MAX6421XS29-T

Supervisors Overview

The MAX6421XS29-T is a low-power microprocessor supervisor circuit manufactured by Analog Devices Inc. (formerly Maxim Integrated). It monitors system voltages ranging from 1.6V to 5V and asserts a reset signal when the supply voltage falls below its specific threshold of 2.93V. The device features an active-low, push-pull reset output with a fixed timeout delay of 4.375ms. It operates within a temperature range of -40°C to +125°C and consumes a typical quiescent current of 1.6µA. The component is housed in a compact 4-pin SC-70 package.

Supervisors Feature Summary

• Monitors system voltages from 1.6V to 5V
• Capacitor-adjustable reset timeout period for flexibility
• Low quiescent current consumption
• Active-low, push-pull reset output

Supervisors Applications

• Portable battery-powered equipment
• Wireless communications systems
• Handheld instruments
• PDA applications

Supervisors Procurement Notes

Verify the exact suffix configuration against official documentation, as variations exist within the MAX6421 family. Confirm that the XS29 designation corresponds to the required 2.93V threshold for your specific design. Check current availability status, as this component may be subject to limited supply or end-of-life restrictions depending on the manufacturing date code.

Supervisors Selection Notes

Select this component when a fixed threshold near 2.93V is required without external resistor dividers. The SC-70 package is suitable for space-constrained designs. Ensure the application does not require manual reset functionality or watchdog timer capabilities, as these are not included in this specific variant.

Supervisors Part Context

This part belongs to the MAX6340/MAX6421–MAX6426 series of low-power microprocessor supervisors. These devices are designed to monitor system voltages and provide reset signals to ensure reliable operation of digital circuits. The series offers various output options and packages to accommodate different design requirements.

Supervisors Replacement Considerations

Consult official substitution guides for compatible parts within the MAX6421 family or equivalent supervisory circuits from other manufacturers. Verify pin compatibility and electrical specifications before replacing.