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general description the max7500?ax7504 temperature sensors accu-rately measure temperature and provide an overtem- perature alarm/interrupt/shutdown output. these devices convert the temperature measurements to digi- tal form using a high-resolution, sigma-delta, analog-to- digital converter (adc). communication is through an i 2 c-compatible 2-wire serial interface. the max7500/ max7501/max7502 integrate a timeout feature thatoffers protection against i 2 c bus lockups. the max7503/max7504 do not include the timeout feature.the 2-wire serial interface accepts standard write byte, read byte, send byte, and receive byte commands to read the temperature data and configure the behavior of the open-drain overtemperature shutdown output. the max7500 features three address select lines, while the max7501?ax7504 feature two address select lines and a reset input. the max7500/max7501/ max7502s?3.0v to 5.5v supply voltage range, low250? supply current, and a lockup-protected i 2 c-com- patible interface make them ideal for a wide range ofapplications, including personal computers (pcs), elec- tronic test equipment, and office electronics. the max7500?ax7504 are available in 8-pin ?ax and so packages and operate over the -55? to+125? temperature range. applications pcsservers office electronics electronic test equipment industrial process control features ? timeout prevents bus lockup (max7500,max7501, max7502) ? hardware reset for added protection ? i 2 c bus interface ? 3.0v to 5.5v supply voltage range ? 250 a (typ) operating supply current ? 3 a (typ) shutdown supply current ? ?.5? (max) temperature accuracy (-25? to+100?, 3- ) ? max, so packages save space ? separate open-drain os output operates asinterrupt or comparator/thermostat input ? register readback capability ? improved lm75 second source max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection ________________________________________________________________ maxim integrated products 1 ordering information/ selector guide 19-3382; rev 4; 10/10 evaluation kit available part temp range pin-package reset timeout max7500 msa -55? to +125? 8 so x x ordering information/selector guide continued at end of data sheet. pin configurations appear at end of data sheet. ?ax is a registered trademark of maxim integrated products, inc. for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim's website at www.maxim-ic.com. max7501 max7502 max7503 max7504 +3.0v to +5.5v +3.0v to +5.5v +v s a0a1 reset gnd os scl sda to i 2 c master 4.7k +v s a0 a1a2 gnd os scl sda to i 2 c master 4.7k max7500 typical application circuits downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics(+v s = +3.0v to +5.5v, t a = -55 c to +125 c, unless otherwise noted. typical values are at +v s = +3.3v, t a = +25 c.) (notes 4, 5) 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. note 1: absolute maximum ratings indicate limits beyond which damage to the device may occur. dc and ac electrical specifica-tions do not apply when operating the device beyond its rated operating conditions. note 2: when the input voltage (v i ) at any pin exceeds the power supplies (v i < v gnd or v i > + v s ), the current at that pin should be limited to 5ma. the 20ma maximum package input current rating limits the number of pins that can safely exceed the powersupplies with an input current of 5ma to 4. note 3: human body model, 100pf discharged through a 1.5k resistor. (note 1)+v s to gnd ............................................................. -0.3v to +6v os, sda, scl to gnd.......................................... -0.3v to +6.0v all other pins to gnd ................................ -0.3v to (+v s + 0.3v) input current at any pin (note 2) ..................................... +5ma package input current (note 2) ..................................... +20ma esd protection (all pins, human body model, note 3)... 2000v continuous power dissipation (t a = +70 c) 8-pin ?ax (derate 4.5mw/ c above +70 c) ............ 362mw 8-pin so (derate 5.9mw/ c above +70 c)................. 471mw operating temperature range ....................... -55 c to +125 c junction temperature .................................................... +150 c storage temperature range ........................... -65 c to +150 c lead temperature (soldering, 10s) ............................... +300 c soldering temperature (reflow) lead(pb)-free.............................................................. +260 c containing lead(pb) .................................................... +240 c parameter symbol conditions min typ max units -25c t a +100c -2.0 ?.0 accuracy, 6- -55c t a +125c -3.0 ?.0 c -25c t a +100c -1.5 +1.5 accuracy, 3- (note 5) -55c t a +125c -2.0 +2.0 c resolution 9 bits conversion time (note 6) 100 ms i 2 c inactive 0.25 0.5 ma shutdown mode, +v s = 3v 3 quiescent supply current shutdown mode, +v s = 5v 5 ? +v s supply voltage range 3.0 5.5 v os output saturation voltage i out = 4.0ma (note 7) 0.8 v os delay (note 8) 1 6 conver- sions t os default temperature (note 9) 80 c t hyst default temperature (note 9) 75 c logic (sda, scl, a0, a1, a2) input high voltage v ih +v s x 0.7 v input low voltage v il +v s x 0.3 v input high current i ih v in = 5v 0.005 1.0 ? input low current i il v in = 0v 0.005 1.0 ? input capacitance all digital inputs 5 pf output high current v in = 5v 1 a output low voltage i ol = 3ma 0.4 v downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection _______________________________________________________________________________________ 3 note 4: all parameters are measured at +25?. values over the temperature range are guaranteed by design. note 5: there are no industry-wide standards for temperature accuracy specifications. these values allow comparison to ven-dors who use 3- limits. note 6: this specification indicates how often temperature data is updated. the devices can be read at any time without regardto conversion state, while yielding the last conversion result. note 7: for best accuracy, minimize output loading. higher sink currents can affect sensor accuracy due to internal heating. note 8: os delay is user programmable up to six ?ver-limit?conversions before os is set to minimize false tripping in noisy environments. note 9: default values set at power-up. note 10: all timing specifications are guaranteed by design. note 11: a master device must provide a hold time of at least 300ns for the sda signal to bridge the undefined region of scl?falling edge. note 12: c b = total capacitance of one bus line in pf. tested with c b = 400pf. note 13: input filters on sda, scl, and a_ suppress noise spikes less than 50ns. note 14: holding the sda line low for a time greater than t timeout causes the devices to reset sda to the idle state of the serial bus communication (sda set high). electrical characteristics (continued)(+v s = +3.0v to +5.5v, t a = -55 c to +125 c, unless otherwise noted. typical values are at +v s = +5v, t a = +25 c.) (notes 4, 5) parameter symbol conditions min typ max units i 2 c-compatible timing (note 10) serial clock frequency f scl bus timeout inactive dc 400 khz minimum reset pulse width 1 s bus free time between stopand start conditions t buf 1.3 ? start condition hold time t hd:sta 0.6 ? stop condition setup time t su:sto 90% of scl to 10% of sda 100 ns clock low period t low 1.3 ? clock high period t high 0.6 ? start condition setup time t su:sta 90% of scl to 90% of sda 100 ns data setup time t su:dat 10% of sda to 10% of scl 100 ns data hold time t hd:dat 10% of scl to 10% of sda (note 11) 0 0.9 ? maximum receive scl/sda risetime t r 300 ns minimum receive scl/sda risetime t r (note 12) 20 + 0.1 x c b ns maximum receive scl/sda falltime t f 300 ns minimum receive scl/sda falltime t f (note 12) 20 + 0.1 x c b ns transmit sda fall time t f (note 12) 20 + 0.1 x c b 250 ns pulse width of suppressed spike t sp (note 13) 0 50 ns sda time low for reset of serialinterface t timeout max7500/max7501/max7502 (note 14) 150 300 ms downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection 4 _______________________________________________________________________________________ typical operating characteristics (t a = +25?, unless otherwise noted.) quiescent supply current vs. temperature max7500 toc01 temperature ( c) quiescent supply current ( a) 95 65 35 5 -25 240 250 260 270 280 290 300230 -55 125 +v s = +5v +v s = +3v shutdown supply current ( a) 1 2 3 4 5 60 shutdown supply current vs. temperature max7500 toc02 temperature ( c) 95 65 35 5 -25 -55 125 +v s = +5v +v s = +3v accuracy vs. temperature accuracy ( c) -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 -2.0 max7500 toc03 temperature ( c) 95 65 35 5 -25 -55 125 4 typical parts pin description pin max7500 max7501 max7504 name function 1 1 sda serial data input/output line. open drain. connect sda to a pullup resistor. 2 2 scl serial data clock input. open drain. connect scl to a pullup resistor. 3 3 os overtemperature shutdown output. open drain. connect os to a pullup resistor. 4 4 gnd ground 5a 2 2-wire interface address input. connect a2 to gnd or +v s to set the desired i 2 c bus address. do not leave unconnected (see table 1). ? reset active-low reset input. pull reset low for longer than the minimum reset pulse width to reset the i 2 c bus and all internal registers to their por values. 66a 1 2-wire interface address input. connect a1 to gnd or +v s to set the desired i 2 c bus address. do not leave unconnected (see table 1). 77a 0 2-wire interface address input. connect a0 to gnd or +v s to set the desired i 2 c bus address. do not leave unconnected (see table 1). 88+ v s positive supply voltage input. bypass to gnd with a 0.1? bypass capacitor. detailed description the max7500?ax7504 temperature sensors measuretemperature, convert the data into digital form using a sigma-delta adc, and communicate the conversion results through an i 2 c-compatible 2-wire serial inter- face. these devices accept standard i 2 c commands to read the data, set the overtemperature alarm (os) trip thresholds, and configure other characteristics. themax7500 features three address select lines (a0, a1, a2) while the max7501?ax7504 feature two address select lines (a0, a1) and a reset input. the max7500?ax7504 operate from +3.0v to +5.5v sup-ply voltages and consume 250? of supply current. downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection _______________________________________________________________________________________ 5 i 2 c-compatible bus interface from a software perspective, the max7500?ax7504appear as a set of byte-wide registers that contain tem- perature data, alarm threshold values, and control bits. a standard i 2 c-compatible 2-wire serial interface reads temperature data and writes control bits and alarmthreshold data. each device responds to its own i 2 c slave address, which is selected using a0, a1, and a2.see table 1. the max7500?ax7504 employ four standard i 2 c protocols: write byte, read byte, send byte, and receive byte (figures 1, 2, and 3). the shorter receive byte pro-tocol allows quicker transfers, provided that the correct data register was previously selected by a read-byte instruction. use caution when using the shorter proto- cols in multimaster systems, as a second master could overwrite the command byte without informing the first master. the max7500 has eight different slave addresses available; therefore, a maximum of eight max7500 devices can share the same bus. the max7501?ax7504 each have four different slave addresses available. device bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 max7500 1 0 0 1 a2 a1 a0 rd/ w max7501 1 0 0 1 1 a1 a0 rd/ w max7502 1 0 0 1 0 a1 a0 rd/ w max7503 1 0 0 1 1 a1 a0 rd/ w max7504 1 0 0 1 0 a1 a0 rd/ w table 1. i 2 c slave addresses t buf t su:sto t hd:sta t su:sta t hd:dat t high t low t su:dat t hd:sta scl sda t f t r acknowledge (a) stop condition (p) start condition (s) start condition (s) repeated start condition (sr) parameters are measured from 10% to 90%. figure 1. serial bus timing downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection 6 _______________________________________________________________________________________ address byte address byte address byte (a) typical pointer set followed by immediate read from configuration register (b) configuration register write (c) t high and t low write pointer byte pointer byte pointer byte most-significant data byte least-significant data byte configuration byte address byte data byte ack by max7500 max7504 ack by max7500 max7504 ack by max7500 max7504 ack by max7500 max7504 ack by max7500 max7504 ack by max7500 max7504 ack by max7500 max7504 start by master start by master start by master repeat start by master no ack by master stop cond by master ack by max7500 max7504 ack by max7500 max7504 stop cond by master stop cond by master ack by max7500 max7504 figure 2. i 2 c-compatible timing diagram (write) downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection _______________________________________________________________________________________ 7 address byte address byte address byte address byte data byte (a) typical 2-byte read from preset pointer location such as temp, t high , t low . (b) typical pointer set followed by immediate read for 2-byte register such as temp, t high , t low . (c) typical 1-byte read from configuration register with preset pointer. most-significant data byte least-significant data byte pointer byte most-significant data byte least-significant data byte ack by max7500 max7504 ack by master ack by max7500 max7504 ack by max7500 max7504 ack by master ack by max7500 max7504 ack by master start by master start by master repeat start by master start by master stop cond by master stop cond by master stop cond by master no ack by master no ack by master no ack by master figure 3. i 2 c-compatible timing diagram (read) downloaded from: http:///
max7500?ax7504 register descriptions the max7500?ax7504 have an internal pnp-junction-based temperature sensor whose analog output is con- verted to digital form using a 9-bit sigma-delta adc. the measured temperature and temperature configura- tions are controlled by the temperature, configuration, t hyst , and t os registers. see table 2. temperature register read the measured temperature through the tempera-ture register. the temperature data format is 9 bits, two? complement, and the register is read out in 2 bytes: an upper byte and a lower byte. bit d15 is the sign bit. when bit d15 is 1, the temperature reading is negative. when bit d15 is zero, the temperature read- ing is positive. bits d14?7 contain the temperature data, with the lsb representing 0.5 c and the msb representing 64 c (see table 3). the msb is transmit- ted first. the last 7 bits of the lower byte, bits d6?0,are don? cares. when reading the temperature register, bits d6?0 must be ignored. when the measured tem-perature is greater than +127.5 c, the value stored in the temperature register is clipped to 7f8h. when themeasured temperature is below -64 c, the value in the temperature register is clipped to bf8h.during the time of reading the temperature register, any changes in temperature are ignored until the read is completed. the temperature register is updated upon completion of the next conversion. table 3 lists the temperature register definition. configuration register the 8-bit configuration register sets the fault queue, ospolarity, shutdown control, and whether the os output functions in comparator or interrupt mode. when writing to the configuration register, set bits d7, d6, and d5 to zero. see table 5. bits d4 and d3, the fault queue bits, determine the number of faults necessary to trigger an os condition. see table 6. the number of faults set in the queue must occur to trip the os output. the fault queue prevents os false tripping in noisy environments. set bit d2, the os polarity bit, to zero to force the os output active low. set bit d2 to 1 to set the os output polarity to active high. os is an open-drain output under all conditions and requires a pullup resistor to output a high voltage. see figure 4. set bit d1, the comparator/interrupt bit to zero to run the overtemperature shutdown block in comparator mode. in comparator mode, os is asserted when the temperature rises above the t os value. os is deassert- ed when the temperature drops below the t hyst value. digital temperature sensors and thermal watchdog with bus lockup protection 8 _______________________________________________________________________________________ register name address (hex) por state (hex) por state (binary) por state ( c) read/ write temperature 00 read only configuration 01 00 0000 0000 r/ w t hyst 02 4b0 0100 1011 0 75 r/ w t os 03 500 0101 0000 0 80 r/ w table 2. register functions upper byte lower byte d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 sign bit 1= negative 0 = positive msb 64 c 32 c16 c8 c4 c2 c1 c lsb 0.5 c xxxxxxx digital output temperature ( c) binary hex +125 0111 1101 0xxx xxxx 7d0x +25 0001 1001 0xxx xxxx 190x +0.5 0000 0000 1xxx xxxx 008x 0 0000 0000 0xxx xxxx 000x -0.5 1111 1111 1xxx xxxx ff8x -25 1110 0111 0xxx xxxx e70x -55 1100 1001 0xxx xxxx c90x table 3. temperature register definition table 4. temperature data output x = don? care. downloaded from: http:///
see figure 4. set bit d1 to 1 to run the overtemperatureshutdown block in interrupt mode. os is asserted in interrupt mode when the temperature rises above the t os value or falls below the t hyst value. os is deasserted only after performing a read operation.set bit d0, the shutdown bit, to zero for normal opera- tion. set bit d0 to 1 to shut down the max7500 max7504 internal blocks, dropping the supply current to 3?. the i 2 c interface remains active as long as the shutdown bit is set. the t os , t hyst , and configuration registers can still be written to and read from while inshutdown. t os and t hyst registers in comparator mode, the os output behaves like a ther-mostat. the output asserts when the temperature rises above the limit set in the t os register. the output deasserts when the temperature falls below the limit setin the t hyst register. in comparator mode, the os output can be used to turn on a cooling fan, initiate an emer-gency shutdown signal, or reduce system clock speed. in interrupt mode, exceeding t os also asserts os. os remains asserted until a read operation is performed onany of the registers. once os has asserted due to crossing above t os and is then reset, it is asserted again only when the temperature drops below t hyst . the output remains asserted until it is reset by a read.putting the max7500?ax7504 into shutdown mode also resets os. the t os and t hyst registers are accessed with 2 bytes, with bits d15?7 containing the data. bitsd6?0 are don? cares when writing to these two regis- ters and read-back zeros when reading from these reg- isters. the lsb represents 0.5 c while the msb represents 64 c. see table 7. max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection _______________________________________________________________________________________ 9 d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 fault queue fault queue os polarity comparator/ interrupt shutdown table 5. configuration register definition d4 d3 no. of faults 0 0 1 (por state) 01 2 10 4 11 6 table 6. configuration register faultqueue bits t os t hyst os output (comparator mode) os set active low os output (interrupt mode) os set active low read operation read operation read operation temperature figure 4. os timing diagram upper byte lower byte command d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 write sign bit 1 = negative 0 = positive msb 64 c 32 c16 c8 c4 c2 c1 c lsb 0.5 c xxxx x xx read sign bit 1 = negative 0 = positive msb 64 c 32 c16 c8 c4 c2 c1 c lsb 0.5 c 0000 0 00 table 7. t os and t hyst register definitions x = don? care. downloaded from: http:///
max7500?ax7504 shutdown set bit d0 in the configuration register to 1 to place themax7500?ax7504 in shutdown mode and reduce supply current to 3?. power-up and power-down the max7500?ax7504 power up to a known state, asindicated in table 2. some of these settings are sum- marized below: comparator mode ? os = +80 c ? hyst = +75 c os active low pointer = 00 internal registers the max7500?ax7504s?pointer register selectsbetween four data registers. see figure 5. at power-up, the pointer is set to read the temperature register at address 00. the pointer register latches the last loca- tion to which it was set. all registers are read and write, except the temperature register, which is read only. write to the configuration register by writing an address byte, a data pointer byte, and a data byte. if 2 data bytes are written, the second data byte overrides the first. if more than 2 data bytes are written, only the first 2 bytes are recognized while the remaining bytes are ignored. the t os and t hyst registers require 1 address byte and 1 pointer byte and 2 data bytes. ifonly 1 data byte is written, it is saved in bits d15?8 of the respective register. if more than 2 data bytes are written, only the first 2 bytes are recognized while the remaining bytes are ignored. read from the max7500?ax7504 in one of two ways. if the location latched in the pointer register is set from the previous read, the new read consists of an address byte, followed by retrieving the corresponding number of data bytes. if the pointer register needs to be set to a new address, perform a read operation by writing an address byte, pointer byte, repeat start, and another address byte. an inadvertent 8-bit read from a 16-bit register, with the d7 bit low, can cause the max7500?ax7504 to stop in a state where the sda line is held low. ordinarily, this would prevent any further bus communication until the master sends nine additional clock cycles or sda goes high. at that time, a stop condition resets the device. with the max7500/max7501/max7502, if the additional clock cycles are not generated by the master, the busresets and unlocks after the bus timeout period has elapsed. the max750?ax7504 can be reset by pulsing reset low. bus timeout communication errors sometimes occur due to noisepickup on the bus. in the worst case, such errors can cause the slave device to hold the data line low, there- by preventing other devices from communicating over the bus. the max7500/max7501/max7502s?internal bus timeout circuit resets the bus and releases the data line if the line is low for more than 250ms. when the bus timeout is active, the minimum serial clock frequency is limited to 6hz. reset the reset input on the max7503/max7504 provides a way to reset the i 2 c bus and all the internal registers to their initial por values. to reset, apply a low pulse witha duration of at least 1? to the reset input. digital temperature sensors and thermal watchdog with bus lockup protection 10 ______________________________________________________________________________________ max7504 +v s a2/reset a1 a0 sda scl os smbus interface block pointer register (selects register for communication) data address register select gnd temperature (read only) pointer = 0000 0000 t os set point (read/write) pointer = 0000 0011 t hyst set point (read/write) pointer = 0000 0010 configuration (read/write) pointer = 0000 0001 figure 5. block diagram downloaded from: http:///
applications information digital noise the max7500?ax7504 feature an integrated lowpassfilter on both the scl and the sda digital lines to miti- gate the effects of bus noise. although this filtering makes communication robust in noisy environments, good layout practices are always recommended. minimize noise coupling by keeping digital traces away from switching power supplies. ensure that digital lines containing high-speed data communications cross at right angles to the sda and scl lines. excessive noise coupling into the sda and scl lines on the max7500?ax7504?pecifically noise with amplitude greater than 400mv p-p (the max7500 max7504s?typical hysteresis), overshoot greater than300mv above +v s , and undershoot more than 300mv below gnd?ay prevent successful serial communi-cation. serial bus no-acknowledge is the most common symptom, causing unnecessary traffic on the bus. care must be taken to ensure proper termination within a system with long pcb traces or multiple parts on the bus. resistance can be added in series with the sda and scl lines to further help filter noise and ringing. if it proves to be necessary, a 5k resistor should be placed in series with the scl line, placed as close aspossible to scl. this 5k resistor, with the 5pf to 10pf stray capacitance of the max7500?ax7504 provide a6mhz to 12mhz lowpass filter, which is sufficient filter- ing in most cases. chip information process: cmos max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection ______________________________________________________________________________________ 11 ordering information/ selector guide (continued) part temp range pin-package reset timeout max7500msa+ -55? to +125? 8 so x x max7500mua -55? to +125? 8 ?ax x x max7500mua+ -55? to +125? 8 ?ax x x max7501 msa -55? to +125? 8 so x x max7501msa+ -55? to +125? 8 so x x max7501mua -55? to +125? 8 ?ax x x max7501mua+ -55? to +125? 8 ?ax x x max7502 msa -55? to +125? 8 so x max7502msa+ -55? to +125? 8 so x max7502mua -55? to +125? 8 ?ax x max7502mua+ -55? to +125? 8 ?ax x max7503 msa -55? to +125? 8 so x max7503msa+ -55? to +125? 8 so x max7503mua -55? to +125? 8 ?ax x max7503mua+ -55? to +125? 8 ?ax x max7504 msa -55? to +125? 8 so x max7504msa+ -55? to +125? 8 so x max7504mua -55? to +125? 8 ?ax x max7504mua+ -55? to +125? 8 ?ax x + denotes a lead(pb)-free/rohs-compliant package. 12 34 8 7 6 5 +v s a0 a1a2 gnd os scl sda max7500 max, so 12 34 8 7 6 5 +v s a0 a1reset gnd os scl sda max7501 max7504 max, so top view pin configurations downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection 12 ______________________________________________________________________________________ package type package code outline no. land pattern no. 8 so s8-2 21-0041 90-0096 8 ?ax u8-1 21-0036 90-0092 package information for the latest package outline information and land patterns, 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 th e package regardless of rohs status. downloaded from: http:///
max7500?ax7504 digital temperature sensors and thermal watchdog with bus lockup protection 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. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 13 2010 maxim integrated products maxim is a registered trademark of maxim integrated products. revision history reision number reision date description pages changed 0 8/04 initial release of max7500 1 10/04 initial release of max7501/max7502 all 2 6/05 initial release of max7503/max7504 all 3 8/08 various corrections and edits to clarify specifications; added tpical application circuits 1C4, 11, 12, 13 4 10/10 removed the ul certified bullet from the features section as the parts have never been certified 1 downloaded from: http:///

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