MAX6468US22D3+

Overview

The MAX6468US22D3+ 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. 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. This component operates within a temperature range of -40°C to +125°C and utilizes 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 driver

Applications

• Microprocessor system reliability enhancement
• Single power-supply voltage monitoring
• Embedded controller reset generation

Procurement Notes

Verify the specific suffix D3 against official documentation to confirm the exact reset timeout period, as variations exist within the MAX6468 family. Confirm RoHS compliance status for the specific manufacturing lot, as lead-free variants are designated with a plus sign. Ensure the SOT-143 package matches the target PCB footprint requirements before procurement.

Selection Notes

Select this component when a fixed threshold supervisor with manual reset capability is required for systems operating between 1.8V and 5.0V. Consider the specific timeout duration associated with the D3 suffix compared to other available options like D7. Verify that the active-low output polarity aligns with the target microprocessor's reset input requirements.

Part Context

The MAX6468 belongs to a family of microprocessor supervisory circuits designed to improve system reliability over traditional manual reset designs. These devices monitor supply voltages and provide reset signals based on preset thresholds. The family includes various threshold options and timeout periods to accommodate different microprocessor platforms and supply voltage tolerances.

Replacement Considerations

Other MAX6468 variants with different suffixes may offer alternative timeout periods or threshold voltages. Cross-reference the specific electrical characteristics and package dimensions with the target application requirements before substitution.