MAX6468US16D3

Overview

The MAX6468US16D3 is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single power-supply voltage ranging from +1.8V to +5.0V and asserts an active-low reset signal if the supply drops below its preset threshold of 1.575V. The device features an edge-triggered, one-shot manual reset function that ensures the microprocessor enters reset mode for a fixed timeout period only. 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 continuous reset assertion during manual input
• Factory-trimmed threshold voltages accommodate various supply tolerances without external components
• Active-low push-pull output driver for reliable system reset signaling

Applications

• Microprocessor (µP) supervisory circuits requiring single-voltage monitoring
• Systems needing protection against power supply undervoltage conditions
• Applications utilizing edge-triggered manual reset inputs for controlled reboot sequences

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific suffix designations match project requirements. Check current availability as lead times may vary due to supply chain constraints. Ensure thermal management aligns with the specified operating temperature range during integration.

Selection Notes

Select this component when a fixed threshold supervisor with manual reset capability is required. The 1.575V threshold suits lower voltage rails within the 1.8V to 5.0V monitoring range. Consider the SOT-143 package size for space-constrained designs. Verify that the 150ms minimum reset timeout meets system startup timing requirements.

Part Context

Part of the MAX6467/MAX6468 family of microprocessor supervisory circuits designed for enhanced system reliability compared to traditional manual reset circuits. These devices eliminate external components through factory-trimmed thresholds and provide robust reset generation for digital systems.

Replacement Considerations

MAX6468US16D3+T is a tape-and-reel variant of the same electrical specification. Cross-reference with MAX6468 series variants for different threshold voltages or package options such as SC-70.