MAX6467US31D7+T

Overview

The MAX6467US31D7+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 an active-low, open-drain reset signal if the supply drops below its preset threshold of 3.075V. The device features an edge-triggered, one-shot manual reset function that ensures the microprocessor enters reset mode for a fixed timeout period, even during continuously asserted manual resets. It operates within a temperature range of -40°C to +125°C, consumes 7µA of quiescent current, and supports a maximum supply voltage of 5.5V with a typical reset delay time of 1.2 seconds.

Feature Summary

• Edge-triggered, one-shot manual reset function prevents indefinite reset states
• Active-low, open-drain output for direct microprocessor interface
• Ultra-low quiescent current consumption for battery-powered applications

Applications

• Microprocessor (µP) supervisory circuits
• Single power-supply voltage monitoring systems
• Battery-operated electronic devices requiring low standby current

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific manufacturing lot details upon order placement. Ensure compatibility with existing PCB footprint designs, specifically the SOT-143-4 package dimensions. Review datasheet specifications for thermal management requirements under maximum operating conditions.

Selection Notes

Select this component when a fixed threshold supervisor with manual reset capability is required. The 3.075V threshold suits 3.3V logic systems. Consider the SOT-143-4 package size for space-constrained designs. Verify that the open-drain output configuration aligns with the target microprocessor's reset input requirements. Evaluate the 7µA quiescent current against system power budget constraints.

Part Context

This part belongs to the MAX6467 series of microprocessor supervisory circuits. The series offers various factory-trimmed threshold options to accommodate different voltage rails. The 'US' suffix indicates the SOT-143-4 package type, while '31' denotes the specific 3.075V threshold voltage. The '+T' suffix typically signifies tape-and-reel packaging for automated assembly processes.

Replacement Considerations

Cross-reference with other MAX6467 variants sharing the same SOT-143-4 package but differing in threshold voltage if system rail changes are planned. Verify pinout compatibility before substituting with other Maxim Integrated supervisor ICs.