MAX6468US30D3

Overview

The MAX6468US30D3 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 output type for system reliability improvement

Applications

• Microprocessor (µP) supervisory circuits
• Single power-supply voltage monitoring systems
• Embedded systems requiring reliable reset management

Procurement Notes

Verify the exact suffix 'S30' against official Maxim Integrated documentation to confirm the specific threshold voltage value, as datasheets typically list standard variants like S19, S20, or S30 with distinct trim values. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the SOT-143 package footprint matches your PCB design requirements before procurement.

Selection Notes

Select this component when a fixed threshold voltage near 3.0V is required for monitoring a single power rail. Compare the MAX6467 variant if an open-drain output is preferred over the MAX6468's push-pull output. Consider the operating temperature range and package size constraints. Verify that the 225ms reset delay time aligns with the target microprocessor's startup requirements.

Part Context

The MAX6468 belongs to the MAX6467/MAX6468 family of microprocessor supervisory circuits designed to improve system reliability. These devices monitor supply voltages and provide reset signals to connected logic. The MAX6468 specifically offers a push-pull output, distinguishing it from the open-drain MAX6467. Both families share similar manual reset capabilities and low quiescent current characteristics.

Replacement Considerations

MAX6468XS30D3+T: SC-70-4L package variant with identical electrical characteristics. MAX6467US30D3+: Open-drain output alternative in the same SOT-143 package.