MIC6315-42D3UY-TR

Supervisors Overview

The MIC6315-42D3UY-TR is a 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 includes a manual reset input. The device asserts a reset signal if the monitored voltage drops below a designated threshold of 4.20V or if the manual reset pin is forced low. It guarantees a minimum reset timeout of 200ms after the supply rises above the threshold. Operating within a temperature range of -40°C to +85°C, it is housed in a compact SOT-143 package.

Supervisors Feature Summary

• Provides precise voltage monitoring for 3V, 3.3V, or 5V power supplies with a fixed 4.20V threshold
• Features an active low, open-drain reset output compatible with various logic families
• Includes a manual reset input allowing external assertion of the reset state

Supervisors Applications

• Microprocessor system power supply supervision
• Battery-powered equipment voltage monitoring
• Embedded controller reset generation

Supervisors Procurement Notes

Verify the specific suffix D3UY confirms the 4.20V threshold and 200ms timeout against the official datasheet. Confirm the manufacturer source is Microchip Technology, noting historical Micrel branding in legacy documentation. Ensure the SOT-143 package type matches design requirements. Check RoHS compliance status for current production batches.

Supervisors Selection Notes

Select this component when a fixed 4.20V threshold is required for 5V system supervision. The open-drain output allows flexible pull-up voltage selection. Consider the 200ms minimum timeout for system stability. Verify compatibility with the target microprocessor's reset requirements. The SOT-143 package suits space-constrained surface-mount designs.

Supervisors Part Context

This part belongs to the MIC6315 family of inexpensive reset generator circuits. The family offers various threshold voltages and timeout periods to accommodate different power supply standards. The MIC6315 series is widely used in embedded systems requiring reliable power-on reset functionality. It serves as a cost-effective solution for basic voltage supervision tasks.

Supervisors Replacement Considerations

Cross-reference other MIC6315 variants with different thresholds (e.g., MIC6315-31, MIC6315-40) if voltage levels differ. Verify functional equivalence with other open-drain supervisors from Microchip or Micrel. Ensure replacement parts match the SOT-143 package and electrical specifications.