Overview
Features and Benefits
- Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages
- Fully Specified Over Temperature
- Available in Three Output Configurations
- Open-Drain Active-Low RESET Output (MAX803)
- Push-Pull Active-Low RESET Output (MAX809)
- Push-Pull RESET Output (MAX810)
- 140ms min Power-On Reset Pulse Width
- 12µA Supply Current
- Guaranteed Reset Valid to VCC= +1V
- Power Supply Transient Immunity
- No External Components
- 3-Pin SC70 and SOT23 Packages
- AEC-Q100 Qualified. Refer to Ordering Information for Specific /V Versions
Product Details
The MAX803/MAX809/MAX810 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V, or +2.5V powered circuits.
These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available.
The MAX803 has an open-drain output stage, while the MAX809/MAX810 have push-pull outputs. The MAX803's open-drain active-low RESET output requires a pullup resistor that can be connected to a voltage higher than VCC. The MAX803/MAX809 have an active-low RESET output, while the MAX810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V.
Low supply current makes the MAX803/MAX809/MAX810 ideal for use in portable equipment. The MAX803 is available in a 3-pin SC70 package, and the MAX809/MAX810 are available in 3-pin SC70 or SOT23 packages.
Applications
- Automotive
- Computers: Desktop, Workstation, Server
- Controllers
- Critical µP and µC Power Monitoring
- Intelligent Instruments
- Portable Battery-Powered Equipment
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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MAX809 Reliability Data1/12/2023
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MAX809Z Reliability Data8/29/2012
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MAX809J Reliability Data5/13/2009
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MAX809R Reliability Data5/13/2009
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MAX809S Reliability Data9/25/2003
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MAX809T Reliability Data4/1/2002
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Digitally Controlled Sine-Wave Generator2/20/2023
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Multiple Voltage Systems Need Supply-Voltage Sequencing6/27/2002
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Supervisory Circuits Keep Your Microprocessor Under Control4/22/2002
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Keep the Product Working—Microprocessor Supervisors Offer Big Insurance in Small Packages11/29/2001
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A Smart Solid-State Fuse Cures Boost-Converter Ills11/6/2000
Tools & Simulations
IBIS Model
Product Recommendations
MAX809 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
PCN-PDN Information
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Sample & Buy
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Lead Times
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