MAX6753KA29/V+T

Supervisors Overview

The MAX6753KA29/V+T is a low-power microprocessor supervisory circuit from the MAX6746–MAX6753 series, designed for single-voltage monitoring. It features a factory-set reset threshold of 2.925V with 2% accuracy and supports a maximum supply voltage of 5.5V. The device provides an active-low, open-drain reset output with a fixed timeout delay of 7.59ms. It includes a watchdog timer function and operates within a temperature range of -40°C to +125°C. The component draws only 5µA of supply current and is housed in an SOT-23-8 surface-mount package.

Supervisors Feature Summary

• Capacitor-adjustable reset and watchdog timeout delays allow flexible timing configuration via external components.
• Integrated watchdog timer ensures system reliability by detecting software hangs or processor malfunctions.
• High immunity to power-supply transients prevents false reset assertions during noisy power conditions.
• Low quiescent current consumption extends battery life in portable and energy-efficient applications.

Supervisors Applications

• Critical microprocessor monitoring in embedded controllers
• Portable equipment and battery-powered computers
• Automotive intelligent instruments
• Medical equipment requiring reliable voltage supervision

Supervisors Procurement Notes

Verify the specific suffix '/V' indicates automotive qualification or extended temperature grading as per the manufacturer's datasheet. Confirm RoHS compliance status through official documentation. Check current availability as distribution channels may list limited stock or end-of-life status. Ensure the ordering part number matches the exact threshold voltage and package type required for your design.

Supervisors Selection Notes

Select this component when a single-channel supervisor with a precise 2.925V threshold is required. The open-drain output necessitates an external pull-up resistor. Consider the capacitor-adjustable timeout feature if system-specific reset delays are needed beyond the default values. Verify that the SOT-23-8 package fits the PCB layout constraints and thermal requirements of the application.

Supervisors Part Context

This part belongs to the MAX6753 family of uP reset circuits, which offer configurable reset thresholds and timeouts. The 'KA29' designation specifies the 2.925V threshold voltage, while the '/V' suffix typically denotes automotive-grade reliability and extended temperature operation. These devices are engineered for high reliability in critical systems where voltage supervision is essential for proper microprocessor operation.

Supervisors Replacement Considerations

Check for MAX6753KA29+T as a potential non-automotive equivalent. Verify pinout compatibility with other MAX67xx series supervisors. Ensure substitute parts support the same open-drain output configuration and watchdog functionality. Confirm that alternative components meet the -40°C to +125°C operating temperature range if automotive use is intended.

Supervisors FAQ

How is the reset timeout delay determined?

The reset timeout delay is adjustable via an external capacitor connected to the appropriate pin, allowing customization based on system requirements.

What is the output configuration of the reset signal?

The reset output is active-low and open-drain, requiring an external pull-up resistor to the monitored supply voltage.

Does the device include a manual reset input?

No, the MAX6753KA29 does not feature a manual reset input; it relies solely on voltage monitoring and watchdog functions.