MAX6334UR22D3

Overview

The MAX6334UR22D3 is a microprocessor supervisory circuit designed for 1.8V to 3.3V systems. It monitors the VCC supply voltage and asserts an active-low, open-drain RESET signal when the voltage drops below a preset threshold of 2.2V. The device maintains the reset state for a timeout period after VCC rises above the threshold. It operates within a supply range up to 5.5V and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Monitors power supply voltage to ensure system reliability
• Provides active-low open-drain reset output
• Eliminates need for external components and adjustments

Applications

• Microprocessor (µP) supervisory circuits
• Digital system power monitoring
• Ultra-low-voltage applications

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and lead times directly with suppliers. Check for obsolete status or lifecycle changes as availability may be limited. Ensure packaging specifications match design requirements.

Selection Notes

Select this part for applications requiring a simple, low-power supervisor with an open-drain output. Compare against MAX6332 and MAX6333 variants based on required output polarity and drive type. Ensure the 2.2V threshold aligns with the monitored rail's minimum operating voltage.

Part Context

Part of the MAX6332/MAX6333/MAX6334 family of 3-pin, ultra-low-voltage, low-power µP reset circuits. These devices increase circuit reliability by reducing component count. The MAX6334 specifically features an open-drain output, distinguishing it from the push-pull outputs of the MAX6332 and MAX6333.

Replacement Considerations

MAX6334UR22D3+T is a compatible variant. Verify pinout and electrical characteristics before substitution.