MAX6468US46D3-T

Overview

The MAX6468US46D3-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. This specific variant features a factory-trimmed threshold of 4.625V, an active-low push-pull output, and a manual reset function. The device operates within a temperature range of -40°C to +125°C and is housed in a SOT-143 package.

Feature Summary

• Edge-triggered, one-shot manual reset function ensures the microprocessor enters reset mode for a fixed timeout period only, even during continuously asserted manual resets.
• Factory-trimmed threshold options accommodate various supply voltages and tolerances, eliminating the need for external components.
• Active-low, push-pull output provides robust drive capability for system reset lines.

Applications

• Microprocessor (µP) supervisory circuits
• Single power-supply voltage monitoring systems
• Embedded systems requiring reliable reset generation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead times as availability may vary. Ensure the specific suffix matches required threshold and package specifications before ordering.

Selection Notes

Select this part when a fixed 4.625V threshold is required for monitoring higher voltage rails within the 1.8V to 5.0V operating range. Consider the SOT-143 package for space-constrained designs. Verify that the active-low push-pull output aligns with the target microprocessor's reset input requirements.

Part Context

The MAX6468 belongs to the Maxim Integrated family of microprocessor supervisory circuits designed to improve system reliability. It complements the MAX6467 series, offering similar functionality with different output configurations or thresholds. These circuits are integral to ensuring stable operation in digital systems by managing power-up and brown-out conditions.

Replacement Considerations

Check for MAX6468 variants with different threshold voltages or packages if the 4.625V setting is not suitable. Cross-reference with MAX6467 series for open-drain output alternatives. Verify pin compatibility and electrical characteristics before substituting.