Reset Window Power-Fail Comparator Power-Fail Threshold Accuracy Backup-Battery Switch Manual Reset Input Watchdog Input Active-High Reset Active-Low Reset MAX690T/S/R, MAX704T/S/R, 3.0V/3.3V Microprocessor MAX802T/S/R, MAX804MAX806T/S/R Supervisory Circuits General Description Features These microprocessor (P) supervisory circuits reduce the RESET and RESET Outputs complexity and number of components required for pow- Manual Reset Input er-supply monitoring and battery-control functions in P Precision Supply-Voltage Monitor systems. They significantly improve system reliability and 200ms Reset Time Delay accuracy compared to separate ICs or discrete components. Watchdog Timer (1.6sec timeout) These devices are designed for use in systems powered Battery-Backup Power SwitchingBattery Can by 3.0V or 3.3V supplies. See the selector guide in the Exceed V in Normal Operation CC back of this data sheet for similar devices designed for 40A V Supply Current CC 5V systems. The suffixes denote different reset threshold 1A Battery Supply Current voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see the Voltage Monitor for Power-Fail or Low-Battery Reset Threshold section in the Detailed Description). All Warning these parts are available in 8-pin DIP and SO packages. Guaranteed RESET Assertion to V = 1V CC Functions offered in this series are as follows: 8-Pin DIP and SO Packages Applications Battery-Powered Computers and Controllers Embedded Controllers Intelligent Instruments Critical P Power Monitoring MAX690 4% 75mV Portable Equipment MAX704 4% 75mV MAX802 2% 2% Ordering Information MAX804 2% 2% PART** TEMP RANGE PIN-PACKAGE MAX805 4% 75mV MAX690 CPA 0C to +70C 8 Plastic DIP MAX806 2% 2% MAX690 CSA 0C to +70C 8 SO MAX690 C/D 0C to +70C Dice* MAX690 EPA -40C to +85C 8 Plastic DIP Typical Operating Circuits MAX690 ESA -40C to +85C 8 SO REGULATED +3.3V OR +3.0V V UNREGULATED CC P MAX690 MJA -55C to +125C 8 CERDIP DC 0.1F V CC RESET RESET (RESET) Ordering Information continued at end of data sheet. R1 NMI PFO MAX690T/S/R *Contact factory for dice specifications. MAX802T/S/R I/O LINE GND PFI WDI **These parts offer a choice of reset threshold voltage. Select MAX804T/S/R 3.6V MAX805T/S/R the letter corresponding to the desired nominal reset threshold R2 BUS LITHIUM BATTERY voltage (T = 3.075V, S = 2.925V, R = 2.625V) and insert it into V VBATT OUT GND V CC the blank to complete the part number. CMOS RAM 0.1F 0.1F Devices in PDIP and SO packages are available in both leaded GND and lead(Pb)-free packaging. Specify lead free by adding the + symbol at the end of the part number when ordering. Lead free ( ) ARE FOR MAX804T/S/R, MAX805T/S/R not available for CERDIP package. Typical Operating Circuits continued at at end of data Pin Configuration appears at end of data sheet. sheet. 19-0243 Rev 3 4/15MAX690T/S/R, MAX704T/S/R, 3.0V/3.3V Microprocessor MAX802T/S/R, MAX804MAX806T/S/R Supervisory Circuits Absolute Maximum Ratings Terminal Voltage (with respect to GND) Continuous Power Dissipation (T = +70C) A V ...................................................................-0.3V to +6.0V Plastic DIP (derate 9.09mW/C above +70C) ............727mW CC VBATT ..............................................................-0.3V to +6.0V SO (derate 5.88mW/C above +70C) ........................471mW All Other Inputs................. -0.3V to the higher of V or VBATT CERDIP (derate 8.00mW/C above +70C) ................640mW CC Continuous Input Current Operating Temperature Ranges V ...............................................................................100mA MAX690 C /MAX704 C /MAX80 C .......0C to +70C CC VBATT ............................................................................18mA MAX690 E /MAX704 E /MAX80 E .. -40C to +85C GND ................................................................................18mA MAX690 M /MAX704 M /MAX80 M ... -55C to +125C Output Current Storage Temperature Range ............................ -65C to +160C RESET, PFO ..................................................................18mA Lead Temperature (soldering, 10s) .................................+300C V .............................................................................100mA OUT 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 (V = 3.17V to 5.5V for the MAX690T/MAX704T/MAX80 T, V = 3.02V to 5.5V for the MAX690S/MAX704S/MAX80 S, V = 2.72V to CC CC CC 5.5V for the MAX690R/MAX704R/MAX80 R VBATT = 3.6V T = T to T unless otherwise noted. Typical values are at T = +25C.) A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX690 C, MAX704 C, MAX80 C 1.0 5.5 Operating Voltage Range, V V , VBATT (Note 1) CC MAX690 E/M, MAX704 E/M, MAX80 E/M 1.1 5.5 MAX690 C/E, MAX704 C/E, 40 50 MAX80 C/E, V < 3.6V CC MAX690 C/E, MAX704 C/E, 50 65 MR = V MAX80 C/E, V < 5.5V CC CC V Supply Current CC I A (MAX704 / SUPPLY (excluding I ) OUT MAX690 M, MAX704 M, MAX806 ) 40 55 MAX80 M, V < 3.6V CC MAX690 M, MAX704 M, 50 70 MAX80 M, V < 5.5V CC MR = V CC V Supply Current in Battery- CC V = 2.0V, VBATT = 2.3V 25 50 A (MAX704 / CC Backup Mode(excluding I ) OUT MAX806 ) MAX690 C/E, MAX704 C/E, MAX80 C/E 0.4 1 VBATT Supply Current, Any A Mode (excluding I ) (Note 2) OUT MAX690 M, MAX704 M, MAX80 M 0.4 10 MAX690 C/E, MAX704 C/E, MAX80 C/E 0.01 0.5 Battery Leakage Current A (Note 3) MAX690 M, MAX704 M, MAX80 M 0.01 5 MAX690 C/E, MAX704 C/E, MAX80 C/E, V V CC CC I = 5mA (Note 4) -0.3 -0.015 OUT MAX690 C/E, MAX704 C/E, MAX80 C/E V V CC CC I = 50mA -0.3 -0.15 OUT MAX690 M, MAX704 M, MAX80 M V V CC CC V Output Voltage V OUT I = 5mA (Note 4) -0.035 -0.015 OUT MAX690 M, MAX704 M, MAX80 M V V CC CC I = 50mA -0.35 -0.15 OUT V V CC CC I = 250A, V > 2.5V (Note 4) OUT CC -0.0015 -0.0006 Maxim Integrated 2 www.maximintegrated.com