MAX6340UK44+T

Overview

The MAX6340UK44+T is a low-power microprocessor supervisor circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors system voltages ranging from 1.6V to 5V and asserts a reset signal when the supply voltage falls below its specific threshold. This device features an active-low, open-drain reset output and utilizes an externally connected capacitor to adjust the reset timeout delay, providing design flexibility. The component operates within a temperature range of -40°C to +125°C and is housed in a 5-pin SOT-23 package.

Feature Summary

• Capacitor-adjustable reset timeout period for flexible timing configuration
• Active-low, open-drain reset output option
• Low quiescent current consumption typical of 1.6µA
• Immune to short voltage transients

Applications

• Microprocessor system supervision
• Battery-powered portable devices
• Consumer electronics voltage monitoring
• Industrial control systems

Procurement Notes

Verify the manufacturer part number against official Analog Devices or Maxim Integrated documentation to ensure authenticity. Confirm that the SOT-23-5 package matches your PCB footprint requirements. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the active-low open-drain output configuration aligns with your system's logic interface needs before procurement.

Selection Notes

Select this component when a low-power supervisor with adjustable timing is required. The open-drain output necessitates an external pull-up resistor; verify this requirement against your design. Consider the 4.375V threshold specifically for this suffix variant. Evaluate the capacitor adjustment capability against fixed-timer alternatives to determine if design flexibility justifies the additional component count.

Part Context

This part belongs to the MAX6340 family of microprocessor supervisors. The UK44 suffix typically denotes specific electrical characteristics such as the reset threshold voltage and output type within the broader product line. These devices are designed to replace older supervisor ICs while offering improved power efficiency and configurable timing through external components.

Replacement Considerations

The MAX6340 series is pin-compatible with LP3470 and NCP300–NCP303 families. Verify electrical parameters such as threshold voltage and quiescent current when substituting these parts. Ensure the replacement maintains the same output configuration and package dimensions.