, data rate = 2mbps (note 5) 200 c load = 50pf, data rate = 1mbps 400 low-to-high transit ion propagation dela y (driving i/o v l ) t pd-vcc-lh c load = 30pf, data rate = 500kbps, open-drain drive 800 ns c load = 10pf, data rate = 2mbps (note 5) 50 c load = 50pf, data rate = 1mbps 200 high-to-low transit ion propagation dela y (driving i/o v cc ) t pd-vl-hl c load = 30pf, data rate = 500kbps, open-drain drive 400 ns c load = 10pf, data rate = 2mbps (note 5) 200 c load = 50pf, data rate = 1mbps 400 low-to-high transit ion propagation dela y (driving i/o v cc ) t pd-vl-lh c load = 30pf, data rate = 500kbps, open-drain drive 800 ns c load = 10pf, data rate = 2mbps (note 3) 2 c load = 50pf, data rate = 1mbps 4 high-to-low transit ion propagation dela y device-to-device skew (driving i/o v l ) c load = 30pf, data rate = 500kbps, open-drain drive 5 ns downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn 4 __________________________________________________ _____________________________________ note 1: v l must always be less than or equal to v cc . note 2: all units are 100% production tested at t a = +25?. limits over the operating temperature range are guaranteed by design and not production tested. note 3: tested only at worst case: v cc = +2.5v, v l = +1.6v. note 4: 10% to 90%. note 5: guaranteed by correlation to c load = 50pf. electrical characteristics (continued) (v cc = +2.5v to +5.5v, v l = +1.6v to +5.5v (note 1), gnd = 0; i/o v l , i/o v cc unconnected; t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) (note 2) parameter symbol conditions min typ max units c load = 10pf, data rate = 2mbps (note 3) 5 c load = 50pf, data rate = 1mbps 8 low-to-high transit ion propagation dela y device-to-device skew (driving i/o v l ) c load = 30pf, data rate = 500kbps, open-drain drive 80 ns c load = 10pf, data rate = 2mbps (note 3) 2 c load = 50pf, data rate = 1mbps 4 high-to-low transit ion propagation dela y device-to-device skew (driving i/o v cc ) c load = 30pf, data rate = 500kbps, open-drain drive 5 ns c load = 10pf, data rate = 2mbps (note 3) 7 c load = 50pf, data rate = 1mbps 8 low-to-high transit ion propagation dela y device-to-device skew (driving i/o v cc ) c load = 30pf, data rate = 500kbps, open-drain drive 50 ns c load = 10pf (note 5) 2 3 c load = 50pf 1 2 maximum data rate c load = 30pf, open-drain drive 0.5 1 mbps downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn ___________________________________________________ ____________________________________ 5 +2.5v +1.6v gnd i/o v l i/o v l i/o v cc i/o v cc v l v cc t pd-vcc-lh t pd-vcc-hl max3370max3371 t rvcc t fvcc data c load r load t rise, t fall 10ns +2.5v +1.6v gnd i/o v l i/o v cc i/o v l i/o v cc v l v cc t pd-vl-lh t pd-vl-hl max3370max3371 t rvl t fvl data r load c load t rise, t fall 10ns +2.5v +1.6v gnd i/o v l i/o v l i/o v cc i/o v cc v l v cc t pd-vcc-lh t pd-vcc-hl max3370max3371 t rvcc t fvcc data c load r load t rise, t fall 10ns +2.5v +1.6v gnd i/o v l i/o v cc i/o v l i/o v cc v l v cc t pd-vl-lh t pd-vl-hl max3370max3371 t rvl t fvl data r load c load t rise, t fall 10ns figure 1a. rail-to-rail driving i/o v l figure 1b. rail-to-rail driving i/o v cc figure 1c. open-drain driving i/o v l figure 1d. open-drain driving i/o v cc downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn 6 __________________________________________________ _____________________________________ typical operating characteristics (driving i/o v l rail-to-rail, r l = 1m ,t a = +25?, unless otherwise noted.) i vl ( a) 86 88 90 92 94 96 98 100 102 2.5 3.5 3.0 4.0 4.5 5.0 5.5 v l supply current vs. power-supply voltage max3370-01 v cc (v) rate = 2mbps, c load = 10pf rate = 1mbps, c load = 50pf rate = 500kbps, c load = 30pf, open-drain drive v l = 1.8v 0 200100 400300 500 600 2.5 3.5 4.0 3.0 4.5 5.0 5.5 max3370-02 v cc (v) i vcc ( a) v cc supply current vs. power-supply voltage rate = 2mbps, c load = 10pf rate = 1mbps, c load = 50pf v l = 1.8v rate = 500kbps, c load = 30pf, open-drain drive 89 9291 90 93 94 95 96 97 98 99 -40 10 - 1 5 3 56 08 5 max3370-03 temperature ( c) i vl ( a) v l supply current vs. temperature v cc = 2.5v v cc = 3.3v v cc = 5.0v v l = 1.8v, rate = 500kbps, c load = 30pf, open-drain drive 100 200150 300250 400350 450 -40 10 -15 35 60 85 max3370-04 temperature ( c) i vcc ( a) v cc supply current vs. temperature v cc = 2.5v v cc = 3.3v v cc = 5.0v v l = 1.8v, rate = 500kbps, c load = 30pf, open-drain drive 80 9085 100 95 110105 115 max3370-05 c load (pf) i vl ( a) 0 50 100 150 200 v l supply current vs. load capacitance rate = 500kbps, c load = 30pf, open-drain drive rate = 2mbps, c load = 10pf rate = 1mbps, c load = 50pf v l = 1.8v v cc = 3.3v 80 280180 480380 680580 780 max3370-06 c load (pf) i vcc ( a) 0 50 100 150 200 v cc supply current vs. load capacitance rate = 500kbps, c load = 30pf, open-drain drive rate = 2mbps, c load = 10pf rate = 1mbps, c load = 50pf v l = 1.8v v cc = 3.3v downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn ___________________________________________________ ____________________________________ 7 0 1510 5 20 25 30 35 40 45 50 0 50 100 150 200 max3370-07 c load (pf) propagation delay (ns) propagation delay vs. load capacitance (driving i/o v l ) low-to-high transition high-to-low transition v l = 1.8v v cc = 3.3v 0 10 5 2015 3025 35 0 50 100 150 200 max3370-08 c load (pf) propagation delay (ns) propagation delay vs. load capacitance (driving i/o v cc ) low-to-high transition high-to-low transition v l = 1.8v v cc = 3.3v i/o v cc 0 1v/div 0 i/o v l 100ns/div rail-to-rail driving (rate = 2mbps, c load = 10pf, v cc = 3.3v, v l = 1.8v) max3370-09 i/o v cc 0 1v/div 0 i/o v l 200ns/div rail-to-rail driving (rate = 1mbps, c load = 50pf, v cc = 3.3v, v l = 1.8v) max3370-10 i/o v cc 0 1v/div 0 i/o v l 400ns/div open-drain driving (rate = 500kbps, c load = 30pf, v cc = 3.3v, v l = 1.8v) max3370-11 i/o v cc 0 2v/div 0 i/o v l 400ns/div open-drain driving (rate = 500kbps, c load = 30pf, v cc = 5v, v l = 2.5v) max3370-12 0 2v/div 0 i/o v cc 100ns/div max3371 exiting shutdown max3370-13 i/o v l v shdn 0 typical operating characteristics (continued) ( driving i/o v l rail-to-rail, r l = 1m , t a = +25?, unless otherwise noted. ) downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn 8 __________________________________________________ _____________________________________ pin description pin max3370 (sc70-5) (dfn-6) max3371 (sc70-6 and dfn-6) name function 1 1 1 v l logic supply voltage 2 2 2 gnd ground 3 3 3 i/o v l input/output referred to v l 4 4 4 i/o v cc input/output referred to v cc 5 6 6 v cc power-supply voltage 5 hdn shutdown. a high turns on the device. a low shuts down the device. i/o v cc and i/o v l are high impedance in shutdown. 5 n.c. no connection detailed description the max3370/max3371 provide the necessary leveltranslation to allow data transfer in a multivoltage sys- tem. these devices transmit data between an i/o pin referenced to v cc and an i/o pin referenced to v l . the v cc supply voltage range is from +2.5v to +5.5v, and the v l supply voltage range is between +1.6v and +5.5v. the max3371 features a shutdown mode inwhich i/o v cc and i/o v l are placed in a high-imped- ance state and supply current drops to 1?.the max3370/max3371 are bidirectional level shifters allowing data transfer from the v cc side to the v l side, and from the v l side to the v cc side. both devices operate at speeds up to 2mbps with an active driverand up to 500kbps with an open-drain driver. level translation the max3370/max3371 provide bidirectional leveltranslation between i/o pins referred to v cc and v l . i/o v cc and i/o v l are internally pulled up to their respective power-supply rails through 10k resistors. v cc must be between +2.5v and +5.5v, and v l must be between +1.6v and +5.5v. for proper operation, v l can not exceed v cc . the max3370/max3371 can operate at data rates upto 2mbps when driven by an active (push-pull) driver with a 10pf load, 1mbps when driven by an active dri- ver with a 50pf load, or 500kbps when driven by an open-drain driver with a 30pf load. the internal pullups allow these devices to be driven by open-drain drivers. max3371 shutdown mode the max3371 enters a low-power shutdown modewhen shdn is driven low. connect shdn to v l or drive high for normal operation. activating shutdown modedisconnects the internal 10k pullup resistors on i/o v cc and i/o v l . as a result, the supply current decreases to < 1?, and the i/o lines are high imped-ance. the high impedance i/o lines in shutdown allow use in a multidrop network. when in shutdown, i/o v l can be driven to v l and i/o v cc can be driven to v cc . functional diagram speedup mnsw r 1 s 1 s 2 r 2 gnd i/o v cc i/o v l v cc v l max3370 downloaded from: http:///
max3370/max3371 1a, 2mbps, low-voltage level translators in sc70 and dfn ___________________________________________________ ____________________________________ 9 speed-up the speed-up circuit is a one-shot generator that helpsthe rise time of the output waveform in the low-to-high transition. when triggered, switches s 1 and s 2 turn on for 320ns to pull up i/o v l and i/o v cc . this greatly reduces the rise time and propagation delay for thelow-to-high transition as well as improves the duty cycle (closer to 50% for an ideal square-wave input). see the scope plots in the typical operating characteristics for the speed-up circuitry in operation. applications information power-supply decoupling to reduce ripple and the chance of transmitting incor-rect data, decouple v cc and v l to ground with a 0.1? capacitor as close to the device as possible. i 2 c level translation the max3370/max3371 are ideal for level translationbetween a low-voltage asic and an i 2 c device. the devices?bidirectional natures allow their use in the dataline of i 2 c communications. a typical application is interfacing a low-voltage microprocessor to a 3v or 5vd/a converter, such as the max517. the i/o lines on the max3370/max3371 are bidirec-tional, can be level-shifted up to +5.5v, and contain internal 10k pullup resistors to allow open-drain dri- ving (see the typical operating circuit ). push-pull vs. open-drain driving the max3370/max3371 i/o pins can be driven by apush-pull or open-drain device. when using a push-pull driver, the max3370/max3371 operate up to 2mbps with a 10pf load or 1mbps with a 50pf load. the inter- nal pullup resistors on the i/o pins allow use with open- drain devices. the max3370/max3371 operate up to 500kbps with a 30pf load when driven by an open- drain device. data rates higher than those listed in the electrical characteristics table can be achieved. the maximum data rate is limited to 3mbps by the speed-up circuitry. unidirectional vs. bidirectional level translator the max3370/max3371 may also be used to translateunidirectional signals without signal inversion. the devices provide the smallest solution (sc70 package) for unidirectional level translation without inversion. chip information process: bicmos package information for the latest package outline information and land patterns, goto www.maxim-ic.com/packages . package type package code document no. 5 sc70 x5+1 21-0076 6 sc70 x6sn+1 21-0077 6 ?fn l611+2 21-0147 downloaded from: http:///
max3370/max3371 ? 1a, 2mbps, low-voltage level translators in sc70 1a, 2mbps, low-voltage level translators in sc70 and dfn maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2009 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 10/00 initial release 3 5/09 updated ordering information , style edits. 1, 5, 8, 9, 11 downloaded from: http:///
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