MAX6315US49D3

Supervisors Overview

The MAX6315US49D3 is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1V to 5.5V and features a fixed threshold voltage of 4.9V for monitoring power rails. The device provides an active-low, open-drain reset output with a manual reset input capability. It includes a typical reset delay time of 200ms and maintains high accuracy of 1.8%. Designed for surface-mount installation in SOT-143-4 packages, it supports an extended operating temperature range from -40°C to +125°C while consuming only 5µA of quiescent current.

Supervisors Feature Summary

• Provides reliable power system supervision through a dedicated voltage monitoring channel with precise threshold detection capabilities.
• Features an active-low open-drain reset output that ensures compatibility with various digital logic families without requiring external pull-up components.
• Incorporates a manual reset input pin allowing for direct user intervention or system-initiated reset sequences independent of voltage conditions.

Supervisors Applications

• Embedded systems requiring stable power sequencing and brown-out protection
• Microcontroller-based designs needing reliable power-on reset generation
• Industrial control units operating in extreme temperature environments

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as counterfeits exist. Confirm RoHS compliance status via official documentation before integration. Check current lifecycle status as some variants may be obsolete or restricted. Ensure package marking matches datasheet specifications to avoid substitution errors during assembly.

Supervisors Selection Notes

Select this component when a fixed 4.9V threshold is required for single-supply monitoring. Consider the SOT-143-4 package for space-constrained PCB layouts. Evaluate the 5µA quiescent current against battery life requirements. Verify that the open-drain output configuration aligns with the target microcontroller's input requirements.

Supervisors Part Context

Part of the MAX6315 series offering uPower reset circuits. Shares common family features like manual reset and open-drain outputs. Differs from other series members primarily by its specific 4.9V threshold setting and SOT-143-4 packaging option designed for compact surface-mount applications.

Supervisors Replacement Considerations

MAX6315US49D3+T serves as the lead-free equivalent variant. Cross-reference with MAX6315USxxD3+T where xx denotes different threshold voltages if voltage levels require adjustment. Verify pinout compatibility before substituting with similar supervisory ICs from other manufacturers.