MAX6467XS33D3+T

Overview

The MAX6467XS33D3+T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single power-supply voltage and asserts a reset signal if the supply drops below its preset threshold of 3.3V. The device operates within a supply voltage range of +1.8V to +5.0V and features an active-low, open-drain output. Key electrical parameters include a maximum supply voltage of 5.5V, a reset delay time of 225ms, and a quiescent supply current of 7µA. It supports manual reset functionality and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Monitors single power-supply voltages and asserts reset when voltage falls below preset threshold
• Includes edge-triggered, one-shot manual reset function for system control
• Provides active-low, open-drain reset output compatible with various logic families

Applications

• Microprocessor (MPU) supervisory circuits
• Power supply monitoring in embedded systems
• Battery-powered devices requiring low quiescent current

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific suffix designations against official datasheets before procurement. Ensure storage conditions meet moisture sensitivity level requirements to maintain device integrity during assembly processes.

Selection Notes

Select this component when a fixed 3.3V threshold is required for MPU supervision. Consider the 7µA quiescent current for battery efficiency. Verify that the SC-70-4 package fits the PCB layout constraints. Ensure the 225ms reset delay aligns with system startup timing requirements without additional external components.

Part Context

This part belongs to the MAX6467 series of microprocessor supervisory circuits. The 'S' suffix indicates a specific threshold voltage variant (3.3V). The 'D3' denotes the SC-70-4 surface-mount package. The '+T' suffix typically signifies tape-and-reel packaging for automated assembly. This series is designed for reliable operation in industrial and consumer applications.

Replacement Considerations

Check for MAX6467 variants with different threshold voltages if 3.3V is not strictly required. Verify pinout compatibility with existing designs. Consider MAX6386 series for similar functionality but different package options or reset delays. Confirm lead-free status if RoHS compliance is mandatory for the target market.