MAX6467US31D3-T

Overview

The MAX6467US31D3-T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors a single power-supply voltage ranging from +1.8V to +5.0V 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. Key electrical parameters include a maximum supply voltage of 5.5V, a typical reset delay time of 225ms, and a quiescent operating current of 7µA. The overvoltage threshold is specified at 4.1V.

Feature Summary

• Integrates an edge-triggered, one-shot manual reset function to prevent indefinite reset states during continuous manual input.
• Monitors single power-supply voltages within the +1.8V to +5.0V range with factory-trimmed accuracy.
• Provides active low, open-drain reset output for direct interface with microprocessor reset pins.

Applications

• Microprocessor (MPU) supervisory circuits
• Voltage monitoring in portable electronic devices
• Battery-powered system protection

Procurement Notes

Verify the specific suffix D3 against official datasheets to confirm the exact threshold voltage, as variations exist within the MAX6467 family. Confirm availability status directly with authorized distributors, as this component may be subject to limited supply or discontinuation. Ensure the SOT-143-4 package matches your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a single-channel voltage supervisor with manual reset capability is required. Compare the 7µA operating current against other supervisors if ultra-low power consumption is critical. Verify that the 225ms reset delay meets your system's startup timing requirements. Ensure the 5.5V maximum supply voltage rating exceeds your system's peak voltage.

Part Context

The MAX6467 belongs to the Maxim Integrated line of microprocessor supervisory circuits designed to enhance system reliability. It is part of a broader family of voltage detectors that monitor power rails and assert reset signals upon fault conditions. This specific variant utilizes the SOT-143-4 surface-mount package, suitable for space-constrained designs requiring robust power management supervision.

Replacement Considerations

MAX6467US31D7+T: Similar supervisor with comparable specifications but potentially different packaging or threshold tolerances; verify datasheet details.

FAQ

What is the purpose of the edge-triggered manual reset feature?

It ensures the microprocessor enters reset mode for a fixed timeout period only, even if the manual reset button is held down continuously, preventing indefinite reset states.

What is the operating current consumption of the MAX6467US31D3-T?

The typical operating supply current is 7µA, making it suitable for battery-powered applications.