The MAX6357LSUT+T from Maxim Integrated Products is a low cost triple voltage microprocessor (µP) supervisory circuit in 6 pin SOT-23 package. This µP supervisory circuit maintains system integrity by alerting the µP to fault conditions. The microprocessor (µP) supervisor with multiple reset voltages significantly improves system reliability and accuracy compared to separate IC"s or discrete components. If any input supply voltage drops below its associated preset threshold all reset output is asserted. In addition, the outputs are valid as long as either input supply voltage remains greater than +1V. The MAX6357 offer an additional voltage monitor input to monitor a third voltage. The output reset state is guaranteed to remain viable while either VCC1 or VCC2 is above +1V. This device is used in computers, controllers, portable/battery powered equipment, intelligent instruments and multivoltage systems.
Supply voltage range is 1.2V to 5.5V at TA = -40°C to +85°C, 1V to 5.5V at TA = 0°C to +70°C
Operating temperature range from -40°C to 85°C
Precision monitoring of multiple +1.8V, +2.5V, +3V, +3.3V and +5V power supply voltages
Precision factory set power supply reset thresholds
Supply current is 20µA, reset timeout period of 180ms
Active-low debounced manual reset input
Active-low push-pull reset output referenced to VCC2
Minimum power-on-reset pulse width is 100ms, power supply transient immunity
4.63V VCC1 nominal voltage threshold, 2.93V VCC2 nominal voltage threshold
Low cost, no external components for dual voltage systems
Computers; Controllers; Intelligent Instruments; Multivoltage Systems Equipment; Portable Battery-Powered
