MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits _______________General Description The MAX705-MAX708/MAX813L microprocessor (µP) supervisory circuits reduce the complexity and number of components required to monitor power-supply and battery functions in µP systems. These devices significantly improve system reliability and accuracy compared 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 supply 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 µMAX® packages. _______________________Applications Computers Controllers Intelligent Instruments Automotive Systems Critical µP Power Monitoring ___________________________Features o Available in Tiny µMAX Package o Guaranteed RESET Valid at VCC = 1V o Precision Supply-Voltage Monitor 4.65V in MAX705/MAX707/MAX813L 4.40V in MAX706/MAX708 o 200ms Reset Pulse Width o Debounced TTL/CMOS-Compatible Manual-Reset Input o Independent Watchdog Timer—1.6s Timeout (MAX705/MAX706) o Active-High Reset Output (MAX707/MAX708/MAX813L) o Voltage Monitor for Power-Fail or Low-Battery Warning ______________Ordering Information PART TEMP RANGE MAX705CPA 0°C to +70°C 8 Plastic DIP MAX705CSA 0°C to +70°C 8 SO MAX705CUA 0°C to +70°C 8 µMAX MAX705C/D 0°C to +70°C Dice* Ordering Information continued at end of data sheet. * Dice are specified at TA = +25°C. ** Contact factory for availability and processing to MIL-STD-883. Devices in PDIP, SO and µMAX packages are available in both leaded and lead-free packaging. Specify lead free by adding the + symbol at the end of the part number when ordering. Lead-free not available for CERDIP package. _________________Pin Configurations TOP VIEW µMAX is a registered trademark of Maxim Integrated Products, Inc. MR __________Typical Operating Circuit VCC 1 2 GND 3 MAX705 MAX706 MAX813L PFI 4 UNREGULATED DC MAX667 +5V DC LINEAR REGULATOR RESET PFI MAX705 WDO MAX706 MR MAX813L PFO PFI PUSHBUTTON SWITCH 8 WDO 7 RESET (RESET) 6 WDI 5 PFO DIP/SO µP VCC PIN-PACKAGE VCC RESET I/O LINE NMI INTERRUPT MR 1 8 RESET VCC 2 7 RESET 6 N.C. 5 PFO GND 3 MAX707 MAX708 PFI 4 DIP/SO ( ) ARE FOR MAX813L ONLY. Pin Configurations continued at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. 19-4334; Rev. 9; 1/13 MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits ABSOLUTE MAXIMUM RATINGS CERDIP (derate 8.00mW/°C above +70°C) . . . . . . . . . . 640mW Terminal Voltage (with respect to GND) Operating Temperature Ranges VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V MAX70_C__, MAX813LC__ . . . . . . . . . . . . . . . . . . . . 0°C to +70°C All Other Inputs (Note 1) . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V) MAX70_E__, MAX813LE__ . . . . . . . . . . . . . . . . . . . -40°C to +85°C Input Current MAX70_MJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Storage Temperature Range . . . . . . . . . . . . . . . . -65°C to +160°C GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . +300°C Output Current (all outputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Soldering Temperature (reflow) Continuous Power Dissipation (TA = +70°C) Lead(Pb)-free.................................................................+260°C Plastic DIP (derate 9.09mW/°C above +70°C) . . . . . . . 727mW Containing Lead(Pb)......................................................+240°C SO (derate 5.88mW/°C above +70°C) . . . . . . . . . . . . . . . 471mW µMAX (derate 4.10mW/°C above +70°C) . . . . . . . . . . . . 330mW Note 1: The input voltage limits on PFI and MR can be exceeded if the input current is less than 10mA. 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. ELECTRICAL CHARACTERISTICS (VCC = 4.75V to 5.5V for MAX705/MAX707/MAX813L, VCC = 4.5V to 5.5V for MAX706/MAX708, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER Operating Voltage Range Supply Current SYMBOL VCC ISUPPLY Reset Threshold (Note 2) VRT Reset Threshold Hysteresis (Note 2) Reset Pulse Width (Note 2) tRS RESET Output Voltage RESET Output Voltage Watchdog Timeout Period WDI Pulse Width Low WDI Input Threshold High WDI Input Current WDO Output Voltage 2 tWD tWP CONDITIONS MIN MAX70_C MAX813LC MAX70_E/M, MAX813LE/M MAX705C, MAX706C, MAX813LC MAX705E/M, MAX706E/M, MAX813LE/M MAX707C, MAX708C MAX707E/M, MAX708E/M MAX705, MAX707, MAX813L MAX706, MAX708 1.0 1.1 1.2 4.50 4.25 140 VCC - 1.5 TYP 150 150 50 50 4.65 4.40 40 200 ISOURCE = 800µA ISINK = 3.2mA MAX70_C, VCC = 1V, ISINK = 50µA MAX70_E/M, VCC = 1.2V, ISINK = 100µA MAX707, MAX708, ISOURCE = 800µA VCC - 1.5 MAX707, MAX708, ISINK = 1.2mA MAX813LC, ISOURCE = 4µA, VCC = 1.1V 0.8 0.9 MAX813LE/M, ISOURCE = 4µA, VCC = 1.2V ISOURCE = 800µA VCC - 1.5 MAX813L ISINK = 3.2mA MAX705, MAX706, MAX813L 1.00 1.60 VIL = 0.4V, VIH = (VCC) (0.8) 50 MAX705, MAX706, MAX813L, VCC = 5V MAX705, MAX706, MAX813L, WDI = VCC MAX705, MAX706, MAX813L, WDI = 0V MAX705, MAX706, MAX813L, ISOURCE = 800µA MAX705, MAX706, MAX813L, ISINK = 1.2mA MAX 5.5 5.5 5.5 350 500 350 500 4.75 4.50 280 0.4 0.3 0.3 µA V mV ms V V 0.4 2.25 0.8 -150 V 0.4 3.5 50 -50 UNITS 150 s ns V µA VCC - 1.5 V 0.4 Maxim Integrated MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued) (VCC = 4.75V to 5.5V for MAX705/MAX707/MAX813L, VCC = 4.5V to 5.5V for MAX706/MAX708, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL MR Pull-Up Current MR Pulse Width Low MR Input Threshold High MR to Reset Out Delay (Note 2) PFI Input Threshold CONDITIONS MR = 0V tMR TYP MAX UNITS 100 250 600 µA 150 ns 0.8 2.0 tMD 250 VCC = 5V PFI Input Current PFO Output Voltage MIN ISOURCE = 800µA ISINK = 3.2mA V ns 1.20 1.25 1.30 V -25.00 +0.01 +25.00 nA VCC - 1.5 0.4 V Note 2: Applies to both RESET in the MAX705–MAX708 and RESET in the MAX707/MAX708/MAX813L. Maxim Integrated 3 MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits __________________________________________Typical Operating Characteristics MAX705/MAX707 RESET OUTPUT VOLTAGE vs. SUPPLY VOLTAGE POWER-FAIL COMPARATOR DE-ASSERTION RESPONSE TIME MAX705/MAX707 RESET RESPONSE TIME +5V 1V/div VCC +4V PFO +5V VCC GND RESET 330pF 1V/div RESET RESET VCC 2kΩ 1kΩ 30pF +3V +1.25V 1V/div +5V VCC VCC = +5V TA = +25°C PFO TA = +25°C 0V +5V PFI +5V VCC TA = +25°C RESET VCC RESET GND 10kΩ 0V RESET 30pF PFI +1.30V +1.20V 0V 0V 500ms/div 2µs/div 400ns/div POWER-FAIL COMPARATOR ASSERTION RESPONSE TIME MAX707 RESET, RESET ASSERTION MAX707 RESET, RESET DE-ASSERTION PFI PFO 1kΩ +5V +5V 1V/div +5V PFO VCC = VRT TA = +25°C VCC = VRT TA = +25°C +5V RESET 0V +1.25V PFI 50mV/div +1.30V VCC = +5V TA = +25°C RESET RESET GND +5V +1.20V 10kΩ 10kΩ 330pF 0V +5V 330pF VCC 10kΩ RESET RESET GND 10kΩ 330pF RESET 330pF 2V/div 30pF VCC 1V/div 0V RESET RESET 0V 0V 400ns/div 400ns/div 400ns/div MAX707/MAX708/MAX813L RESET OUTPUT VOLTAGE vs. SUPPLY VOLTAGE MAX813L RESET RESPONSE TIME +5V TA = +25°C +5V 1V/div VCC VCC +4V VCC RESET 0V +5V GND 330pF 10kΩ +4V 330pF 10kΩ RESET 0V 0V 500ms/div 4 0V 1V/div VCC RESET GND 2µs/div Maxim Integrated MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits ______________________________________________________________Pin Description PIN MAX705/MAX706 MAX707/MAX708 DIP/SO DIP/SO µMAX µMAX MAX813L DIP/SO NAME FUNCTION µMAX 1 3 1 3 1 3 MR Manual-Reset Input triggers a reset pulse when pulled below 0.8V. This active-low input has an internal 250µA pull-up current. It can be driven from a TTL or CMOS logic line as well as shorted to ground with a switch. 2 4 2 4 2 4 VCC +5V Supply Input 3 5 3 5 3 5 GND 0V Ground Reference for all signals 4 6 4 6 4 6 PFI Power-Fail Voltage Monitor Input. When PFI is less than 1.25V, PFO goes low. Connect PFI to GND or VCC when not used. 5 7 5 7 5 7 PFO Power-Fail Output goes low and sinks current when PFI is less than 1.25V; otherwise PFO stays high. 6 8 — — 6 8 WDI 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 connecting WDI to a high-impedance three-state buffer disables the watchdog feature. The internal watchdog timer clears whenever reset is asserted, WDI is threestated, or WDI sees a rising or falling edge. — — 6 — — — N.C. No Connect 7 8 — 1 2 — Maxim Integrated 7 — 8 1 — 2 — 8 7 — 2 1 RESET Active-Low Reset Output pulses low for 200ms when triggered, and stays low whenever VCC is below the reset threshold (4.65V in the MAX705 and 4.40V in the MAX706). It remains low for 200ms after VCC 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. WDO Watchdog Output pulls low when the internal watchdog 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 VCC is below the reset threshold, WDO stays low; however, unlike RESET, WDO does not have a minimum pulse width. As soon as VCC rises above the reset threshold, WDO goes high with no delay. RESET 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. 5 MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits WDI 6 WATCHDOG TRANSITION DETECTOR VCC 250µA MR VCC 1 WATCHDOG TIMER WDO MR 7 RESET GENERATOR 2 RESET (RESET) RESET VCC 1 RESET GENERATOR 2 PFI 5 7 RESET MAX707 MAX708 4.65V* MAX705 MAX706 MAX813L 4 8 VCC 250µA TIMEBASE FOR RESET AND WATCHDOG 4.65V* PFI 8 4 5 PFO PFO 1.25V 1.25V * 4.40V FOR MAX7O6. ( ) ARE FOR MAX813L ONLY. 3 3 GND GND * 4.40V FOR MAX7O6. Figure 1. MAX705/MAX706/MAX813L Block Diagram Figure 2. MAX707/MAX708 Block Diagram _______________Detailed Description 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 µP. When VCC 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 simultaneously, and thus overrides the NMI interrupt. If WDI is left unconnected, WDO can be used as a lowline output. Since floating WDI disables the internal timer, WDO goes low only when VCC 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 activehigh and active-low reset outputs. The MAX813L has both an active-high reset output and a watchdog timer. Reset Output A microprocessor’s (µP’s) reset input starts the µP in a known state. Whenever the µP is in an unknown state, it should be held in reset. The MAX705-MAX708/MAX813L assert reset during power-up and prevent code execution errors during power-down or brownout conditions. On power-up, once VCC reaches 1V, RESET is a guaranteed logic low of 0.4V or less. As VCC rises, RESET stays low. When VCC rises above the reset threshold, an internal timer releases RESET after about 200ms. RESET pulses low whenever VCC 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 VCC falls below the reset threshold, RESET stays low and is guaranteed to be 0.4V or less until VCC 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 VCC down to 1.1V. Some µPs, such as Intel’s 80C51, require an active-high reset pulse. Watchdog Timer The MAX705/MAX706/MAX813L watchdog circuit monitors the µP’s activity. If the µP does not toggle the watchdog input (WDI) within 1.6sec and WDI is not three-stated, WDO goes low. As long as RESET is asserted or the 6 Manual Reset The manual-reset input (MR) allows reset to be triggered 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. Maxim Integrated MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits Power-Fail Comparator The power-fail comparator can be used for various purposes because its output and noninverting input are not internally connected. The inverting input is internally connected to a 1.25V reference. tWP WDI tWD tWD tWD 0V When VCC falls below 1V, the MAX705-MAX708 RESET output no longer sinks current—it becomes an open circuit. 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 100kΩ, large enough not to load RESET and small enough to pull RESET to ground. +5V 0V +5V RESET 0V RESET EXTERNALLY TRIGGERED BY MR +5V (RESET) tRS Monitoring Voltages Other Than the Unregulated DC Input 0V ( ) ARE FOR MAX813L ONLY. Figure 3. MAX705/MAX706/MAX813L Watchdog Timing VRT VRT VCC tRS tRS +5V RESET +5V MR 0V tMD tMR WDO 0V Monitor voltages other than the unregulated DC by connecting a voltage divider to PFI and adjusting the ratio appropriately. If required, add hysteresis by connecting a resistor (with a value approximately 10 times the sum of the two resistors in the potential divider network) between PFI and PFO. A capacitor between PFI and GND will reduce the power-fail circuit’s sensitivity to high-frequency noise on the line being monitored. RESET can be asserted on other voltages in addition to the +5V VCC 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 0V +5V __________Applications Information Ensuring a Valid RESET Output Down to VCC = 0V +5V WDO To build an early-warning circuit for power failure, connect 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 µP so it can prepare for an orderly power-down. MR EXTERNALLY DRIVEN LOW 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 resistors and transistor as shown, a high PFO triggers reset. As long as PFO remains high, the MAX705MAX708/MAX813L will keep reset asserted (RESET = low, RESET = high). Note that this circuit’s accuracy depends on the PFI threshold tolerance, the VCC line, and the resistors. 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. Maxim Integrated 7 MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits +12V +5V VCC 1MΩ 1% TO µP RESET MAX70_ MAX70_ MR 130kΩ 1% RESET PFI PFO GND R1 Figure 5. RESET Valid to Ground Circuit PARAMETER MIN TYP MAX UNIT +12V Reset Threshold at +25°C 10.67 10.87 11.50 V Figure 6. Monitoring Both +5V and +12V +5V BUFFERED RESET TO OTHER SYSTEM COMPONENTS 100kΩ VCC MR R1 MAX70_ 100kΩ 2N3904 PFO PFI VCC VCC MAX70_ µP 4.7kΩ R2 GND V- GND +5V MR RESET TO µP RESET RESET GND 0V +5V PFO 0V Figure 8. Interfacing to µPs with Bidirectional Reset I/O VTRIP V5 − 1.25 R1 = 1.25 − VTRIP R2 , VTRIP < 0 Figure 7. Monitoring a Negative Voltage 8 0V Interfacing to µPs with Bidirectional Reset Pins µPs 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 µP wants to pull it low, indeterminate logic levels may result. To correct this, connect a 4.7kΩ resistor between the RESET output and the µP reset I/O, as in Figure 8. Buffer the RESET output to other system components. Maxim Integrated MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits __Ordering Information (continued) PART TEMP RANGE MAX705EPA -40°C to +85°C 8 Plastic DIP MAX705ESA -40°C to +85°C 8 SO MAX705EUA -40°C to +85°C 8 µMAX MAX705MJA -55°C to +125°C 8 CERDIP** MAX706CPA 0°C to +70°C 8 Plastic DIP MAX706CSA 0°C to +70°C 8 SO MAX706CUA 0°C to +70°C 8 µMAX MAX706C/D 0°C to +70°C Dice* MAX706EPA -40°C to +85°C 8 Plastic DIP MAX706ESA -40°C to +85°C 8 SO MAX706EUA -40°C to +85°C 8 µMAX MAX706MJA -55°C to +125°C _____Pin Configurations (continued) PIN-PACKAGE TOP VIEW (RESET) RESET 1 WDO 2 MR 3 V CC 4 1 RESET 2 8 CERDIP** MR 3 V CC 4 0°C to +70°C 8 Plastic DIP MAX707CSA 0°C to +70°C 8 SO MAX707CUA 0°C to +70°C 8 µMAX MAX707C/D 0°C to +70°C Dice* MAX707EPA -40°C to +85°C MAX707ESA -40°C to +85°C 8 SO MAX707EUA -40°C to +85°C 8 µMAX MAX707MJA -55°C to +125°C 8 CERDIP** MAX708CPA 0°C to +70°C 8 Plastic DIP MAX708CSA 0°C to +70°C 8 SO WDI 7 PFO 6 PFI 5 GND 8 N.C. 7 PFO 6 PFI 5 GND µMAX RESET MAX707CPA MAX705 MAX706 MAX813L 8 MAX707 MAX708 µMAX ( ) ARE FOR MAX813L ONLY. 8 Plastic DIP MAX708CUA 0°C to +70°C 8 µMAX MAX708C/D 0°C to +70°C Dice* MAX708EPA -40°C to +85°C 8 Plastic DIP MAX708ESA -40°C to +85°C 8 SO MAX708EUA -40°C to +85°C 8 µMAX MAX708MJA -55°C to +125°C 8 CERDIP** MAX813LCPA 0°C to +70°C 8 Plastic DIP MAX813LCSA 0°C to +70°C 8 SO MAX813LCUA 0°C to +70°C 8 µMAX MAX813LC/D 0°C to +70°C Dice* MAX813LEPA -40°C to +85°C 8 Plastic DIP MAX813LESA -40°C to +85°C 8 SO MAX813LEUA -40°C to +85°C 8 µMAX MAX813LMJA -55°C to +125°C 8 CERDIP** ____________________Chip Topography V CC MR WDO/RESET RESET (RESET) WDI/N.C. 0.051" (1.30mm) GND PFI PFO 0.074" (1.88mm) ( ) ARE FOR MAX813L ONLY. TRANSISTOR COUNT: 572 SUBSTRATE MUST BE LEFT UNCONNECTED. * Dice are specified at TA = +25°C. ** Contact factory for availability and processing to MIL-STD-883. Devices in PDIP, SO and µMAX packages are available in both leaded and lead-free packaging. Specify lead free by adding the + symbol at the end of the part number when ordering. Lead free not available for CERDIP package. Maxim Integrated 9 TBD TBD TBD 1.2 TBD 10 6 10 6 TBD TBD ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ 2.5 1.2 ✔ ✔ 10 6 10 6 1.2 VCC-to-VOUT On Resistance Max (Ω) ✔ ✔ ✔ ✔ ✔ ✔ Separate Watchdog Output Backup-Battery Switch Nominal Watchdog Timeout Period (sec), if Available –————– RESET Valid to VCC = 1V Active-High Reset Active-Low Reset Minimum Reset Pulse Width (ms) Nominal Reset Threshold (V) 4.37/4.62 250 ✔ ✔ ✔ 0.15/0.6/1.2 4.65/4.40 140 ✔ ✔ 1.6 2.63/2.93/3.08 140 ✔ ✔ 1.6 4.65/4.40 140/adj. ✔ ✔ ✔ 1.6/adj. ✔ The MAX1691 is a module with the MAX691A and a 125mAh lithium battery Adj. 35/adj. ✔ ✔ 1.6/adj. ✔ Adj. 35/adj. ✔ ✔ 1.6/adj. ✔ 4.65/adj. 200 ✔ ✔ 4.65/4.40 140 ✔ ✔ 2.63/2.93/3.08 140 ✔ ✔ 4.65/4.40 140 ✔ ✔ 1.6 ✔ 2.63 140 ✔ ✔ 1.6 ✔ 2.63/2.93/3.08 140 ✔ ✔ 1.6 ✔ 4.65/4.40 140 ✔ ✔ ✔ 2.63/2.93/3.08 140 ✔ ✔ ✔ 4.65 140 ✔ ✔ ✔ 1 ✔ 4.65/4.40/ 140 ✔ ✔ ✔ 1 ✔ 2.63/2.93/3.08 2.63/2.93/3.07/3.08 140 ✔ ✔ ✔ 1.6 ✔ Adj. 140 ✔ ✔ ✔ 1.6 ✔ 2.63/2.93/3.07/3.08 140 ✔ ✔ 4.60/4.40 140 ✔ ✔ ✔ 1.6/adj. ✔ 4.68/4.58/4.43 140 ✔/±1.5% ✔ 1.6 4.60/4.40/ 140 ✔ ✔ 1.6 2.63/2.93/3.08 2.63/2.93/3.08 140 ✔ ✔ 1.6 4.65/4.40/ 140 ✔ ✔ 1.6 2.63/2.93/3.08 2.63/2.93/3.08 140 ✔ ✔ ✔ 4.68/4.58/4.43 140 ✔/±1.5% ✔/±1.5% ✔ 1.6 ✔ 4.68/4.58/4.43 140 ✔/±1.5% ✔ 4.65/4.40/ 140 ✔ ✔ 2.63/2.93/3.08 4.65/4.40/ 140 ✔ ✔ 2.63/2.93/3.08 4.65 140 ✔ ✔ 1.6 ✔ 4.80/4.70/4.55/3.03 140 ✔/±1% ✔/±1% ✔ 4.80/4.70/4.55/3.03 140 ✔/±1% ✔ 1.6 ✔ Adj./±1% 140 ✔ ✔ ✔ 4.65/4.40/ 140 ✔ ✔ ✔ 1 ✔ 2.63/2.93/3.08 4.37/4.62 667 400 TBD TBD 400 400 TBD TBD TBD 25 TBD 400 25 400 400 ✔ ✔/10ns ✔ ✔ ✔ ✔ ✔ ✔/10ns ✔/10ns ✔/10ns ✔ ✔/10ns VBATT-to-VOUT On Resistance Max (Ω) –—– CE Write Protect 400 400 25 Power-Fail Comparator ✔/±2% ✔/±2% ✔/±2% ✔/±2% ✔/±2% ✔/±2% ✔ ✔/±2% ✔ ✔/±2% ✔ ✔/±2% ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ Manual-Reset Input ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ Low-Line Output Battery-On Output ✔ ✔ ✔ ✔ ✔ 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 product—contact factory for pricing and availability. Specifications are preliminary. 25,000 pc. price, factory direct MXD1210 MAX813L MAX814K/L/N/T MAX815K/L/N/T MAX816 MAX820L/M/R/S/T MAX810L/M/R/S/T MAX806R/S/T MAX807L/N/M MAX808L/N/M MAX809L/M/R/S/T MAX804R/S/T MAX805L/M/R/S/T MAX793R/S/U/T MAX794 MAX795R/S/U/T MAX800L/M MAX801L/N/M MAX802L/M/R/S/T † †† * Part Number MAX1232 MAX690A/692A MAX690R/S/T MAX691A/693A MAX1691 MAX696 MAX697 MAX700 MAX703/704 MAX704R/S/T MAX705/706 MAX706P MAX706R/S/T MAX707/708 MAX708R/S/T MAX791 MAX792L/M/R/S/T ISUPPLY Operating Mode mA max (typ) 0.5(0.23) 0.35(0.2) TBD TBD TBD 0.15(0.07) 0.06(0.024) 0.5(0.4) TBD TBD 0.06(0.024) 0.5(0.4) 0.35(0.2) TBD TBD TBD 0.1(0.035) TBD 0.35(0.2) 0.2(0.1) 0.35(0.2) 0.5(0.4) 0.35(0.2) 0.35(0.2) 0.35(0.2) 0.35(0.2) 0.35(0.2) 0.15(0.06) 0.15(0.07) 0.2(0.05) 0.35(0.2) 0.5(0.4) 0.1(0.035) ISUPPLY Backup Mode µA max (typ) 0.1(0.002) TBD TBD TBD 1(0.4) TBD TBD 1(0.4) 5(0.05) TBD TBD TBD 5(0.04) TBD 5(0.05) 5(0.04) 5(0.05) 1(0.4) 5(0.05) 1(0.4) 5(0.04) 8 8 8 8 8 16 3 8 8 16 3 8 8 16 16 8 16 8 8 8 8 8 16 16 16 16 8 8 8 8 8 8 8 8 16 16 Pins 10 2.44 1.02* †† †† †† 3.82 †† 3.90 †† †† †† 3.66 3.26 †† †† †† 3.88 †† 3.59 1.71 3.26 3.23 3.61 †† 3.55 3.58 2.17 1.38* 2.93 1.02* 1.71 1.71 0.88* 1.63 3.90 3.42 Price† 1000-up ($) ___________________________________________µP Supervisory Circuits MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits Maxim Integrated MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits 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. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 8 µMAX U8-1 21-0036 8 Plastic DIP P8-1 21-0043 8 SO S8-2 21-0041 Maxim Integrated 11 MAX705–MAX708/MAX813L Low-Cost, µP Supervisory Circuits Revision History REVISION NUMBER REVISION DATE 0 2/92 Initial release 8 3/10 Updated the Features, Absolute Maximum Ratings, Typical Operating Characteristics, Figures 3, 7, 8, and the Package Information sections. 9 1/13 Updated package code for 8 SO package DESCRIPTION PAGES CHANGED — 1, 2, 4, 7, 8, 10 11 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 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 guidance. 12 ________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2013 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.