MAX6347UR46-T

Overview

The MAX6347UR46-T is a microprocessor supervisory circuit from Analog Devices/Maxim Integrated, designed to monitor power supplies in digital systems. It features an active-high push-pull reset output and operates within a supply voltage range up to 5.5V. The device monitors a single input with a fixed threshold of 4.63V and provides a minimum reset pulse width of 185ms. Packaged in a compact SOT-23-3 form factor, it draws a maximum supply current of 1µA. The component functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides active-high push-pull reset signal for system reliability
• Ultra-low supply current consumption suitable for portable equipment
• Factory-trimmed precision voltage monitoring thresholds
• Compact three-pin surface-mount packaging

Applications

• Microprocessor power supply supervision
• Digital system voltage monitoring
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure correct output type and threshold voltage. Confirm package availability and lead times through authorized distributors. Check RoHS compliance status and manufacturing origin details prior to procurement. Ensure compatibility with existing board layout constraints regarding the SOT-23-3 footprint.

Selection Notes

Select this component when an active-high reset signal is required rather than the more common active-low variant. Compare against the MAX6346 series if open-drain or push-pull active-low outputs are acceptable. Consider the ultra-low current specification for battery-operated applications where standby power is critical. Verify that the 4.63V threshold aligns with the target supply rail requirements.

Part Context

This part belongs to the MAX634x family of ultra-low-power reset circuits. It shares architectural similarities with the MAX632x series but offers optimized performance characteristics. The MAX6347 specifically distinguishes itself by providing an active-high output, differentiating it from the active-low variants like the MAX6346 and MAX6348 within the same product line.

Replacement Considerations

MAX6347UR46+T is a verified equivalent part number offering identical electrical specifications and functionality.