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max705?ax708/max813l low-cost, ? supervisory circuits ________________________________________________________________ maxim integrated products 1 top view 1 2 3 4 8 7 6 5 wdo reset (reset) wdi pfo pfi gnd v cc mr dip/so max705 max706 max813l 1 2 3 4 8 7 6 5 reset reset n.c. pfo pfi gnd v cc mr dip/so MAX707 max708 ( ) are for max813l only. pin configurations continued at end of data sheet. _________________pin configurations v cc pfi mr pfo wdo reset unregulated dc pushbutton switch pfi i/o line interrupt m p max705 max706 max813l max667 +5v dc linear regulator v cc reset nmi __________typical operating circuit call toll free 1-800-998-8800 for free samples or literature. 19-4334; rev. 5; 9/95 _______________general description the max705-max708/max813l microprocessor (?) supervisory circuits reduce the complexity and number of components required to monitor power-supply and battery functions in ? systems. these devices signifi- cantly improve system reliability and accuracy com- pared to separate ics or discrete components. the max705/max706/max813l provide four functions: 1) a reset output during power-up, power-down, and brownout conditions. 2) an independent watchdog output that goes low if the watchdog input has not been toggled within 1.6 seconds. 3) a 1.25v threshold detector for power-fail warning, low-battery detection, or for monitoring a power sup- ply other than +5v. 4) an active-low manual-reset input. the MAX707/max708 are the same as the max705/ max706, except an active-high reset is substituted for the watchdog timer. the max813l is the same as the max705, except reset is provided instead of reset . two supply-voltage monitor levels are available: the max705/MAX707/max813l generate a reset pulse when the supply voltage drops below 4.65v, while the max706/max708 generate a reset pulse below 4.40v. all four parts are available in 8-pin dip, so and ?ax packages. _______________________applications computers controllers intelligent instruments automotive systems critical ? power monitoring ___________________________features ? ?ax package: smallest 8-pin so ? guaranteed reset valid at v cc = 1v ? precision supply-voltage monitor 4.65v in max705/MAX707/max813l 4.40v in max706/max708 ? 200ms reset pulse width ? debounced ttl/cmos-compatible manual-reset input ? independent watchdog timer?.6sec timeout (max705/max706) ? active-high reset output (MAX707/max708/max813l) ? voltage monitor for power-fail or low-battery warning ______________ordering information part temp. range pin-package max705 cpa 8 plastic dip max705csa 0? to +70? 8 so max705c/d 0? to +70? dice* ordering information continued at end of data sheet. * dice are specified at t a = +25c. ** contact factory for availability and processing to mil-std-883. 0? to +70? max705cua 0? to +70? 8 ?ax
max705?ax708/max813l low-cost, ? supervisory circuits 2 _______________________________________________________________________________________ terminal voltage (with respect to gnd) v cc .............................................. -0.3v to 6.0v all other inputs (note 1) ............... -0.3v to (v cc + 0.3v) input current v cc ...................................................... 20ma gnd .................................................... 20ma output current (all outputs) ............................. 20ma continuous power dissipation plastic dip (derate 9.09mw/? above +70?) ....... 727mw so (derate 5.88mw/? above +70?) ............... 471mw ?ax (derate 4.10mw/? above +70?) ............ 330mw cerdip (derate 8.00mw/? above +70?) .......... 640mw operating temperature ranges max70_c__, max813lc__ .................... 0? to +70? max70_e__, max813le__ ................... -40c to +85? max70_mja ................................ -55c to +125? storage temperature range ................ -65c to +160? lead temperature (soldering, 10sec) ................ +300? electrical characteristics (v cc = 4.75v to 5.5v for max705/MAX707/max813l, v cc = 4.5v to 5.5v for max706/max708, t a = t min to t max , unless otherwise noted.) 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. parameter symbol conditions min typ max units operating voltage range v cc max70_c 1.0 5.5 v max813lc 1.1 5.5 max70_e/m, max813le/m 1.2 5.5 reset threshold (note 2) v rt max705, MAX707, max813l 4.50 4.65 4.75 max706, max708 4.25 4.40 4.50 40 mv reset pulse width (note 2) t rs 140 200 280 ms reset output voltage i source = 800? v cc - 1.5 v absolute maximum ratings note 1: the input voltage limits on pfi and mr can be exceeded if the input current is less than 10ma. reset threshold hysteresis (note 2) i sink = 3.2ma 0.4 0.3 0.3 reset output voltage MAX707, max708, i source = 800? v MAX707, max708, i sink = 1.2ma 0.4 0.8 0.9 max813l v cc - 1.5 0.4 watchdog timeout period t wd max705, max706, max813l 1.00 1.60 2.25 sec wdi pulse width t wp v il = 0.4v, v ih = (v cc ) (0.8) 50 ns wdi input threshold 0.8 v 3.5 max70_c, v cc = 1v, i sink = 50? max70_e/m, v cc = 1.2v, i sink = 100? max813lc, i source = 4?, v cc = 1.1v max813le/m, i source = 4?, v cc = 1.2v i source = 800? i sink = 3.2ma low high wdi input current max705, max706, max813l, wdi = v cc 50 150 ? max705, max706, max813l, wdi = 0v -150 -50 wdo output voltage v cc - 1.5 v 0.4 max705, max706, max813l, v cc = 5v max705, max706, max813l, i source = 800? max705, max706, max813l, i sink = 1.2ma v v cc - 1.5 MAX707c, max708c 50 350 MAX707e/m, max708e/m 50 500 supply current i supply max705c, max706c, max813lc 150 350 ? max705e/m, max706e/m, max813le/m 150 500
max705?ax708/max813l low-cost, ? supervisory circuits _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc = 4.75v to 5.5v for max705/MAX707/max813l, v cc = 4.5v to 5.5v for max706/max708, t a = t min to t max , unless otherwise noted.) parameter symbol conditions min typ max units 0.8 v 2.0 mr pull-up current mr = 0v 100 250 600 ? mr pulse width t mr 150 ns low high mr input threshold mr to reset out delay (note 2) t md 250 ns pfi input threshold v cc = 5v 1.20 1.25 1.30 v pfi input current -25.00 0.01 25.00 na pfo output voltage i source = 800? v cc - 1.5 v i sink = 3.2ma 0.4 note 2: applies to both reset in the max705-max708 and reset in the MAX707/max708/max813l.
max705?ax708/max813l low-cost, ? supervisory circuits 4 _______________________________________________________________________________________ __________________________________________typical operating characteristics MAX707/max708/max813l reset output voltage vs. supply voltage 500ms/div v cc 0v reset 0v +5v 1v/div +5v 1v/div t a = +25? gnd reset v cc 330pf 10k max813l reset response time 2 m s/div +5v v cc 0v 0v +4v +4v gnd reset v cc 330pf 10k max705/MAX707 reset output voltage vs. supply voltage 500ms/div v cc 0v reset 0v +5v 1v/div +5v 1v/div v cc gnd reset v cc 2k reset 330pf t a = +25? max705/MAX707 reset response time 2 m s/div v cc +5v reset +5v +4v 1v/div 0v t a = +25? v cc gnd reset v cc 10k reset 30pf power-fail comparator de-assertion response time 400ns/div pfi +1.20v pfo 0v +3v +1.30v v cc = +5v t a = +25? +5v pfo 30pf 1k +1.25v pfi power-fail comparator assertion response time 400ns/div pfi +1.30v pfo +5v 0v +1.20v 1v/div 50mv/div +5v pfo 30pf 1k +1.25v pfi v cc = +5v t a = +25? MAX707 reset, reset assertion 400ns/div 0v +5v reset reset 1v/div v cc = v rt t a = +25? +5v 0v v cc gnd reset 10k 330pf reset 10k 330pf MAX707 reset, reset de-assertion 400ns/div 0v +5v reset reset 2v/div v cc = v rt t a = +25? +5v 0v v cc gnd reset reset 10k 330pf 10k 330pf
max705?ax708/max813l low-cost, ? supervisory circuits _______________________________________________________________________________________ 5 ______________________________________________________________pin description watchdog output pulls low when the internal watch- dog timer finishes its 1.6sec count and does not go high again until the watchdog is cleared. wdo also goes low during low-line conditions. whenever v cc is below the reset threshold, wdo stays low; however, unlike reset , wdo does not have a minimum pulse width. as soon as v cc rises above the reset thresh- old, wdo goes high with no delay. active-high reset output is the inverse of reset . whenever reset is high, reset is low, and vice versa (figure 2). the max813l has a reset output only. active-low reset output pulses low for 200ms when triggered, and stays low whenever v cc is below the reset threshold (4.65v in the max705 and 4.40v in the max706). it remains low for 200ms after v cc rises above the reset threshold or mr goes from low to high (figure 3). a watchdog timeout will not trigger reset unless wdo is connected to mr . watchdog input. if wdi remains high or low for 1.6sec, the internal watchdog timer runs out and wdo goes low (figure 1). floating wdi or connect- ing wdi to a high-impedance three-state buffer dis- ables the watchdog feature. the internal watchdog timer clears whenever reset is asserted, wdi is three- stated, or wdi sees a rising or falling edge. power-fail output goes low and sinks current when pfi is less than 1.25v; otherwise pfo stays high. power-fail voltage monitor input. when pfi is less than 1.25v, pfo goes low. connect pfi to gnd or v cc when not used. function max705/max706 reset 7 8 - wdo 8 - 8 reset - 7 7 no connect n.c. - 6 - wdi 6 - 6 pfo 5 5 5 pfi 4 4 4 0v ground reference for all signals gnd 3 3 3 +5v supply input v cc 2 2 2 name dip/so dip/so dip/so MAX707/max708 pin - 2 1 - 8 7 6 5 4 ?ax 2 - 1 - - 7 6 5 4 ?ax 1 2 - - 8 7 6 5 4 ?ax max813l manual-reset input triggers a reset pulse when pulled below 0.8v. this active-low input has an inter- nal 250? pull-up current. it can be driven from a ttl or cmos logic line as well as shorted to ground with a switch. mr 1 1 1 3 3 3
max705?ax708/max813l _______________detailed description reset output a microprocessor? (??) reset input starts the ? in a known state. whenever the ? is in an unknown state, it should be held in reset. the max705-max708/max813l assert reset during power-up and prevent code execu- tion errors during power-down or brownout conditions. on power-up, once v cc reaches 1v, reset is a guaran- teed logic low of 0.4v or less. as v cc rises, reset stays low. when v cc rises above the reset threshold, an inter- nal timer releases reset after about 200ms. reset puls- es low whenever v cc dips below the reset threshold, i.e. brownout condition. if brownout occurs in the middle of a previously initiated reset pulse, the pulse continues for at least another 140ms. on power-down, once v cc falls below the reset threshold, reset stays low and is guar- anteed to be 0.4v or less until v cc drops below 1v. the MAX707/max708/max813l active-high reset output is simply the complement of the reset output, and is guaranteed to be valid with v cc down to 1.1v. some ?s, such as intel? 80c51, require an active-high reset pulse. watchdog timer the max705/max706/max813l watchdog circuit moni- tors the ?? activity. if the ? does not toggle the watch- dog input (wdi) within 1.6sec and wdi is not three-stat- ed, wdo goes low. as long as reset is asserted or the wdi input is three-stated, the watchdog timer will stay cleared and will not count. as soon as reset is released and wdi is driven high or low, the timer will start counting. pulses as short as 50ns can be detected. typically, wdo will be connected to the non-maskable interrupt input (nmi) of a ?. when v cc drops below the reset threshold, wdo will go low whether or not the watchdog timer has timed out yet. normally this would trigger an nmi interrupt, but reset goes low simultane- ously, and thus overrides the nmi interrupt. if wdi is left unconnected, wdo can be used as a low- line output. since floating wdi disables the internal timer, wdo goes low only when v cc falls below the reset threshold, thus functioning as a low-line output. the max705/max706 have a watchdog timer and a reset output. the MAX707/max708 have both active- high and active-low reset outputs. the max813l has both an active-high reset output and a watchdog timer. manual reset the manual-reset input (mr ) allows reset to be trig- gered by a pushbutton switch. the switch is effectively debounced by the 140ms minimum reset pulse width. mr is ttl/cmos logic compatible, so it can be driven by an external logic line. mr can be used to force a watchdog timeout to generate a reset pulse in the max705/max706/max813l. simply connect wdo to mr . low-cost, ? supervisory circuits 6 _______________________________________________________________________________________ watchdog transition detector watchdog timer timebase for reset and watchdog reset generator v cc 250 m a 8 wdo 7 reset (reset) 5 pfo gnd 3 1.25v 4.65v* * 4.40v for max7o6. ( ) are for max813l only. 6 wdi 1 mr 2 v cc 4 pfi max705 max706 max813l figure 1. max705/max706/max813l block diagram reset generator v cc 250 m a 8 reset 7 reset 5 pfo gnd 3 1.25v 4.65v* * 4.40v for max7o6. 1 mr 2 v cc 4 pfi MAX707 max708 figure 2. MAX707/max708 block diagram
power-fail comparator the power-fail comparator can be used for various pur- poses because its output and noninverting input are not internally connected. the inverting input is internal- ly connected to a 1.25v reference. to build an early-warning circuit for power failure, con- nect the pfi pin to a voltage divider (see typical operating circuit ). choose the voltage divider ratio so that the voltage at pfi falls below 1.25v just before the +5v regulator drops out. use pfo to interrupt the ? so it can prepare for an orderly power-down. __________applications information ensuring a valid reset output down to v cc = 0v when v cc falls below 1v, the max705-max708 reset output no longer sinks current?t becomes an open cir- cuit. high-impedance cmos logic inputs can drift to undetermined voltages if left undriven. if a pull-down resistor is added to the reset pin as shown in figure 5, any stray charge or leakage currents will be drained to ground, holding reset low. resistor value (r1) is not critical. it should be about 100k , large enough not to load reset and small enough to pull reset to ground. monitoring voltages other than the unregulated dc input monitor voltages other than the unregulated dc by connecting a voltage divider to pfi and adjusting the ratio appropriately. if required, add hysteresis by con- necting a resistor (with a value approximately 10 times the sum of the two resistors in the potential divider net- work) between pfi and pfo . a capacitor between pfi and gnd will reduce the power-fail circuit? sensitivity to high-frequency noise on the line being monitored. reset can be asserted on other voltages in addition to the +5v v cc line. connect pfo to mr to initiate a reset pulse when pfi drops below 1.25v. figure 6 shows the max705-max708 configured to assert reset when the +5v supply falls below the reset threshold, or when the +12v supply falls below approximately 11v. monitoring a negative voltage the power-fail comparator can also monitor a negative supply rail (figure 7). when the negative rail is good (a negative voltage of large magnitude), pfo is low, and when the negative rail is degraded (a negative voltage of lesser magnitude), pfo is high. by adding the resis- tors and transistor as shown, a high pfo triggers reset. as long as pfo remains high, the max705- max708/max813l will keep reset asserted ( reset = low, reset = high). note that this circuit? accuracy depends on the pfi threshold tolerance, the v cc line, and the resistors. max705?ax708/max813l low-cost, ? supervisory circuits _______________________________________________________________________________________ 7 t wp t wd t wd t wd +5v 0v wdi +5v 0v wdo +5v 0v reset +5v 0v (reset) t rs ( ) are for max813l only. reset externally triggered by mr figure 3. max705/max706/max813l watchdog timing figure 4. max705/max706 reset , mr , and wdo timing with wdi three-stated. the MAX707/max708/max813l reset output is the inverse of reset shown. t rs t rs +5v 0v reset wdo +5v 0v mr t mr mr externally driven low +5v 0v v cc v rt v rt t md
max705?ax708/max813l interfacing to ?s with bidirectional reset pins ?s with bidirectional reset pins, such as the motorola 68hc11 series, can contend with the max705-max708 reset output. if, for example, the reset output is driven high and the ? wants to pull it low, indeterminate logic levels may result. to correct this, connect a 4.7k resistor between the reset output and the ? reset i/o, as in figure 8. buffer the reset output to other system components. low-cost, ? supervisory circuits 8 _______________________________________________________________________________________ max70_ reset r2 r1 +5v v- v cc pfi gnd mr pfo to m p 100k 100k 2n3904 mr pfo +5v 0v +5v 0v v trip 0v v- figure 7. monitoring a negative voltage max70_ buffered reset to other system components 4.7k v cc gnd reset v cc gnd reset m p figure 8. interfacing to ?s with bidirectional reset i/o 5 1.25 r1 1.25 v trip r2 ,v trip 0 - = - < max70_ reset r1 figure 5. reset valid to ground circuit max70_ reset 130k 1% parameter min typ max unit +12v reset threshold at +25? 10.67 10.87 11.50 v 1m 1% +5v +12v v cc pfi gnd mr pfo to m p figure 6. monitoring both +5v and +12v
max705?ax708/max813l low-cost, ? supervisory circuits _______________________________________________________________________________________ 9 __ordering information (continued) * dice are specified at t a = +25 c. **contact factory for availability and processing to mil-std-883. 8 cerdip** -55? to +125? max813lmja 8 plastic dip 0? to +70? max708 cpa 8so 0? to +70? max708csa dice* 0? to +70? max708c/d 8 plastic dip -40? to +85? max708epa 8so -40? to +85? max708esa 8 cerdip** -55? to +125? max708mja 8 plastic dip 0? to +70? max813l cpa 8so 0? to +70? max813lcsa dice* 0? to +70? max813lc/d 8 plastic dip -40? to +85? max813lepa 8so -40? to +85? max813lesa 8 cerdip** -55? to +125? MAX707mja 8so -40? to +85? MAX707esa 8 plastic dip -40? to +85? MAX707epa dice* 0? to +70? MAX707c/d 8so 0? to +70? MAX707csa 8 plastic dip 0? to +70? MAX707 cpa 8 cerdip** -55? to +125? max706mja 8so -40? to +85? max706esa 8 plastic dip -40? to +85? max706epa 8 cerdip** -55? to +125? max705mja 8so -40? to +85? max705esa 8 plastic dip -40? to +85? max705epa pin-package temp. range part dice* 0? to +70? max706c/d 8so 0? to +70? max706csa 8 plastic dip 0? to +70? max706 cpa 8 ?ax 0? to +70? max706cua 8 ?ax 0? to +70? MAX707cua 8 ?ax 0? to +70? max708cua 8 ?ax 0? to +70? max813lcua _______pin configuration (continued) top view 1 2 3 4 8 7 6 5 wdo reset wdi pfo pfi pfi v cc mr m max max705 max706 max813l 1 2 3 4 8 7 6 5 n.c. gnd gnd v cc mr m max MAX707 max708 ( ) are for max813l only. (reset) reset pfo reset ____________________chip topography ( ) are for max813l only. transistor count: 572 substrate must be left unconnected. reset (reset) gnd wdo/reset pfi 0.051" (1.30mm) 0.074" (1.88mm) wdi/n.c. pfo v cc mr
max705?ax708/max813l low-cost, ? supervisory circuits 10 ______________________________________________________________________________________ _______________________________________________________package information l a c a1 b dim a a1 b c d e e h l a min 0.036 0.004 0.010 0.005 0.116 0.116 0.188 0.016 0 max 0.044 0.008 0.014 0.007 0.120 0.120 0.198 0.026 6 min 0.91 0.10 0.25 0.13 2.95 2.95 4.78 0.41 0 max 1.11 0.20 0.36 0.18 3.05 3.05 5.03 0.66 6 inches millimeters 8-pin m max micromax small-outline package 0.65 0.0256 a e e h d 0.101mm 0.004 in 21-0036d
max705?ax708/max813l low-cost, ? supervisory circuits ______________________________________________________________________________________ 11 max1232 4.37/4.62 250 44 4 0.15/0.6/1.2 4 0.2(0.05) 8 1.71 max690a/692a 4.65/4.40 140 44 1.6 4 10 400 4 0.35(0.2) 5(0.05) 8 3.26 max690r/s/t 2.63/2.93/3.08 140 44 1.6 4 6 400 4 0.5(0.4) 1(0.4) 8 3.23 max691a/693a 4.65/4.40 140/adj. 44 4 1.6/adj. 44 1.2 25 4 /10ns 44 0.1(0.035) 5(0.04) 16 3.61 max1691 the max1691 is a module with the max691a and a 125mah lithium battery 16 ?? max696 adj. 35/adj. 44 1.6/adj. 44 4 4 16 3.55 max697 adj. 35/adj. 44 1.6/adj. 444 16 3.58 max700 4.65/adj. 200 44 4 0.2(0.1) 8 2.17 max703/704 4.65/4.40 140 44 4 10 400 44 0.35(0.2) 5(0.05) 8 1.38* max704r/s/t 2.63/2.93/3.08 140 44 4 6 400 44 0.5(0.4) 1(0.4) 8 2.93 max705/706 4.65/4.40 140 44 1.6 444 0.35(0.2) 8 1.02* max706p 2.63 140 44 1.6 444 0.35(0.2) 8 1.71 max706r/s/t 2.63/2.93/3.08 140 44 1.6 444 0.35(0.2) 8 1.71 MAX707/708 4.65/4.40 140 44 4 4 4 0.35(0.2) 8 0.88* max708r/s/t 2.63/2.93/3.08 140 44 4 4 4 0.35(0.2) 8 1.63 max791 4.65 140 44 4 1 44 1.2 25 4 /10ns 4 444 0.15(0.06) 5(0.04) 16 3.90 max792l/m/r/s/t 4.65/4.40/ 140 44 4 1 44 /10ns 444 0.15(0.07) 16 3.42 2.63/2.93/3.08 max793r/s/u/t 2.63/2.93/3.07/3.08 140 44 4 1.6 44 tbd tbd 4444 tbd tbd 16 ?? max794 adj. 140 44 4 1.6 44 tbd tbd 4444 tbd tbd 16 ?? max795r/s/u/t 2.63/2.93/3.07/3.08 140 44 4 tbd tbd 44 tbd tbd 8 ?? max800l/m 4.60/4.40 140 44 4 1.6/adj. 44 1.2 25 4 /10ns 4 /2% 4 0.1(0.035) 5(0.04) 16 3.88 max801l/n/m 4.68/4.58/4.43 140 4 /1.5% 4 1.6 4 tbd tbd 4 tbd tbd 8 ?? max802l/m/r/s/t 4.60/4.40/ 140 44 1.6 4 10 400 4 /2% 0.35(0.2) 5(0.05) 8 3.59 2.63/2.93/3.08 max804r/s/t 2.63/2.93/3.08 140 44 1.6 4 6 400 4 /2% 0.5(0.4) 1(0.4) 8 3.66 max805l/m/r/s/t 4.65/4.40/ 140 44 1.6 4 10 400 4 0.35(0.2) 5(0.05) 8 3.26 2.63/2.93/3.08 max806r/s/t 2.63/2.93/3.08 140 44 4 4 6 400 4 /2% 4 0.5(0.4) 1(0.4) 8 3.90 max807l/n/m 4.68/4.58/4.43 140 4 /1.5% 4 /1.5% 4 1.6 44 tbd tbd 4 4 444 tbd tbd 8 ?? max808l/n/m 4.68/4.58/4.43 140 4 /1.5% 44 tbd tbd 44 tbd tbd 16 ?? max809l/m/r/s/t 4.65/4.40/ 140 44 0.06(0.024) 3 ?? 2.63/2.93/3.08 max810l/m/r/s/t 4.65/4.40/ 140 44 0.06(0.024) 3 ?? 2.63/2.93/3.08 max813l 4.65 140 44 1.6 44 /2% 4 0.35(0.2) 8 1.02* max814k/l/n/t 4.80/4.70/4.55/3.03 140 4 /1% 4 /1% 44 /2% 44 tbd tbd 8 ?? max815k/l/n/t 4.80/4.70/4.55/3.03 140 4 /1% 4 1.6 44 /2% 4 tbd tbd 8 ?? max816 adj./1% 140 44 4 4 /2% 4 tbd tbd 8 ?? max820l/m/r/s/t 4.65/4.40/ 140 44 4 1 44 /10ns 4 /2% 44 0.15(0.07) 16 3.82 2.63/2.93/3.08 mxd1210 4.37/4.62 4 2.5 667 4 0.5(0.23) 0.1(0.002) 8 2.44 ___________________________________________p supervisory circuits price ? 1000-up ($) part number nominal reset threshold (v) minimum reset pulse width (ms) active-low reset active-high reset nominal watchdog timeout period (sec), if available separate watchdog output backup-battery switch v cc -to-v out on resistance max ( ) c e write protect v batt -to-v out on resistance max ( ) manual-reset input low-line output battery-on output power-fail comparator i supply operating mode ma max (typ) i supply backup mode ? max (typ) pins r e s e t valid to v cc = 1v ? prices provided are for design guidance and are fob usa (unless otherwise noted). international prices will differ due to local duties, taxes, and exchange rates. ?? future productcontact factory for pricing and availability. specifications are preliminary. * 25,000 pc. price, factory direct
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. 12 __________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 (408) 737-7600 1995 maxim integrated products printed usa is a registered trademark of maxim integrated products. max705?ax708/max813l low-cost, ? supervisory circuits

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