
Maxim Integrated
General Description
The MAX811/MAX812 are low-power microprocessor (μP) supervisory circuits used to monitor power supplies in μP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5Vpowered or 3V-powered circuits. The MAX811/MAX812 also provide a debounced manual reset input.
Benefits and Features
● Integrated Voltage Monitor Increases System Robustness with Added Manual Reset
• Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages
• 140ms Min Power-On-Reset Pulse Width
• RESET Output (MAX811), RESET Output (MAX812)
• Guaranteed Over Temperature
• Guaranteed RESET Valid to VCC = 1V (MAX811)
• Power-Supply Transient Immunity
● Saves Board Space
• No External Components
• 4-Pin SOT143 Package
● Low Power Consumption Simplifies Power-Supply Requirements
• 6μA Supply Current
APPLICATIONs
● Computers
● Controllers
● Intelligent Instruments
● Critical μP and μC Power Monitoring
● Portable/Battery-Powered Equipment