MAX6340UK16

Overview

The MAX6340UK16+T is a low-power microprocessor supervisor circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors system voltages from 1.6V to 5V and asserts a reset signal when the supply voltage falls below its specific threshold. This variant features a fixed reset threshold of 1.6V, an active-low open-drain output, and a fixed reset timeout delay of 4.375 ms. The device operates within a supply voltage range up to 5.5V and consumes a typical quiescent current of 2.5 µA. It is housed in a compact SOT-23-5 surface-mount package and supports operation across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Monitors system voltages from 1.6V to 5V with a fixed 1.6V threshold
• Provides active-low open-drain reset output for direct logic interfacing
• Features capacitor-adjustable reset timeout flexibility in the broader MAX6340 family
• Ensures reliable startup with guaranteed valid reset upon power-up

Applications

• Microprocessor reset supervision in embedded systems
• Battery-powered portable devices requiring low quiescent current
• Industrial control systems operating in extended temperature environments
• Consumer electronics utilizing single-supply voltage monitoring

Procurement Notes

Verify the exact suffix configuration against official datasheets to confirm threshold voltage and package type. Confirm RoHS compliance status and lead-free specifications prior to ordering. Check manufacturer availability as some variants may have restricted supply or limited production runs. Ensure the selected part number matches the required reset timeout characteristics for your specific application design.

Selection Notes

Select this component when a fixed 1.6V threshold is required for low-voltage system monitoring. Consider the MAX6340 series if capacitor-adjustable timeout periods are needed instead of fixed delays. Evaluate the SOT-23-5 package size constraints against available PCB space. Compare quiescent current specifications against other supervisors if ultra-low power consumption is critical for battery life extension.

Part Context

The MAX6340 belongs to a family of low-power microprocessor supervisor circuits designed for voltage monitoring applications. These devices assert a reset signal whenever the supply voltage falls below a predefined threshold. The family includes various threshold options and output configurations to suit different system requirements. The MAX6340UK16 specifically targets applications requiring precise monitoring at the lower end of the standard voltage range.

Replacement Considerations

The MAX6340UK16 is pin-compatible with the LP3470. Verify electrical parameters such as threshold voltage and output drive capability before substituting. Ensure that any replacement part meets the same temperature range and package requirements.