MAX6467XS22D3

Overview

The MAX6467XS22D3+T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors single power-supply voltages ranging from +1.8V to +5.0V and asserts a reset signal if the supply voltage drops below its preset threshold of 2.2V. The device features an active-low, open-drain output with a fixed reset timeout period of 225ms. It operates within a temperature range of -40°C to +125°C and consumes only 7µA of quiescent current. Packaged in a compact SC-70-4 surface-mount case, it supports manual reset functionality without requiring a watchdog timer or battery backup switch.

Feature Summary

• Edge-triggered, one-shot manual reset function ensures the microprocessor enters reset mode for a fixed timeout period even during continuously asserted manual resets.
• Active-low, open-drain output provides compatibility with various logic families while monitoring single power-supply voltages.
• Low quiescent current consumption of 7µA supports energy-efficient operation in portable and battery-powered applications.

Applications

• Microprocessor (MPU) supervisory reset circuits
• Portable equipment power management
• Battery-operated systems requiring voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and lead times directly with suppliers. Check for obsolescence notices or lifecycle changes. Ensure packaging matches requirements (Reel, Cut Tape). Validate part number suffixes against official documentation to confirm specific threshold voltages and package types.

Selection Notes

Select this component when a fixed threshold voltage near 2.2V is required for MPU supervision. Consider the SC-70-4 package for space-constrained designs. Evaluate the 225ms reset delay against system startup requirements. Verify that the active-low open-drain output aligns with the target microprocessor's reset input specifications. Assess operating temperature range suitability for the intended environment.

Part Context

The MAX6467 series includes multiple variants with different factory-trimmed threshold voltages (e.g., XS18, XS20, XS22, XS23, XS27, XS32, XS46). These devices share common features such as low current consumption, manual reset capability, and SC-70-4 packaging. The 'XS' suffix indicates the specific threshold voltage code. The '+T' suffix typically denotes tape-and-reel packaging. All variants are designed to improve system reliability compared to traditional manual reset circuits.

Replacement Considerations

Direct substitutes include other MAX6467 variants with similar threshold voltages (e.g., MAX6467XS23D3+T for 2.3V threshold). Cross-reference pinouts and electrical characteristics carefully. Verify package compatibility (SC-70-4). Check for any functional differences in reset timing or output configuration between original and replacement parts.