MAX6468US29D3+T

Overview

The MAX6468US29D3+T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors single power-supply voltages ranging from +1.8V to +5.0V and asserts a reset signal when the supply voltage drops below its preset threshold of +2.925V. The device features an edge-triggered, one-shot manual reset function that ensures the microprocessor enters reset mode for a fixed timeout period only, even if the manual reset is continuously asserted. This component operates within a temperature range of -40°C to +125°C and is housed in a SOT-143 package.

Feature Summary

• Edge-triggered, one-shot manual reset function prevents continuous reset assertion during prolonged manual input
• Monitors single power-supply voltages from +1.8V to +5.0V with factory-trimmed thresholds
• Active-low push-pull output driver provides robust reset signaling

Applications

• Microprocessor system supervision
• Power supply monitoring in embedded systems
• Manual reset circuit implementation in industrial controllers

Procurement Notes

Verify the exact part number suffix against official Analog Devices documentation to confirm pinout and electrical characteristics. Ensure compatibility with your system's voltage levels and thermal requirements. Cross-reference datasheet revision dates to validate feature sets. Confirm RoHS compliance status through manufacturer certificates. Validate package dimensions against your PCB footprint specifications before procurement.

Selection Notes

Select this component when a fixed threshold reset at 2.925V is required for single-supply monitoring. Consider the SOT-143 package size constraints and the need for edge-triggered manual reset functionality. Evaluate the operating temperature range suitability for your specific application environment. Compare against other MAX6468 variants if different threshold voltages or packages are needed.

Part Context

The MAX6468 belongs to the MAX6467/MAX6468 family of microprocessor supervisory circuits designed for reliable system reset management. These devices improve system reliability compared to traditional manual reset circuits by limiting reset duration during manual intervention. The family supports various threshold voltages and packages to accommodate diverse design requirements.

Replacement Considerations

Check for MAX6468 variants with different threshold voltages (e.g., MAX6468USxxD3+) if the 2.925V threshold does not match your design. Verify package compatibility if substituting with other SOT-143 supervised reset ICs. Consult Analog Devices documentation for direct pin-to-pin replacements within the same series.