MIC6315-31D2UY-TR

Supervisors Overview

The MIC6315-31D2UY-TR is a voltage supervisory circuit manufactured by Microchip Technology, designed to monitor power supplies in microprocessor-based systems. It features an active low, open-drain reset output and supports manual reset functionality. The device monitors a single input channel with a precise threshold voltage of 3.08V. It guarantees a minimum reset timeout of 20ms after the supply voltage rises above the threshold. The component operates within a supply voltage range up to 5.5V and functions reliably across an ambient temperature range of -40°C to +85°C. It is housed in a compact SOT-143 surface-mount package.

Supervisors Feature Summary

• Provides active low open-drain reset output for reliable interfacing with digital logic
• Includes manual reset capability allowing external assertion of the reset signal
• Ensures minimum reset pulse width to prevent premature system release during power-up

Supervisors Applications

• Microprocessor-based system power supply monitoring
• Voltage supervision for 3V and 3.3V powered circuits
• Brown-out detection in embedded electronic devices

Supervisors Procurement Notes

Verify the specific suffix D2UY confirms the 3.08V threshold and 20ms timeout variant. Confirm RoHS3 compliance status as required by project specifications. Ensure the SOT-143 package footprint matches the PCB layout design. Check manufacturer datasheets for any recent production change notices affecting pinout or electrical characteristics before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 3.08V threshold is required for 3.3V system supervision. Choose based on the need for manual reset control alongside automatic power-on reset. Consider the SOT-143 package size constraints and open-drain output requirements. Verify that the 20ms minimum timeout meets the system's stability requirements during power transitions.

Supervisors Part Context

This part belongs to the MIC6315 series of inexpensive reset generator circuits originally developed by Micrel and now produced by Microchip Technology. The series offers various threshold voltages to accommodate different standard power rails. The MIC6315-31D2UY-TR specifically targets applications requiring precise monitoring of 3.3V logic levels with a guaranteed minimum reset duration.

Supervisors Replacement Considerations

Other MIC6315 variants with different suffixes offer alternative threshold voltages (e.g., 4.10V, 4.63V) or longer reset timeouts (140ms, 1100ms). Substitution requires matching the threshold voltage and timeout duration to ensure correct system operation.