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standard versions table continued at end of data sheet. typical operating circuit, threshold suffix guide, and selector guide appear at end of data sheet. portable/battery- powered equipment embedded controllers intelligent instruments critical p monitoring multivoltage systems general description the max6826Cmax6831 are ultra-low-voltage micropro - cessor (p) supervisory circuits designed to monitor two power supplies and have manual reset and watchdog input functions. these devices assert a system reset if any of the monitored supplies fall below the prepro - grammed thresholds, and maintain reset for a minimum timeout period after the supplies rise above the threshold. microprocessor supervisors significantly improve system reliability and accuracy compared to separate ics or discrete components. these devices monitor primary voltages from +1.8v to +5.0v and secondary voltages from +0.9v to +2.5v. these devices are guaranteed to be in the correct state for v cc down to +1.0v. a variety of preprogrammed reset threshold voltages are available (see the threshold suffix guide ). the devices include manual reset and watchdog inputs. the max6829/max6830/max6831 provide a factory- trimmed threshold to monitor a 2nd voltage down to +0.9v. the max6826/max6829 have a push-pull reset , the max6827/max6830 have a push-pull reset and the max6828/max6831 have an open-drain reset . the max6826/max6827/max6828 have an auxiliary monitor that allows user adjustable input to monitor voltages down to +0.6v. see selector guide for functions available. applications features monitor primary v cc supplies from +1.8v to +5.0v and secondary v cc2 supplies from +0.9v to +2.5v user adjustable reset in down to +0.63v (max6826/max6827/max6828) 140ms (min) reset timeout delay 1.6s watchdog timeout period manual reset input three reset output options push-pull reset push-pull reset open-drain reset guaranteed reset valid down to v cc = +1.0v immune to short negative v cc transients no external components small 6-pin sot23 packages *samples are typically available for standard versions only. the max6826/max6827/max6828 require a 2.5k minimum order increment for all versions. contact factory for availability. ?insert the desired suffix letter (from standard versions table) into the blanks to complete the part number. devices are available in both leaded and lead-free packaging. specify lead-free by replacing -t with +t when ordering. max6826/max6827/max6828 l s r z v part ? temp range pin-package max6826 _ut-t -40c to +125c 6 sot23 max6827 _ut-t -40c to +125c 6 sot23 max6828 _ut-t -40c to +125c 6 sot23 max6829 _ _ut-t -40c to +125c 6 sot23 max6830 _ _ut-t -40c to +125c 6 sot23 max6831 _ _ut-t -40c to +125c 6 sot23 gnd wdi mr 1 6 v cc 5 reset in/v cc2 reset (reset) (reset) max6827/max6830 onlyreset in for max6826/max6827/max6828 only v cc2 for max6829/max6830/max6831 only max6826C max6831 sot23-6 top view 2 3 4 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer 19-1867; rev 3; 7/14 standard versions table* ordering information pin coniguration downloaded from: http:///
v cc , v cc2 to gnd ............................................... -0.3v to +6.0v open-drain reset .............................................. -0.3v to +6.0v push-pull reset , reset ....................... -0.3v to (v cc + 0.3v) mr , wdi, reset in ................................ -0.3v to (v cc + 0.3v) input current (v cc ) ............................................................ 20ma output current ( reset , reset) ...................................... 20ma continuous power dissipation (t a = +70c) 6-pin sot23 (derate 8.7mw/c above +70c) .......... 696mw operating temperature range ......................... -40c to +125c junction temperature ...................................................... +150c storage temperature range ............................ -65c to +150c lead temperature (soldering, 10s) ................................. +300c (v cc = +4.5v to +5.5v for max68_ _l/m, v cc = +2.7v to +3.6v for max68_ _t/s/r, v cc = +2.1v to +2.75v for max68_ _z/y, v cc = +1.53v to +2.0v for max68_ _w/v; t a = -40c to +125c, unless otherwise specified. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units operating voltage range v cc t a = 0c to +85c 1.0 5.5 v t a = -40c to +125c 1.2 5.5 v cc supply current mr and wdi unconnected i cc v cc = +5.5v, no load t a = -40c to +85c 10 20 a t a = -40c to +125c 30 v cc = +3.6v, no load t a = -40c to +85c 7 16 t a = -40c to +125c 25 v cc2 supply current v cc2 +2.5v 2 a v cc reset threshold (v cc falling) v th max68_ _l t a = -40c to +85c 4.50 4.63 4.75 v t a = -40c to +125c 4.47 4.63 4.78 max68_ _m t a = -40c to +85c 4.25 4.38 4.50 t a = -40c to +125c 4.22 4.38 4.53 max68_ _t t a = -40c to +85c 3.00 3.08 3.15 t a = -40c to +125c 2.97 3.08 3.17 max68_ _s t a = -40c to +85c 2.85 2.93 3.00 t a = -40c to +125c 2.83 2.93 3.02 max68_ _r t a = -40c to +85c 2.55 2.63 2.70 t a = -40c to +125c 2.53 2.63 2.72 max68_ _z t a = -40c to +85c 2.25 2.32 2.38 t a = -40c to +125c 2.24 2.32 2.40 max68_ _y t a = -40c to +85c 2.12 2.19 2.25 t a = -40c to +125c 2.11 2.19 2.26 max68_ _w t a = -40c to +85c 1.62 1.67 1.71 t a = -40c to +125c 1.61 1.67 1.72 max68_ _v t a = -40c to +85c 1.52 1.58 1.62 www.maximintegrated.com maxim integrated 2 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer electrical characteristics stresses beyond those listed under absolute 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. absolute maximum ratings downloaded from: http:///
(v cc = +4.5v to +5.5v for max68_ _l/m, v cc = +2.7v to +3.6v for max68_ _t/s/r, v cc = +2.1v to +2.75v for max68_ _z/y, v cc = +1.53v to +2.0v for max68_ _w/v; t a = -40c to +125c, unless otherwise specified. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units v cc2 reset threshold v th2 z t a = -40c to +85c 2.244 2.313 2.381 v t a = -40c to +125c 2.238 2.313 2.388 y t a = -40c to +85c 2.119 2.188 2.257 t a = -40c to +125c 2.113 2.188 2.263 w t a = -40c to +85c 1.615 1.665 1.715 t a = -40c to +125c 1.611 1.665 1.719 v t a = -40c to +85c 1.525 1.575 1.625 t a = -40c to +125c 1.521 1.575 1.629 i t a = -40c to +85c 1.346 1.388 1.429 t a = -40c to +125c 1.343 1.388 1.433 h t a = -40c to +85c 1.271 1.313 1.354 t a = -40c to +125c 1.268 1.313 1.358 g t a = -40c to +85c 1.077 1.110 1.143 t a = -40c to +125c 1.074 1.110 1.146 f t a = -40c to +85c 1.017 1.050 1.083 t a = -40c to +125c 1.014 1.050 1.086 e t a = -40c to +85c 0.808 0.833 0.858 t a = -40c to +125c 0.806 0.833 0.860 d t a = -40c to +85c 0.762 0.788 0.813 t a = -40c to +125c 0.761 0.788 0.815 reset threshold temperature coefficient 60 ppm/c reset threshold hysteresis 2 x v th mv reset in threshold v rstinth v rstinth falling t a = 0c to +85c 0.615 0.630 0.645 v t a = -40c to +125c 0.610 0.650 reset in hysteresis 2.5 mv reset in input current (note 2) i rstin t a = -40c to +85c -25 +25 na t a = -40c to +125c -100 +100 v cc to reset output delay t rd v cc = v th to (v th - 100mv) 20 s reset in to reset output delay v rsti n = v rstinth to (v rstinth - 30mv) 15 s reset timeout period t rp t a = -40c to +85c 140 200 280 ms t a = -40c to +125c 100 320 reset output low (push-pull or open-drain) v ol v cc 1.0v, i sink = 50a, reset asserted, t a = 0c to +85c 0.3 v v cc 1.2v, i sink = 100a, reset asserted 0.3 v cc 2.55v, i sink = 1.2ma, reset asserted 0.3 v cc 4.25v, i sink = 3.2ma, reset asserted 0.4 www.maximintegrated.com maxim integrated 3 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer electrical characteristics (continued) downloaded from: http:///
note 1: over-temperature limits are guaranteed by design and not production tested. devices tested at +25c. note 2: guaranteed by design and not production tested. (v cc = +4.5v to +5.5v for max68_ _l/m, v cc = +2.7v to +3.6v for max68_ _t/s/r, v cc = +2.1v to +2.75v for max68_ _z/y, v cc = +1.53v to +2.0v for max68_ _w/v; t a = -40c to +125c, unless otherwise specified. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units reset output high (push-pull only) v oh v cc 1.8v, i source = 200a, reset not asserted 0.8 v cc v v cc 3.15v, i source = 500a, reset not asserted 0.8 v cc v cc 4.75v, i source = 800a, reset not asserted 0.8 v cc open-drain reset output leakage current (note 1) i lkg reset not asserted 1.0 a reset output high(push-pull only) v o h v cc 1.0v, i source = 1a, reset asserted, t a = 0c to +85c 0.8 v cc v v cc 1.50v, i source = 100a, reset asserted 0.8 v cc v cc 2.55v, i source = 500a, reset asserted 0.8 v cc v cc 4.25v, i source = 800a, reset asserted 0.8 v cc reset output low(push-pull only) v oh v cc 1.8v, i sink = 500a, reset asserted 0.3 v v cc 3.15v, i sink = 1.2ma, reset asserted 0.3 v cc 4.75v, i sink = 3.2ma, reset asserted 0.3 manual reset input mr input voltage v i l 0.3 v cc v v ih 0.7 v cc mr minimum input pulse 1 s mr glitch rejection 100 ns mr to reset delay 200 ns mr pullup resistance 25 50 75 k? watchdog input watchdog timeout period t wd t a = -40c to +85c 1.12 1.6 2.4 s t a = -40c to +125c 0.80 2.60 wdi pulse width (note 2) t wdi 50 ns wdi input voltage v il 0.3 v cc v v ih 0.7 v cc wdi input current i wd i wdi = v cc , time average 120 160 a wdi = 0, time average -20 -15 www.maximintegrated.com maxim integrated 4 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer electrical characteristics (continued) downloaded from: http:///
(t a = +25c, unless otherwise noted.) 0 4030 20 10 50 60 70 80 90 100 0 80 60 20 40 100 120 140 160 180 200 maximum v rstin transient duration vs. reset threshold overdrive max6826 toc08 reset threshold overdrive (mv), v rstinth - v rstin transient duration ( s) reset occursabove curve 0 10 5 2015 25 -40 0 20 -20 40 60 80 100 120 v rstin to reset output delay vs. temperature max6826 toc07 temperature (c) propagation delay ( s) v rstin falling v rstin = v rstinth - 30mv 0 6040 20 80 100 120 0 80 60 20 40 100 120 140 160 180 200 maximum v cc transient duration vs. reset threshold overdrive max6826 toc06 reset threshold overdrive (mv), v th - v cc transient duration ( s) reset occursabove curve 0.94 0.96 1.000.98 1.041.02 1.06 -40 0 20 -20 40 60 80 100 120 normalized reset threshold delay vs. temperature max6826 toc05 temperature (c) reset threshold (v) 1.0 1.21.1 1.41.3 1.61.5 1.7 1.91.8 2.0 -40 0 20 40 -20 60 80 100 120 watchdog timeout period vs. temperature max6826 toc04 temperature (c) watchdog timeout period (s) 0 10 5 2015 3025 35 -40 0 20 -20 40 60 80 100 120 v cc to reset output delay vs. temperature max6826 toc03 temperature (c) propagation delay ( s) v cc falling, v cc = v th - 100mv 150 170160 190180 210200 220 240230 250 -40 0 20 40 -20 60 80 100 120 reset timeout period vs. temperature max6826 toc02 temperature (c) reset timeout period (ms) 3 54 76 98 10 1211 13 -40 0 20 40 -20 60 80 100 120 supply current vs. temperature max6826 toc01 temperature (c) supply current ( a) v cc = +5v, l version v cc = +3.3v, s version v cc = +1.8v, v version maxim integrated 5 www.maximintegrated.com max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer typical operating characteristics downloaded from: http:///
(t a = +25c, unless otherwise noted.) pin name function max 6826 max 6827 max 6828 max 6829 max 6830 max 6831 1 1 1 1 reset active-low open-drain or push-pull reset output. reset changes from high to low when v cc1 , v cc2 , or reset in input drops below the selected reset threshold, mr is pulled low, or the watchdog triggers a reset. reset remains low for the reset timeout period after all voltages exceed the device reset threshold, mr goes low to high, or the watchdog triggers a reset. 1 1 reset active-high push-pull reset output. reset changes from low to high when v cc1 , v cc2 , or reset in input drops below the selected reset threshold, mr is pulled low, or the watchdog triggers a reset. reset remains high for the reset timeout period after all voltages exceed the device reset threshold, mr goes low to high, or the watchdog triggers a reset. 2 2 2 2 2 2 gnd ground 3 3 3 3 3 3 mr manual - reset input, active-low, internal 50k ? pullup to v cc . pull low to force a reset. reset remains active as long as mr is low and for the reset timeout period after mr goes high. leave unconnected or connect to v cc , if unused. 4 4 4 4 4 4 wdi watchdog input. if wdi remains high or low for longer than the watchdog timeout period, the internal watchdog timer runs out and a reset is triggered for the reset timeout period. the internal watchdog timer clears whenever reset is asserted, the manual reset is asserted, or wdi sees a rising or falling edge. if wdi is left unconnected or is connected to a three-stated buffer output, the watchdog feature is disabled. 2.74 2.782.76 2.822.80 2.84 2.86 2.902.88 2.92 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 voltage output high vs. i source max6826 toc10 i source (ma) v out (v) v cc = +2.9v 0 0.0100.005 0.2000.150 0.3000.250 0.350 0 2 3 1 4 5 6 7 voltage output low vs. i sink max6826 toc09 i sink (ma) v out (v) v cc = +2.9v www.maximintegrated.com maxim integrated 6 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer pin description typical operating characteristics (continued) downloaded from: http:///
figure 1. functional diagram of reset in pin name function max 6826 max 6827 max 6828 max 6829 max 6830 max 6831 5 5 5 reset in input for user-adjustable reset in monitor. high-impedance input for internal reset comparator. connect this pin to an external resistor-divider network to set the reset threshold voltage. 0.63v (typ) threshold. 5 5 5 v cc2 factory-trimmed v cc2 monitor. connect this pin to a secondary power- supply voltage. 6 6 6 6 6 6 v cc supply voltage. input for primary reset threshold monitor. max6826/max6827/max6828 v cc v cc wdi orreset reset mr reset timeout delay generator 1.26v 0.63v watchdog timer watchdog transition detector reset in www.maximintegrated.com maxim integrated 7 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer pin description (continued) downloaded from: http:///
detailed description reset /reset output a microprocessors (ps) reset input starts the p in a known state. the max6826Cmax6831 p supervisory circuits assert a reset to prevent code- execution errors during power-up, power-down, and brownout conditions. whenever a monitored voltage falls below the reset threshold, the reset output asserts low for reset and high for reset. once all monitored voltages exceed their reset thresholds, an internal timer keeps the reset output asserted for the specified reset timeout period (t rp ); after this interval, reset output returns to its original state (figure 3). manual-reset input many p-based products require manual-reset capability, allowing the operator, a test technician, or external logic circuitry to initiate a reset. a logic low on mr asserts a reset. reset remains asserted while mr is low, and for the timeout period (140ms min) after it returns high. mr has an internal 50k? pullup resistor, so it can be left open if not used. this input can be dri- ven with cmos logic levels or with open-drain/collector figure 3. reset timing diagram figure 2. functional diagram of v cc2 v cc 1v 1v t rd v th v th t rd reset gnd reset t rp t rp max6829/max6830/max6831 v cc v cc2 v cc wdi orreset reset mr reset timeout delay generator 1.26v 0.63v watchdog timer watchdog transition detector www.maximintegrated.com maxim integrated 8 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer downloaded from: http:///
outputs. connect a normally open momentary switch from mr to gnd to create a manual-reset function; external debounce circuitry is not required. if mr is dri- ven from long cables or the device is used in a noisy environment, connect a 0.1f capacitor from mr to gnd to provide additional noise immunity. watchdog input the watchdog circuit monitors the ps activity. if the p does not toggle (low to high or high to low) the watchdog input (wdi) within the watchdog timeout period (1.6s nominal), reset asserts for the reset timeout period. the internal 1.6s timer can be cleared by either a reset pulse or by toggling wdi. the wdi can detect pulses as short as 50ns. while reset is asserted, the timer remains cleared and does not count. as soon as reset is released, the timer starts counting (figure 4). disable the watchdog function by leaving wdi uncon - nected or by three-stating the driver connected to wdi. the watchdog input is internally driven low during the first 7/8 of the watchdog timeout period and high for the last 1/8 of the watchdog timeout period. when wdi is left unconnected, this internal driver clears the 1.6s timer every 1.4s. when wdi is three-stated or unconnected, the maximum allowable leakage current is 10a and the maximum allowable load capacitance is 200pf. adjustable reset thresholds the max6826/max6827/max6828 provide a user adjustable input to monitor a second voltage. the threshold voltage at rstin is typically 0.63v. to moni- tor a voltage higher than 0.63v, connect a resistor- divider to the circuit as shown in figure 5. the threshold at v monitor is: monitor_trip r1 r2 v 0.63v r2 + ?? = ???? note that rstin is powered by v cc , and its voltage must therefore remain lower than v cc . applications information watchdog input current the wdi inputs are internally driven through a buffer and series resistor from the watchdog timer (figure 1). when wdi is left unconnected, the watchdog timer is serviced within the watchdog timeout period by a low-high-low pulse from the counter chain. for minimum watchdog input current (minimum overall power consumption), leave wdi low for the majority of the watch-dog timeout period, pulsing it low-high-low once within the first 7/8 of the watchdog timeout period to reset the watchdog timer. if wdi is externally driven high for the majority of the timeout period, up to 160a can flow into wdi. interfacing to ps with bidirectional reset pins since the reset output on the max6828/max6831 is open drain, these devices interface easily with ps that have bidirectional reset pins, such as the motorola 68hc11. connecting the p supervisors reset output directly to the microcontrollers reset pin with a single pullup resistor allows the device to assert a reset (figure 6). figure 6. interfacing open-drain reset to ps with bidirectional reset i/o figure 5. monitoring a voltage figure 4. watchdog timing relationship max6828max6831 reset generator gnd gnd v cc v cc reset reset p v monitor r1r2 v cc v rstin rstin max6826max6827 max6828 v cc t wd t rp t rp t rst wdi reset* *reset is the inverse of reset. www.maximintegrated.com maxim integrated 9 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer downloaded from: http:///
negative-going vcc transients these supervisors are relatively immune to short- duration, negative-going v cc transients (glitches), which usually do not require the entire system to shut down. resets are issued to the p during power-up, power-down, and brownout conditions. the typical operating characteristics show a graph of the maximum v cc transient duration vs. reset threshold overdrive, for which reset pulses are not generated. the graph was produced using negative-going v cc pulses, start - ing at the standard monitored voltage and ending below the reset threshold by the magnitude indicated (reset threshold overdrive). the graph shows the maximum pulse width that a negative-going v cc transient can typically have without triggering a reset pulse. as the amplitude of the transient increases (i.e., goes farther below the reset threshold), the maximum allowable pulse width decreases. typically, a v cc transient that goes 100mv below the reset threshold and lasts for 20s or less will not trigger a reset pulse. ensuring a valid reset output down to v cc = 0 the max6826 C max6831 are guaranteed to operate properly down to v cc = 1v. in applications that require valid reset levels down to v cc = 0, a pulldown resistor to active-low outputs (push/pull only, figure 7) and a pullup resistor to active-high outputs (push/pull only) will ensure that the reset line is valid while the reset output can no longer sink or source current. this scheme does not work with the open-drain outputs of the max6828/max6831. the resistor value used is not critical, but it must be small enough not to load the reset output when v cc is above the reset threshold. for falling slew rates greater than 1v/s, a 100k ? is adequate. watchdog software considerations one way to help the watchdog timer monitor software execution more closely is to set and reset the watchdog input at different points in the program, rather than pulsing the watchdog input high-low-high or low-high-low. this technique avoids a stuck loop, in which the watchdog timer would continue to be reset inside the loop, keeping the watchdog from timing out. figure 8 shows an example of a flow diagram where the i/o driving the watchdog input is set high at the begin - ning of the program, set low at the beginning of every subroutine or loop, then set high again when the pro- gram returns to the beginning. if the program should hang in any subroutine, the problem would quickly be corrected, since the i/o is continually set low and the watchdog timer is allowed to time out, causing a reset or interrupt to be issued. as described in the watchdog input current section, this scheme results in higher time average wdi input current than does leaving wdi low for the majority of the timeout period and periodically pulsing it low-high-low. figure 8. watchdog flow diagram figure 7. reset valid to v cc = ground circuit start set wdi high program code subroutine or program loop set wdi low return max6826max6829 v cc r1100k ? reset gnd www.maximintegrated.com maxim integrated 10 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer downloaded from: http:///
*samples are typically available for standard versions only. for the max6829/max6830/max6831, standard versions require a 2.5k minimum order increment, while nonstandard versions require a 10k minimum order increment and are not typically available in sam - ples. contact factory for availability. max6829/max6830/max6831 v cc v cc2 3.3v 2.5v 1.8v tz 2.5v sv zw 1.8v sh yh wi 1.5v sf yg vf 1.2v sd yd vd 0.9v function active-low reset active-high reset open-drain reset watchdog input manual reset input fixed v cc2 monitor adjustable reset input max6826 ? ? ? ? max6827 ? ? ? ? max6828 ? ? ? ? max6829 ? ? ? ? max6830 ? ? ? ? max6831 ? ? ? ? v cc threshold reset threshold (v) v cc2 threshold reset threshold (v) l 4.63 z 2.313 m 4.38 y 2.188 t 3.08 w 1.665 s 2.93 v 1.575 r 2.63 i 1.388 z 2.32 h 1.313 y 2.19 g 1.110 w 1.67 f 1.050 v 1.58 e 0.833 d 0.788 www.maximintegrated.com maxim integrated 11 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer standard versions table* (continued) selector guide threshold sufix guide downloaded from: http:///
package type package code outline no. land pattern no. 6 sot u6+1 21-0058 90-0175 www.maximintegrated.com maxim integrated 12 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer max6829max6830 max6831 p v cc v cc v cc2 v cc2 gnd manual reset reseti/o coresupply i/o supply reset mr wdi typical operating circuit chip information transistor count: 750 process technology: bicmos package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.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. downloaded from: http:///
revision number revision date description pages changed 3 7/14 no /v opns; removed automotive reference from applications section 1 maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and speciications without n otice 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 guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. ? 2014 maxim integrated products, inc. 13 max6826-max6831 dual ultra-low-voltage sot23 p supervisors with manual reset and watchdog timer revision history for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com. downloaded from: http:///

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