MAX6468US16D3+T

Overview

The MAX6468US16D3+T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors single power-supply voltages ranging from +1.8V to +5.0V and asserts a reset signal if the supply voltage drops below its preset threshold of 1.6V. 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 during continuously asserted manual resets. It 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 indefinite reset states
• Factory-trimmed threshold options eliminate external components
• Active-low push-pull output for direct microprocessor interface

Applications

• Microprocessor system reliability enhancement
• Single power-supply voltage monitoring
• Embedded systems requiring manual reset control

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status (+ suffix indicates lead-free) and check current availability as lifecycle status may vary. Ensure correct package identification (SOT-143) and threshold voltage specification match design requirements before procurement.

Selection Notes

Select this component when monitoring single supply voltages between 1.8V and 5.0V with a specific 1.6V threshold requirement. Consider the edge-triggered manual reset feature for applications requiring controlled reset duration. Verify operating temperature range compatibility (-40°C to +125°C) and package constraints (SOT-143) against board layout specifications.

Part Context

Part of the MAX6467/MAX6468 family of microprocessor supervisory circuits designed to improve system reliability compared to traditional manual reset circuits. These devices offer factory-set thresholds for various supply voltages and tolerances, simplifying design by eliminating external components typically required for voltage monitoring and reset generation.

Replacement Considerations

Consider MAX6468 variants with different threshold voltages (e.g., US29, US41, US46) if supply voltage monitoring requirements differ. Verify package compatibility and electrical characteristics when substituting with other Maxim/Analog Devices supervisor ICs.