MAX6340UK31+T

Overview

The MAX6340UK31+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 3.1 V. The device provides an active low, open drain output with a reset delay time of 4.375 ms. It consumes a typical operating supply current of 2.5 uA and functions reliably across a temperature range from -40 C to +125 C. The component is housed in a SOT-23-5 surface-mount package.

Feature Summary

• Provides system reset functionality via an active low, open drain output when monitored voltage drops below the specified threshold.
• Designed for microprocessor applications with a dedicated reset time delay to ensure stable power-up sequences.
• Engineered for low-power operation with minimal quiescent current consumption suitable for portable systems.

Applications

• Microprocessor (MPU) reset circuits
• Voltage supervision in battery-powered devices
• Portable electronic equipment requiring low standby current

Procurement Notes

Verify availability status as distribution channels may indicate limited stock or discontinuation. Confirm the specific suffix matches the required threshold voltage and package type. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference datasheet revisions to confirm pinout and electrical characteristics remain consistent with design requirements.

Selection Notes

Select this component when a fixed 3.1 V threshold is required for single-supervision applications. The SOT-23-5 package offers a compact footprint for space-constrained designs. Consider the 4.375 ms delay duration to ensure compatibility with target processor startup times. Verify that the open-drain output interface aligns with the downstream logic requirements.

Part Context

This part belongs to the MAX6340 series of CMOS microprocessor supervisory circuits. These devices are designed to monitor a single power supply and assert a reset signal if the voltage falls outside the programmed threshold. The series is characterized by low supply current and small package options, making them ideal for portable applications.

Replacement Considerations

The MAX6340UK38+T serves as a functional substitute with a higher 3.8 V threshold. Other variants within the MAX6340 family offer different fixed thresholds but maintain identical pinouts and operational characteristics. Verify that the alternative threshold voltage meets the specific monitoring requirements of the target power rail.