MAX6467US46D3

Overview

The MAX6467US46D3 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. The device features an edge-triggered, one-shot manual reset function that ensures the processor enters reset mode for a fixed timeout period only, even during continuously asserted manual resets. It operates within a supply voltage range of +1.8V to +5.0V with a specific threshold of 4.625V. The circuit provides an active-low, open-drain output and supports manual reset input. It is available in a SC-70 (SOT-343) surface-mount package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Edge-triggered, one-shot manual reset function prevents indefinite reset states
• Active-low open-drain reset output compatible with various logic families
• Fixed threshold voltage monitoring for single power-supply supervision

Applications

• Microprocessor system power supply supervision
• Embedded controller reset generation
• Portable electronic device power management

Procurement Notes

Verify the exact suffix D3 corresponds to the SC-70 package and tape-and-reel configuration when sourcing. Confirm the manufacturer designation as Analog Devices or Maxim Integrated on the component marking. Ensure the part number matches the specific 4.625V threshold variant required for the design. Check RoHS compliance status against current manufacturing revisions.

Selection Notes

Select this component for applications requiring a compact supervisory circuit with manual reset capability. The SC-70 package suits space-constrained designs. Verify that the 4.625V threshold aligns with the monitored rail's nominal voltage. Consider the open-drain output requirements for pull-up resistor selection in the target system architecture.

Part Context

The MAX6467 belongs to a family of microprocessor supervisory circuits designed for reliable system reset generation. These devices are engineered to monitor power rails and ensure proper initialization of digital logic. The US46D3 variant specifically targets systems needing a precise 4.625V trip point in a minimal footprint package.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains the same threshold voltage, package type, and manual reset functionality.