MAX6468XS22D3+

Overview

The MAX6468XS22D3+ 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 2.2V. 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 consumes 7µA of quiescent current.

Feature Summary

• Edge-triggered, one-shot manual reset function prevents indefinite reset states
• Factory-trimmed threshold voltage eliminates external components
• Active-low push-pull output drives microprocessor reset pins directly

Applications

• Microprocessor system supervision
• Single power-supply monitoring
• Embedded controller reset circuits

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status (+ suffix indicates lead-free). Check datasheet revision history for electrical parameter updates. Ensure SC-70 package compatibility with PCB footprint design. Validate operating temperature range against application environment requirements before procurement.

Selection Notes

Select this component when monitoring a single power rail between 1.8V and 5.0V with a fixed 2.2V threshold requirement. Consider the 225ms reset delay time for platform compatibility. Evaluate the 7µA quiescent current for low-power applications. Verify SC-70-4L package availability against board space constraints. Compare against MAX6467 variants if different timeout periods are needed.

Part Context

Part of the MAX6467/MAX6468 family of microprocessor supervisory circuits designed for system reliability improvement over traditional manual reset designs. The MAX6468 variant specifically includes the edge-triggered manual reset feature. This series offers various factory-set thresholds to accommodate different supply voltages without external resistors.

Replacement Considerations

MAX6468XS22D3+T (tape and reel version)

FAQ

What is the reset delay time for the MAX6468XS22D3+?

The reset delay time is 225 ms.

Does the MAX6468XS22D3+ include a watchdog timer?

No, the MAX6468XS22D3+ does not include a watchdog timer.

What is the maximum supply voltage the MAX6468XS22D3+ can monitor?

The maximum supply voltage is 5.5 V.