MAX6346XR42-T

Overview

The MAX6346XR42-T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage input with a threshold of 4.2V and features an active-low, push-pull output. The device operates within a supply voltage range up to 5.5V and consumes 500nA of quiescent current. It provides a reset delay time of 185ms and maintains accuracy within 1.5%. The component functions reliably across an extended temperature range from -40°C to +85°C and is housed in a compact SOT-23-3 package.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Internal resistor network eliminates external component adjustments
• Active-low push-pull reset output for direct logic interface

Applications

• Portable electronic devices requiring low standby current
• Battery-powered instrumentation systems
• Microprocessor power supply monitoring circuits

Procurement Notes

Verify the specific suffix against official documentation to confirm the exact threshold voltage and package variant. Ensure compatibility with the target system's voltage levels and thermal requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet before integration into production designs.

Selection Notes

Select this component when a fixed 4.2V threshold is required for single-supervision applications. Consider the 185ms timeout duration relative to system startup requirements. Evaluate the SOT-23-3 footprint constraints against available board space. Compare performance metrics against alternative supervisory ICs if lower quiescent current or different thresholds are needed.

Part Context

This part belongs to the MAX6346 family of ultra-low-power voltage detectors and microprocessor supervisory circuits. The family offers various threshold voltages and timeout delays to accommodate diverse power management needs. These devices are designed to replace discrete supervisor components, reducing bill-of-materials costs and board area while improving reliability through integrated trimming.

Replacement Considerations

The ADM6346 series serves as a functional equivalent within the Analog Devices portfolio. Verify pinout compatibility and electrical parameter alignment, specifically threshold voltage and reset timeout, before substituting.