MAX6318LHUK29BX-T

Supervisors Overview

The MAX6318LHUK29BX-T is a microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors power supplies in digital systems and features a manual reset input. The device operates within a supply voltage range of up to 5.5V and provides a fixed reset threshold voltage of 2.93V. It utilizes an SOT-23-5 surface-mount package and supports active high or active low push-pull outputs. The circuit ensures system reliability with a typical reset delay time of 140ms and maintains accuracy within 1.5%. It functions across an extended industrial temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Integrates a manual reset input for user-initiated system control alongside automatic power supervision.
• Provides flexible output configurations including active high, active low, and push-pull drive capabilities.
• Features factory-trimmed reset threshold voltages to ensure precise monitoring without external components.

Supervisors Applications

• Microprocessor power supply monitoring in embedded systems
• Digital system reset generation for controller stability
• Battery-powered devices requiring low quiescent current supervision

Supervisors Procurement Notes

Verify the exact suffix 'BX' against official Maxim Integrated documentation to confirm the specific threshold voltage and output configuration, as these parameters vary significantly across the MAX6318 family. Confirm RoHS compliance status and lead-free manufacturing details directly with the manufacturer or authorized distributors, as production status may have changed. Ensure the SOT-23-5 footprint matches your PCB design constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 2.93V threshold is required for single-supervision applications. The inclusion of a manual reset pin distinguishes it from basic power-on reset circuits, allowing for hardware-triggered resets. Consider the 1.5% accuracy and 140ms timeout if timing precision is critical for the target microprocessor. Verify that the push-pull output capability meets the drive requirements of the downstream logic.

Supervisors Part Context

This part belongs to the MAX6316–MAX6322 family of 5-pin μP supervisory circuits. These devices are designed to monitor power supplies and processor activity in digital systems. The family offers various combinations of reset outputs and includes watchdog and manual reset features. The MAX6318 specifically focuses on providing reliable reset generation with manual intervention capabilities in a compact surface-mount package.

Supervisors Replacement Considerations

Check for MAX6318 variants with different suffixes (e.g., LHUK, MHUK) that match the required threshold voltage and output polarity. Cross-reference with the MAX6319 series if additional features like watchdog timers are needed, though pinouts and functionalities may differ. Always verify electrical specifications against the latest datasheet before substitution.