MAX802TESA+

Supervisors Overview

The MAX802TESA+ is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand, designed for microprocessor applications. It operates within a supply voltage range of 4.75 V to 5.5 V and features a threshold voltage of 4.4 V with an overvoltage threshold of 4.5 V. The device provides power-fail detection and includes a watchdog timer and battery backup switch capabilities. It utilizes an active low, push-pull output type and offers a reset delay time of 280 ms. The component supports manual reset functionality and is housed in an SOIC-Narrow-8 package, suitable for surface mount installation across an operating temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer for system stability monitoring
• Includes battery backup switch functionality for data retention
• Provides power-fail detection with active low push-pull output
• Supports manual reset input for controlled system recovery

Supervisors Applications

• Microprocessor supervision systems
• Nonvolatile memory protection circuits
• Battery-backed system architectures

Supervisors Procurement Notes

Verify current availability status as distribution channels may indicate limited stock or discontinuation. Confirm RoHS compliance details through official datasheets. Ensure the specific suffix matches required packaging and temperature grades. Cross-reference manufacturer part numbers to avoid counterfeit components during sourcing.

Supervisors Selection Notes

Select this component when a fixed 4.4 V threshold is required for 5 V logic systems. Consider the integrated watchdog and battery backup features if system reliability and data preservation are critical. Verify that the SOIC-8 package fits the PCB layout constraints. Compare quiescent current specifications against other supervisory ICs if power efficiency is a primary design constraint.

Supervisors Part Context

This part belongs to the MAX802 series of microprocessor supervisory circuits from Analog Devices/Maxim Integrated. These devices are engineered to monitor voltage levels and provide reset signals to ensure proper system initialization. The series typically combines voltage monitoring with additional features like watchdog timers and battery switchover, distinguishing it from basic voltage monitors.

Supervisors Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts maintain compatible threshold voltages and package dimensions.