MAX6347XR46+

Overview

The MAX6347XR46+T is a microprocessor supervisory circuit manufactured by Analog Devices / Maxim Integrated. It monitors power supply voltages and asserts a reset signal when the voltage falls below a factory-set threshold of 4.63V. The device operates within a supply voltage range of 1.2V to 5.5V, consuming only 500nA of quiescent current. It features an active-low push-pull output with a fixed reset delay time of 185ms. The component provides high accuracy of 1.5% for the threshold voltage and is available in a compact SOT-23-3 package suitable for surface-mount applications across industrial temperature ranges.

Feature Summary

• Ultra-low-power consumption with 500nA supply current
• Fixed 4.63V reset threshold with 1.5% accuracy
• Active-low push-pull reset output configuration
• Compact 3-pin SOT-23 surface-mount packaging

Applications

• Portable battery-powered electronic devices
• Microprocessor system power supervision
• Handheld instrumentation monitoring
• Consumer electronics power management

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging if required for automated assembly. Confirm RoHS compliance status through official documentation as indicated by the '+' designation. Ensure the operating environment remains within the specified -40°C to +85°C temperature range. Validate that the 4.63V threshold aligns precisely with the target supply rail requirements before integration into the design.

Selection Notes

Select this component when a fixed 4.63V threshold is required for systems powered between 1.2V and 5.5V. The ultra-low 500nA current draw makes it suitable for battery-operated applications where standby power conservation is critical. The SOT-23-3 package offers space efficiency for dense PCB layouts. Consider the 185ms reset delay to ensure adequate stabilization time for the monitored circuit upon power-up or recovery from undervoltage events.

Part Context

This part belongs to the MAX6346/MAX6347 series of low-power µP reset circuits. These devices are designed to monitor single-supply voltages and provide reliable reset signals for digital logic and microprocessors. The series emphasizes minimal power consumption and small footprint, addressing the needs of portable and space-constrained electronic designs requiring robust power supervision.

Replacement Considerations

The MAX6346UR46+T serves as a direct functional substitute within the same series, offering identical electrical characteristics and threshold specifications.