Part # MAX690A-MAX805L datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX690A-MAX805


Part Details:

19-4333; Rev 4; 12/05 Microprocessor Supervisory Circuits MAX690A/MAX692A/MAX802L/MAX802M/MAX805L __________________General Description ___________________________Features The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L Precision Supply-Voltage Monitor: reduce the complexity and number of components 4.65V for MAX690A/MAX802L/MAX805L required for power-supply monitoring and battery-control 4.40V for MAX692A/MAX802M functions in microprocessor (µP) systems. They signifi- Reset Time Delay ­ 200ms cantly improve system reliability and accuracy comparedto separate ICs or discrete components. Watchdog Timer ­ 1.6sec Timeout These parts provide four functions: Battery-Backup Power Switching 1) A reset output during power-up, power-down, and 200µA Quiescent Supply Current brownout conditions. 50nA Quiescent Supply Current in Battery- 2) Battery-backup switching for CMOS RAM, CMOS Backup Mode µP, or other low-power logic. Voltage Monitor for Power-Fail or Low-Battery 3) A reset pulse if the optional watchdog timer has not Warning been toggled within 1.6sec. Power-Fail Accuracy Guaranteed to ±2% 4) A 1.25V threshold detector for power-fail warning or (MAX802L/M) low-battery detection, or to monitor a power supply Guaranteed RESET Assertion to V other than +5V. CC = 1V 8-Pin SO and DIP Packages The parts differ in their reset-voltage threshold levelsand reset outputs. The MAX690A/MAX802L/MAX805Lgenerate a reset pulse when the supply voltage drops ______________Ordering Information below 4.65V, and the MAX692A/MAX802M generate areset below 4.40V. The MAX802L/MAX802M guaran- PART TEMP. RANGE PIN-PACKAGE tee power-fail accuracies to ±2%. The MAX805L is thesame as the MAX690A except that RESET is provided MAX690ACPA 0°C to +70°C 8 Plastic DIP instead of RESET. MAX690ACSA 0°C to +70°C 8 SO All parts are available in 8-pin DIP and SO packages. MAX690AC/D 0°C to +70°C Dice* The MAX690A/MAX802L are pin compatible with the


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MAX690A-MAX805L.pdf Datasheet