MAX6347XR34-T

Overview

The MAX6347XR34-T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors power supply voltages in digital systems and asserts an active-high, push-pull reset signal when the VCC voltage declines below a preset threshold. The device maintains this state for at least 100ms after VCC rises above the threshold. It features ultra-low supply current of 1µA maximum, ensuring suitability for portable equipment. The component operates within a temperature range of -40°C to +85°C and is housed in a space-saving SC-70 package.

Feature Summary

• Provides active-high, push-pull reset output for reliable system monitoring
• Ultra-low supply current consumption ideal for battery-powered applications
• Factory-trimmed reset thresholds ensure precision without external adjustments

Applications

• Microprocessor and digital system power supply monitoring
• Portable electronic equipment requiring low power consumption
• Circuits powered by 2.5V, 3V, 3.3V, or 5V supplies

Procurement Notes

Verify the specific suffix 'XR34' against official manufacturer documentation to confirm the exact reset threshold voltage and package type. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the active-high output configuration matches the target system design requirements before procurement.

Selection Notes

Select this component when an active-high reset signal is required rather than the more common active-low variant. The MAX6347 series offers fixed thresholds for standard voltages, eliminating the need for external resistor networks. Consider the 100ms minimum timeout period to ensure adequate stabilization time for the monitored system during power-up sequences.

Part Context

The MAX6347 belongs to the MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348 family of ultra-low-power supervisory circuits. This family differentiates devices primarily by output polarity and type (push-pull vs. open-drain). The MAX6347 specifically provides an active-high push-pull output, distinguishing it from the MAX6348 which offers an active-low open-drain output.

Replacement Considerations

The MAX6348XR34+T serves as a functional alternative if an active-low open-drain output is acceptable. Verify that the reset threshold voltage remains identical between the two part numbers to ensure correct system operation.