MAX6468US16D3-T

Overview

The MAX6468US16D3-T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single power-supply voltage and asserts an active-low, push-pull reset signal if the supply drops below its preset threshold. This specific variant features a fixed threshold voltage of 1.575V and a minimum reset timeout period of 150ms. The device operates within a supply voltage range of +1.8V to +5.0V and supports an edge-triggered, one-shot manual reset function. It is housed in a compact SOT-143 package with four pins and is rated for operation over an extended temperature range of -40°C to +125°C.

Feature Summary

• Edge-triggered, one-shot manual reset function ensures the microprocessor enters reset mode for a fixed timeout period only, even during continuously asserted manual resets.
• Factory-trimmed fixed threshold voltages accommodate various supply voltages and tolerances, eliminating the need for external components.
• Active-low, push-pull output provides robust drive capability for reliable system reset signaling.

Applications

• Microprocessor (µP) supervisory circuits requiring precise voltage monitoring
• Portable battery-powered systems needing low-voltage supervision
• Embedded systems utilizing single power-supply architectures

Procurement Notes

Verify the exact suffix 'T' indicates tape-and-reel packaging configuration as per official datasheets. Confirm lead times and availability status directly with authorized distributors, as stock levels fluctuate. Ensure the component matches the specified SOT-143 package and 1.575V threshold for your design requirements. Cross-reference part numbers carefully to avoid confusion with similar variants like MAX6468US16D3+T or non-tape versions.

Selection Notes

Select this component when a fixed 1.575V threshold is required for single-supply monitoring. The 150ms minimum timeout suits platforms needing faster reset assertion compared to longer timeout options. The SOT-143 package offers space efficiency for compact designs. Consider the active-low push-pull output for direct interface with microprocessor reset pins without additional pull-up resistors.

Part Context

The MAX6468 belongs to a family of microprocessor supervisory circuits that include variants with different thresholds and timeout periods. These devices are designed to improve system reliability by providing accurate power-supply monitoring. The US16D3-T designation specifies the 1.575V threshold, SOT-143 package, and tape-and-reel packaging format within the Maxim Integrated portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers for MAX6468US16D3-T are not available in the provided documentation. Users should consult official Analog Devices/Maxim Integrated resources for potential cross-references or newer generation alternatives.