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general description the max6730?ax6735 single-/dual-/triple-voltage microprocessor (?) supervisors feature a watchdog timer and manual reset capability. the max6730 max6735 offer factory-set reset thresholds for monitor- ing voltages from +0.9v to +5v and an adjustable reset input for monitoring voltages down to +0.63v. the com- bination of these features significantly improves system reliability and accuracy when compared to separate ics or discrete components. the active-low reset output asserts and remains asserted for the reset timeout period after all the monitored volt- ages exceed their respective thresholds. multiple factory- set reset threshold combinations reduce the number of external components required. the max6730/max6731 monitor a single fixed voltage, the max6732/max6733 monitor two fixed voltages, and the max6734/max6735 monitor two fixed voltages and one adjustable voltage. all devices are offered with six minimum reset timeout peri- ods ranging from 1.1ms to 1120ms. the max6730?ax6735 feature a watchdog timer with an independent watchdog output. the watchdog timer prevents system lockup during code execution errors. a watchdog startup delay of 54s after reset asserts allows system initialization during power-up. the watch- dog operates in normal mode with a 1.68s delay after initialization. the max6730/max6732/max6734 provide an active-low, open-drain watchdog output. the max6731/max6733/max6735 provide an active-low, push-pull watchdog output. other features include a manual reset input (max6730/ max6731/max6734/max6735) and push-pull reset out- put (max6731/max6733/max6735) or open-drain reset output (max6730/max6732/max6734). the max6730 max6733 are offered in a tiny sot23-6 package. the max6734/max6735 are offered in a space-saving sot23-8 package. all devices are fully specified over the extended -40? to +85? temperature range. applications multivoltage systems telecom/networking equipment computers/servers portable/battery-operated equipment industrial equipment printer/fax set-top boxes features v cc 1 (primary supply) reset threshold voltages from +1.575v to +4.63v v cc 2 (secondary supply) reset threshold voltages from +0.79v to +3.08v adjustable rstin threshold for monitoring voltages down to +0.63v (max6734/max6735 only) six reset timeout options watchdog timer with independent watchdog output 35s (min) initial watchdog startup period 1.12s (min) normal watchdog timeout period manual reset input (max6730/max6731/max6734/max6735) guaranteed reset valid down to v cc 1 or v cc 2 = +0.8v push-pull reset or open-drain reset output immune to short v cc transients low supply current: 14 a (typ) at +3.6v small 6-pin and 8-pin sot23 packages max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output ________________________________________________________________ maxim integrated products 1 ordering information 19-2629; rev 6; 11/11 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. * insert the threshold level suffixes for v cc 1 and v cc 2 (table 1) after ?t?or ?a.?for the max6730/max6731, insert only the v cc 1 threshold suffix after the ?t.?insert the reset timeout delay (table 2) after ??to complete the part number. for exam- ple, the max6732utltd3-t provides a v cc 1 threshold of +4.625v, a v cc 2 threshold of +3.075v, and a 210ms reset time- out period. sample stock is generally held on standard versions only (see the standard versions table). standard versions have an order increment requirement of 2500 pieces. nonstandard versions have an order increment requirement of 10,000 pieces. contact factory for availability. part* temp range pin-package max6730 ut_d_ -t -40c to +85c 6 sot23 max6731 ut_d_ -t -40c to +85c 6 sot23 max6732 ut_ _d_ -t -40c to +85c 6 sot23 max6733 ut_ _d_ -t -40c to +85c 6 sot23 max6734 ka_ _d_ -t -40c to +85c 8 sot23 max6734ka_ _d_ /v-t -40c to +85c 8 sot23 max6735 ka_ _d_ -t -40c to +85c 8 sot23 typical operating circuit and pin configurations appear at end of data sheet. devices are available in both leaded and lead(pb)-free/rohs- compliant packaging. specify lead-free by replacing ?t?with ?t?when ordering. /v denotes an automotive qualified part.
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc 1 = v cc 2 = +0.8v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. parameter sym b o l conditions min typ max units supply voltage v cc 1, v cc 2 0.8 5.5 v v cc 1 < +5.5v, all i/o connections open, outputs not asserted 15 39 i cc 1 v cc 1 < +3.6v, all i/o connections open, outputs not asserted 10 28 v cc 2 < +3.6v, all i/o connections open, outputs not asserted 411 supply current i cc 2 v cc 2 < +2.75v, all i/o connections open, outputs not asserted 39 ? l (falling) 4.500 4.625 4.750 m (falling) 4.250 4.375 4.500 t (falling) 3.000 3.075 3.150 s (falling) 2.850 2.925 3.000 r (falling) 2.550 2.625 2.700 z (falling) 2.250 2.313 2.375 y (falling) 2.125 2.188 2.250 w (falling) 1.620 1.665 1.710 v cc 1 reset threshold v th 1 v (falling) 1.530 1.575 1.620 v v cc 1, v cc 2, rstin, mr , wdi to gnd .....................-0.3v to +6v rst , wdo to gnd (open drain)...............................-0.3v to +6v rst , wdo to gnd (push-pull) .................-0.3v to (v cc 1 + 0.3v) input current/output current (all pins) ...............................20ma continuous power dissipation (t a = +70?) 6-pin sot23-6 (derate 8.7mw/? above +70?) ........696mw 8-pin sot23-8 (derate 8.9mw/? above +70?) ........714mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? junction temperature ......................................................+150? lead temperature (soldering, 10s) .................................+300? soldering temperature (reflow) lead (pb)-free packages.............................................+260? package containing lead (pb) .....................................+240?
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc 1 = v cc 2 = +0.8v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter sym b o l conditions min typ max units t (falling) 3.000 3.075 3.150 s (falling) 2.850 2.925 3.000 r (falling) 2.550 2.625 2.700 z (falling) 2.250 2.313 2.375 y (falling) 2.125 2.188 2.250 w (falling) 1.620 1.665 1.710 v (falling) 1.530 1.575 1.620 i (falling) 1.350 1.388 1.425 h (falling) 1.275 1.313 1.350 g (falling) 1.080 1.110 1.140 f (falling) 1.020 1.050 1.080 e (falling) 0.810 0.833 0.855 v cc 2 reset threshold v th 2 d (falling) 0.765 0.788 0.810 v reset threshold tempco 20 ppm/ o c reset threshold hysteresis v hyst referenced to v th typical 0.5 % v cc _ to rst output delay t rd v cc 1 = (v th 1 + 100mv) to (v th 1 - 100mv) or v cc 2 = (v th 2 + 75mv) to (v th 2 - 75mv) 45 ? d1 1.1 1.65 2.2 d2 8.8 13.2 17.6 d3 140 210 280 d5 280 420 560 d6 560 840 1120 reset timeout period t rp d4 1120 1680 2240 ms adjustable reset comparator input (max6734/max6735) rstin input threshold v rstin 611 626.5 642 mv rstin input current i rstin -25 +25 na rstin hysteresis 3mv rstin to reset output delay t rstind v rstin to (v rstin - 30mv) 22 ? manual reset input (max6730/max6731/max6734/max6735) v il 0.3 v cc 1 mr input threshold v ih 0.7 v cc 1 v mr minimum pulse width 1 s mr glitch rejection 100 ns mr to reset output delay t mr 200 ns mr pullup resistance 25 50 80 k ?
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 4 _______________________________________________________________________________________ electrical characteristics (continued) (v cc 1 = v cc 2 = +0.8v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter sym b o l conditions min typ max units watchdog input t wd-l first watchdog period after reset timeout period 35 54 72 watchdog timeout period t wd-s normal mode 1.12 1.68 2.24 s wdi pulse width t wdi (note 2) 50 ns v il 0.3 v cc 1 wdi input voltage v ih 0.7 v cc 1 v wdi input current i wdi v wdi = 0v or v cc 1-1+1a reset/watchdog output v cc 1 or v cc 2 +0.8v, i sink = 1?, output asserted 0.3 v cc 1 or v cc 2 +1.0v, i sink = 50?, output asserted 0.3 v cc 1 or v cc 2 +1.2v, i sink = 100?, output asserted 0.3 v cc 1 or v cc 2 +2.7v, i sink = 1.2ma, output asserted 0.3 rst / wdo output low voltage (push-pull or open drain) v ol v cc 1 or v cc 2 +4.5v, i sink = 3.2ma, output asserted 0.4 v v cc 1 +1.8v, i source = 200?, output not asserted 0.8 v cc 1 v cc 1 +2.7v, i source = 500?, output not asserted 0.8 v cc 1 rst / wdo output high voltage (push-pull only) v oh v cc 1 +4.5v, i source = 800?, output not asserted 0.8 v cc 1 v rst / wdo output open-drain leakage current output not asserted 0.5 ? note 1: devices tested at t a = +25?. overtemperature limits are guaranteed by design and not production tested. note 2: parameter guaranteed by design.
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output _______________________________________________________________________________________ 5 0 4 2 10 8 6 16 14 12 18 -40 10 -15 356085 supply current vs. temperature (v cc 1 = +5v, v cc 2 = +3.3v) max6730-35 toc01 temperature ( c) supply current ( a) total i cc 1 i cc 2 0 4 2 10 8 6 16 14 12 18 -40 10 -15 356085 supply current vs. temperature (v cc 1 = +3.3v, v cc 2 = +2.5v) max6730-35 toc02 temperature ( c) supply current ( a) total i cc 1 i cc 2 0 4 2 10 8 6 16 14 12 18 -40 10 -15 35 60 85 supply current vs. temperature (v cc 1 = +2.5v, v cc 2 = +1.8v) max6730-35 toc03 temperature ( c) supply current ( a) total i cc 1 i cc 2 0 4 2 10 8 6 16 14 12 18 -40 10 -15 356085 supply current vs. temperature (v cc 1 = +1.8v, v cc 2 = +1.2v) max6730-35 toc04 temperature ( c) supply current ( a) total i cc 1 i cc 2 normalized threshold voltage vs. temperature max6730-35 toc05 temperature ( c) normalized threshold voltage 60 35 10 -15 0.992 0.994 0.996 0.998 1.000 1.002 1.004 1.006 1.008 1.010 0.990 -40 85 typical operating characteristics (v cc 1 = +5v, v cc 2 = +3.3v, t a = +25?, unless otherwise noted.)
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 6 _______________________________________________________________________________________ typical operating characteristics (continued) (v cc 1 = +5v, v cc 2 = +3.3v, t a = +25?, unless otherwise noted.) 12 14 16 18 20 22 24 26 28 30 10 rstin to reset output delay vs. temperature max6730-35 toc10 temperature ( c) rstin to reset output delay ( s) 60 35 -15 10 -45 85 maximum v cc_ transient duration vs. reset threshold overdrive max6730-35 toc07 reset threshold overdrive (mv) maximum v cc_ transient duration ( s) 10 100 100 1000 10,000 10 1 1000 rst asserts above this line mr to reset output delay max6730-35 toc08 40ns/div mr 2v/div rst 2v/div v cc_ to reset output delay vs. temperature (100mv overdrive) max6730-35 toc09 temperature ( c) v cc_ to reset output delay ( s) 60 35 -15 10 45 50 55 60 65 70 75 80 40 -45 85 normalized timeout period vs. temperature max6730-35 toc06 temperature ( c) normalized timeout period 60 35 10 -15 0.9995 1.0000 1.0005 1.0010 1.0015 1.0020 1.0025 1.0030 1.0035 1.0040 0.9990 -40 85
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output _______________________________________________________________________________________ 7 pin description pin max6730 max6731 max6732 max6733 max6734 max6735 name function 111 rst active-low reset output. the max6730/max6732/max6734 provide an open-drain output. the max6731/max6733/max6735 provide a push-pull output. rst asserts low when any of the following conditions occur: v cc 1 or v cc 2 drops below its preset threshold, rstin drops below its reset threshold, or mr is driven low. open- drain versions require an external pullup resistor. 2 2 2 gnd ground 334 wdo active-low watchdog output. the max6730/max6732/max6734 provide an open- drain wdo output. the max6731/max6733/max6735 provide a push-pull wdo output. wdo asserts low when no low-to-high or high-to-low transition occurs on wdi within the watchdog timeout period (t wd ) or if an undervoltage lockout condition exists for v cc 1, v cc 2, or rstin. wdo deasserts without a timeout period when v cc 1, v cc 2, and rstin exceed their reset thresholds, or when the manual reset input is asserted. open-drain versions require an external pullup resistor. 45 mr active-low manual reset input. drive mr low to force a reset. rst remains asserted as long as mr is low and for the reset timeout period after mr releases high. mr has a 50k ? pullup resistor to v cc 1; leave mr open or connect to v cc 1 if unused. 5 5 3 wdi watchdog input. if wdi remains high or low for longer than the watchdog timeout period, the internal watchdog timer expires and the watchdog output asserts low. the internal watchdog timer clears whenever rst asserts or a rising or falling edge on wdi is detected. the watchdog has an initial watchdog timeout period (35s min) after each reset event and a short timeout period (1.12s min) after the first valid wdi transition. leaving wdi unconnected does not disable the watchdog timer function. 668v cc 1 primary supply-voltage input. v cc 1 provides power to the device when it is greater than v cc 2. v cc 1 is the input to the primary reset threshold monitor. ? 6v cc 2 secondary supply-voltage input. v cc 2 provides power to the device when it is greater than v cc 1. v cc 2 is the input to the secondary reset threshold monitor. 7 rstin undervoltage reset comparator input. rstin provides a high-impedance comparator input for the adjustable reset monitor. rst asserts low if the voltage at rstin drops below the 626mv internal reference voltage. connect a resistive voltage-divider to rstin to monitor voltages higher than 626mv. connect rstin to v cc 1 or v cc 2 if unused.
max6730?ax6735 detailed description supply voltages the max6730?ax6735 microprocessor (?) supervi- sors maintain system integrity by alerting the ? to fault conditions. the max6730?ax6735 monitor one to three supply voltages in ?-based systems and assert an active-low reset output when any monitored supply voltage drops below its preset threshold. the output state remains valid for v cc 1 or v cc 2 greater than +0.8v. threshold levels the two-letter code in the reset voltage threshold suffix guide (table 1) indicates the threshold level combinations for v cc 1 and v cc 2. reset output the max6730?ax6735 feature an active-low reset out- put ( rst ). rst asserts when the voltage at either v cc 1 or v cc 2 falls below the voltage threshold level, v rstin drops below its threshold, or mr is driven low (figure 1). rst remains low for the reset timeout period (table 2) after v cc 1, v cc 2, and rstin increase above their respective thresholds and after mr releases high. whenever v cc 1, v cc 2, or rstin go below the reset threshold before the end of the reset timeout period, the internal timer restarts. the max6730/max6732/ max6734 provide an open-drain rst output, and the max6731/ max6733/max6735 provide a push-pull rst output. single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 8 _______________________________________________________________________________________ table 1. reset voltage threshold suffix guide** part no. suffix v cc 1 nominal voltage threshold(v) v cc 2 nominal voltage threshold (v) lt 4.625 3.075 ms 4.375 2.925 mr 4.375 2.625 tz 3.075 2.313 sy 2.925 2.188 ry 2.625 2.188 tw 3.075 1.665 sv 2.925 1.575 rv 2.625 1.575 ti 3.075 1.388 sh 2.925 1.313 rh 2.625 1.313 tg 3.075 1.110 sf 2.925 1.050 rf 2.625 1.050 te 3.075 0.833 sd 2.925 0.788 rd 2.625 0.788 zw 2.313 1.665 yv 2.188 1.575 zi 2.313 1.388 yh 2.188 1.313 zg 2.313 1.110 yf 2.188 1.050 ze 2.313 0.833 yd 2.188 0.788 wi 1.665 1.388 vh 1.575 1.313 wg 1.665 1.110 vf 1.575 1.050 we 1.665 0.833 vd 1.575 0.788 ** standard versions are shown in bold and are available in a d3 timeout option only. standard versions require 2500-piece order increments and are typically held in sample stock. there is a 10,000-piece order increment on nonstandard versions. other threshold voltages may be available; contact factory for availability. table 2. reset timeout period suffix guide active timeout period timeout period suix min (ms) max (ms) d1 1.1 2.2 d2 8.8 17.6 d3 140 280 d5 280 560 d6 560 1120 d4 1120 2240
manual reset input many ?-based products require manual reset capabil- ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. a logic low on mr asserts the reset output, clears the watchdog timer, and deasserts the watchdog output. reset remains asserted while mr is low and for the reset timeout peri- od (t rp ) after mr returns high. an internal 50k ? pullup resistor allows mr to be left open if unused. drive mr with ttl or cmos-logic levels or with open-drain/col- lector outputs. connect a normally open momentary switch from mr to gnd to create a manual reset func- tion; external debounce circuitry is not required. connect a 0.1? capacitor from mr to gnd to provide additional noise immunity when driving mr over long cables or if the device is used in a noisy environment. adjustable input voltage (rstin) the max6734/max6735 provide an additional high- impedance comparator input with a 626mv threshold to monitor a third supply voltage. to monitor a voltage higher than 626mv, connect a resistive-divider to the circuit as shown in figure 2 to establish an externally controlled threshold voltage, v ext_th . v = 626mv ext_th + () rr r 12 2 max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output _______________________________________________________________________________________ 9 t rp t rp v th v cc (min) v cc 1, v cc 2 rstin rst wdo mr figure 1. rst , wdo , and mr timing diagram max6734 max6735 v ext_th gnd rstin r1 r2 figure 2. monitoring a third voltage
max6730?ax6735 the rstin comparator derives power from v cc 1, and the input voltage must remain less than or equal to v cc 1. low leakage current at rstin allows the use of large-valued resistors, resulting in reduced power con- sumption of the system. watchdog the watchdog feature monitors ? activity through the watchdog input (wdi). a rising or falling edge on wdi within the watchdog timeout period (t wd ) indi- cates normal ? operation. wdo asserts low if wdi remains high or low for longer than the watchdog timeout period. leaving wdi unconnected does not disable the watchdog timer. the max6730?ax6735 include a dual-mode watch- dog timer to monitor ? activity. the flexible timeout architecture provides a long-period initial watchdog mode, allowing complicated systems to complete lengthy boots, and a short-period normal watchdog mode, allowing the supervisor to provide quick alerts when processor activity fails. after each reset event (v cc power-up, brownout, or manual reset), there is a long initial watchdog period of 35s (min). the long watchdog period mode provides an extended time for the system to power up and fully initialize all ? and system components before assuming responsibility for routine watchdog updates. the usual watchdog timeout period (1.12s min) begins after the initial watchdog timeout period (t wd-l ) expires or after the first transition on wdi (figure 3). during nor- mal operating mode, the supervisor asserts the wdo output if the ? does not update the wdi with a valid transition (high to low or low to high) within the standard timeout period (t wd-s ) (1.12s min). connect mr to wdo to force a system reset in the event that no rising or falling edge is detected at wdi within the watchdog timeout period. wdo asserts low when no edge is detected by wdi, the rst output asserts low, the watchdog counter immediately clears, and wdo returns high. the watchdog counter restarts, using the long watchdog period, when the reset timeout period ends (figure 4). ensuring a valid reset output down to v cc = 0v the max6730?ax6735 guarantee proper operation down to v cc = +0.8v. in applications that require valid reset levels down to v cc = 0v, use a 100k ? pulldown resistor from rst to gnd. the resistor value used is not critical, but it must be large enough not to load the reset output when v cc is above the reset threshold. for most applications, 100k ? is adequate. note that this configuration does not work for the open-drain outputs of max6730/max6732/max6734. single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 10 ______________________________________________________________________________________ t rp v th v cc (min) v cc 1, v cc 2 rstin rst wdo wdi < t wd-s < t wd-s > t wd-s t wd-s < t wd-s < t wd-s < t wd-l figure 3. watchdog input/output timing diagram ( mr and wdo not connected)
applications information interfacing to ?s with bidirectional reset pins microprocessors with bidirectional reset pins can inter- face directly with the open-drain rst output options. however, conditions might occur in which the push-pull output versions experience logic contention with the bidirectional reset pin of the ?. connect a 10k ? resis- tor between rst and the ?? reset i/o port to prevent logic contention (figure 5). falling v cc transients the max6730?ax6735 ? supervisors are relatively immune to short-duration falling v cc _ transients (glitch- es). small glitches on v cc _ are ignored by the max6730?ax6735, preventing undesirable reset pulses to the ?. the typical operating characteristics show maximum transient duration vs. reset threshold max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output ______________________________________________________________________________________ 11 t rp > t wd-s t mr < t wd-s < t wd-l < t wd-l t rp v th v cc (min) v cc 1, v cc 2 rstin rst wdo wdi mr figure 4. watchdog input/output timing diagram ( mr and wdo connected) max6731 max6733 max6735 v cc 1 v cc 1 v cc 2 v cc 2 reset to other system components gnd p rst gnd 10k ? reset figure 5. interfacing to ?s with bidirectional reset i/o
max6730?ax6735 overdrive, for which reset pulses are not generated. the graph was produced using falling v cc _ pulses, starting above v th and ending below the reset thresh- old by the magnitude indicated (reset threshold over- drive). the graph shows the maximum pulse width that a falling v cc transient typically might have without causing a reset pulse to be issued. as the amplitude of the transient increases (i.e., goes further below the reset threshold), the maximum allowable pulse width decreases. a 0.1? bypass capacitor mounted close to v cc _ provides additional transient immunity. watchdog software considerations setting and resetting the watchdog input at different points in the program rather than ?ulsing?the watch- dog input high-low-high or low-high-low helps the watchdog timer closely monitor software execution. this technique avoids a ?tuck?loop, in which the watchdog timer continues to be reset within the loop, preventing the watchdog from timing out. figure 6 shows an example flow diagram in which the i/o dri- ving the watchdog input is set high at the beginning of the program, set low at the beginning of every subrou- tine or loop, and then set high again when the program returns to the beginning. if the program ?angs?in any subroutine, the i/o continually asserts low (or high), and the watchdog timer expires, issuing a reset or interrupt. single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 12 ______________________________________________________________________________________ start set wdi high program code return subroutine completed hang in subroutine subroutine or program loop set wdi low figure 6. watchdog flow diagram max6730 max6735 v ref reset timeout period reset output driver watchdog timer ref v cc 1 v ref / 2 gnd v cc 1 mr v cc 1 v cc 1 v cc 1 v cc 2 mr pullup v cc 1 v cc 2 rstin rst wdo wdi functional diagram
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output ______________________________________________________________________________________ 13 standard versions part top mark max6730 utld3-t abcc max6730utsd3-t abpb max6730utrd3-t abpa max6730utzd3-t abpd max6730utvd3-t abpc max6731 utld3-t abpe max6731uttd3-t abcd max6731utsd3-t abpg max6731utrd3-t abpf max6731utzd3-t abpi max6731utvd3-t abph max6732 utltd3-t abce max6732utsyd3-t abpn max6732utsvd3-t abpm MAX6732UTRVD3-T abpj max6732utshd3-t abpl max6732uttgd3-t abpo max6732utsdd3-t abpk max6732utzwd3-t abpv max6732utyhd3-t abpt max6732utzgd3-t abpu max6732utydd3-t abps max6732utvhd3-t abpq max6732utwgd3-t abpr max6732utvdd3-t abpp max6733 utltd3-t abpw max6733utsyd3-t abqb max6733utsvd3-t abqa max6733utrvd3-t abpx max6733utshd3-t abpz max6733uttgd3-t abqc max6733utsdd3-t abpy max6733utzwd3-t abqj max6733utyhd3-t abqh part top mark max6733utzgd3-t abqi max6733utydd3-t abqg max6733utvhd3-t abqe max6733utwgd3-t abqf max6733utvdd3-t abqd max6734 kaltd3-t aehn max6734kasyd3-t aehs max6734kasvd3-t aehr max6734karvd3-t aeho max6734kashd3-t aehq max6734katgd3-t aeht max6734kasdd3-t aehp max6734kazwd3-t aeia max6734kayhd3-t aehy max6734kazgd3-t aehz max6734kaydd3-t aehx max6734kavhd3-t aehv max6734kawgd3-t aehw max6734kavdd3-t aehu max6735 kaltd3-t aeib max6735kasyd3-t aeig max6735kasvd3-t aeif max6735karvd3-t aeic max6735kashd3-t aeie max6735katgd3-t aeih max6735kasdd3-t aeid max6735kazwd3-t aeio max6735kazid3-t aajz max6735kayhd3-t aeim max6735kazgd3-t aein max6735kaydd3-t aeil max6735kavhd3-t aeij max6735kawgd3-t aeik max6735kavdd3-t aeii note: sample stock is generally held on standard versions only. standard versions have an order increment requirement of 2500 pieces. nonstandard versions have an order increment requirement of 10,000 pieces. contact factory for availability of nonstan dard versions.
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output 14 ______________________________________________________________________________________ ___________________chip information process: bicmos gnd mr wdo 16 v cc 1 5 wdi rst max6730 max6731 sot23-6 top view 2 34 gnd v cc 2 wdo 16 v cc 1 5 wdi rst max6732 max6733 sot23-6 sot23-8 2 34 v cc 2 mr wdo 1 2 8 7 v cc 1 rstin gnd wdi rst 3 4 6 5 max6734 max6735 pin configurations max6734 max6735 +0.9v v core +3.3v +1.8v mr gnd rstin rst wdi wdo pushbutton switch reset p nmi i/o v cc (i/o) v dd (memory) v cc 1 v cc 2 gnd typical operating circuit selector guide part number voltage monitors rst output manual reset watchdog input watchdog output max6730 1 open drain ? open drain max6731 1 push-pull ? push-pull max6732 2 open drain open drain max6733 2 push-pull push-pull max6734 3 open drain ? open drain max6735 3 push-pull ? push-pull package type package code outline no. land pattern no. 6 sot23 u6-1 21-0058 90-0175 8 sot23 k85n-1 21-0078 90-0176 package information for the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages . note that a ?? ?? or ??in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status.
max6730?ax6735 single-/dual-/triple-voltage ? supervisory circuits with independent watchdog output maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidanc e. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 15 2011 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 10/02 initial release. 1 12/02 released max6730/max6731. 1 2 1/03 released max6733. 1 3 3/04 updated typical operating circuit .14 4 12/05 added lead-free notation to ordering information .1 5 3/09 updated pin description and added package table . 7, 14 6 11/11 added automotive-qualified part information 1

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