MAX6347UR46+T

Overview

The MAX6347UR46+T is a microprocessor supervisory circuit from the MAX6347 series, manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single voltage input with a fixed threshold of 4.63V and an overvoltage threshold of 4.699V. The device features an active-high, push-pull reset output and operates within a supply voltage range up to 5.5V. It draws a maximum operating current of 1µA and provides a minimum reset delay time of 100ms. Accuracy is specified at 1.5%. The component functions in temperatures from -40°C to +85°C and is housed in a compact SOT-23-3 package.

Feature Summary

• Provides active-high push-pull reset signal for reliable system supervision
• Ultra-low power consumption suitable for portable equipment applications
• Factory-trimmed precision voltage monitoring thresholds
• Compact space-saving surface-mount packaging

Applications

• Microprocessor power supply monitoring in digital systems
• Portable electronic equipment requiring low standby current
• Voltage supervision for 2.5V, 3V, 3.3V, and 5V powered circuits

Procurement Notes

Verify the exact suffix UR46+T against official Analog Devices documentation to confirm the specific 4.63V threshold and active-high output configuration. Ensure compatibility with the required SOT-23-3 footprint and check for any obsolescence notices or limited availability status directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when an active-high reset signal is required rather than the more common active-low variant. The MAX6347 series is appropriate for designs needing ultra-low quiescent current and precise voltage monitoring without manual reset inputs or watchdog timers. Verify that the 4.63V threshold aligns with the specific supply rail being monitored in the target application.

Part Context

The MAX6347 belongs to the broader MAX6326/MAX6346/MAX6347/MAX6348 family of microprocessor supervisory circuits. These devices are designed to eliminate external components by providing integrated voltage monitoring and reset generation. The MAX6347 specifically distinguishes itself within the family by offering an active-high output, whereas other members like the MAX6346 provide active-low outputs.

FAQ

What is the reset output polarity of the MAX6347?

The MAX6347 provides an active-high, push-pull reset output.

Does the MAX6347 include a manual reset input?

No, the MAX6347 does not feature a manual reset input.