MAX6347XR35-T

Overview

The MAX6347XR35-T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors power-supply voltages and asserts an active-high push-pull reset signal when the supply voltage declines below a preset threshold of 3.5V. The device maintains the reset state for a minimum timeout period after the supply rises above the threshold. It operates within a temperature range of -40°C to +85°C and is housed in a space-saving SC-70-3 surface-mount package.

Feature Summary

• Provides precise monitoring of power-supply voltages with factory-trimmed thresholds
• Features an active-high push-pull reset output for direct logic interface
• Ensures circuit reliability by ignoring fast transients on the supply voltage
• Maintains correct reset state down to 1V supply voltage

Applications

• Portable and battery-powered equipment requiring low power consumption
• Computers and intelligent instruments needing power monitoring
• Controllers and critical microprocessor systems ensuring reliable startup

Procurement Notes

Verify the specific suffix 'XR35' confirms the 3.5V threshold and 'T' indicates tape-and-reel packaging. Confirm RoHS compliance status through official documentation. Check current availability as distribution channels may list limited stock or end-of-life statuses. Ensure the active-high output configuration matches the system design requirements compared to alternative variants.

Selection Notes

Select this component when an active-high reset signal is required for the target logic family. The 3.5V threshold suits systems powered by standard 3.3V rails with appropriate margin. Consider the SC-70-3 package for space-constrained designs. Verify that the 1µA maximum supply current meets the standby power budget of the application.

Part Context

This part belongs to the MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348 family of ultra-low-power microprocessor reset circuits. These devices eliminate external components and adjustments for 2.5V, 3V, 3.3V, and 5V powered circuits. The MAX6347 variant specifically provides an active-high output, distinguishing it from the active-low variants in the same series.

Replacement Considerations

Direct substitutes include other members of the MAX634x family with compatible output types and thresholds, such as MAX6347UR35+T if leaded packaging is acceptable. Verify pinout compatibility and electrical specifications before substitution.