MAX6347XR46+T

Overview

The MAX6347XR46+T is a voltage supervisory circuit from the MAX6346/MAX6347 family, designed for ultra-low-power applications. It features a fixed threshold voltage of 4.63 V and an overvoltage threshold of 4.699 V. The device operates within a supply voltage range up to 5.5 V and consumes only 500 nA of quiescent current. It provides a reset delay time of 185 ms with an accuracy of 1.5%. The output is active low push-pull, housed in a compact SOT-23-3 package, and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low power consumption with 500 nA operating current
• Fixed 4.63 V threshold monitoring for precise voltage supervision
• Active low push-pull output configuration
• Compact 3-pin SOT-23 surface-mount packaging

Applications

• Portable battery-powered electronic devices
• Microprocessor system reset circuits
• Consumer electronics requiring low standby current
• Industrial control systems with strict power constraints

Procurement Notes

Verify the exact suffix (+T) against the manufacturer's official ordering guide to ensure correct tape-and-reel packaging specifications. Confirm that the component meets RoHS compliance requirements as stated in the datasheet. Cross-reference the Mouser or Analog Devices part number to avoid confusion with similar variants like the MAX6346 series. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a fixed 4.63 V threshold is required for system monitoring. The ultra-low 500 nA current makes it suitable for battery-operated devices where standby power is critical. The active low output simplifies interface logic with most microcontrollers. Consider the 1.5% accuracy if tight voltage tolerance is necessary for sensitive analog or digital sections.

Part Context

This part belongs to the Maxim Integrated MAX6346/MAX6347 family of simple reset circuits. These devices are designed to monitor a single voltage rail and generate a reset signal when the voltage drops below or exceeds specific thresholds. The family is known for its small footprint and low power consumption, making it a standard choice for space-constrained embedded designs.

Replacement Considerations

The MAX6346UR46+T is a related variant within the same family, offering similar functionality but potentially different output polarity or package options. Verify pin compatibility and electrical parameters before substitution. Other parts in the MAX634x series may offer adjustable thresholds or additional features like watchdog timers, which are not present in this specific model.