MAX6332UR20D3+

Overview

The MAX6332UR20D3+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single power supply input with a fixed threshold voltage of 2.0 V. The device features an active-high, push-pull RESET output and operates within a supply voltage range up to 5.5 V. It provides a reset timeout period of 140 ms. The component functions without manual reset or watchdog timer capabilities. It is housed in a SOT-23-3 surface-mount package and supports operation across a temperature range of -40°C to +125°C.

Feature Summary

• Monitors system power supply voltage against a preset threshold to ensure reliable operation
• Asserts active-high reset signal when supply voltage drops below the specified limit
• Maintains reset assertion for a defined timeout period after supply voltage recovery

Applications

• Microprocessor (µP) power supply monitoring in digital systems
• Voltage supervision for low-voltage logic circuits
• Battery-powered devices requiring reliable power-up sequencing

Procurement Notes

Verify the exact suffix 'D3' corresponds to the specific 140 ms timeout variant in the official datasheet. Confirm RoHS compliance status through manufacturer documentation. Check current availability as distribution channels may list this part as obsolete or limited stock. Ensure the ordering code matches the required active-high output configuration.

Selection Notes

Select this component when an active-high reset output is required for compatibility with specific logic families. The fixed 2.0 V threshold suits applications monitoring 1.8 V or 2.5 V rails. Consider the SOT-23-3 package size for space-constrained designs. Verify that the 140 ms timeout meets the system's power-up stability requirements.

Part Context

This part belongs to the MAX6332/MAX6333/MAX6334 family of ultra-low-voltage, low-power µP reset circuits. The MAX6332 variant is distinguished by its active-high output, whereas the MAX6333 offers active-low push-pull and the MAX6334 provides active-low open-drain outputs. All share similar monitoring capabilities and low power consumption characteristics.

Replacement Considerations

Direct functional substitutes include MAX6333UR20D3+T (active-low push-pull) and MAX6334UR20D3+T (active-low open-drain), provided the system logic accepts active-low inputs. Other MAX633x series parts with matching thresholds and packages may serve as alternatives if output polarity is adaptable.