MAX6334UR16D2

Overview

The MAX6334UR16D2 is a microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors power supply voltages in 1.8V to 3.3V systems, asserting an active-low reset signal when VCC drops below a preset threshold. The device features an open-drain output and operates within a temperature range of -40°C to +125°C. It utilizes a 3-pin SOT-23 package and consumes only 3.3µA of supply current. The reset timeout period is typically 40ms, ensuring stable system recovery after power restoration.

Feature Summary

• Ultra-low power consumption with 3.3µA supply current for battery-operated applications
• Active-low open-drain reset output compatible with various logic families
• Precision voltage monitoring with factory-trimmed thresholds between 1.6V and 2.5V
• Compact 3-pin SOT-23 packaging suitable for space-critical designs

Applications

• Microprocessor and digital system power supply monitoring
• Battery-powered portable devices requiring low quiescent current
• Embedded systems needing reliable power-fail detection
• Industrial control circuits operating in extended temperature ranges

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lot traceability upon receipt. Check datasheet revisions for any updates to electrical characteristics or pin configurations. Ensure storage conditions meet moisture sensitivity level requirements before assembly.

Selection Notes

Choose this part when an open-drain output is required for wired-OR configurations or level shifting. Compare against MAX6333 if push-pull output is preferred for faster switching speeds. Verify that the specific threshold voltage matches the monitored rail. Consider package availability and lead times for production planning.

Part Context

Part of the MAX6332/6333/6334 family offering ultra-low-voltage supervision. The MAX6334 variant specifically provides an open-drain output, distinguishing it from the push-pull outputs of the MAX6332 and MAX6333. All variants share similar electrical characteristics and packaging options, differing primarily in output stage design.

Replacement Considerations

MAX6333UR16D2+T offers identical monitoring functions but with a push-pull output instead of open-drain. MAX6332 series provides active-high output options. Verify output compatibility and threshold accuracy when substituting.