MAX6389LT22D3+T

Supervisors Overview

The MAX6389LT22D3+T is a dual-channel microprocessor supervisory circuit from the MAX6389 series, designed for low-voltage and low-power applications. It monitors two independent power-supply inputs within a range of +1.8V to +5.0V while consuming only 7µA of supply current at +1.8V. The device features an active-high, push-pull reset output that asserts when any monitored voltage falls below its factory-set threshold. It includes a fixed reset timeout delay of 280ms to ensure stable system recovery. The component operates reliably across an extended temperature range from -40°C to +125°C and is housed in a compact UDFN-6 package suitable for space-constrained designs.

Supervisors Feature Summary

• Dual-input voltage monitoring capability for comprehensive power supervision
• Active-high push-pull reset output for direct logic interface compatibility
• Ultra-low quiescent current consumption optimized for battery-powered systems
• Extended industrial temperature rating for harsh environment reliability

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Industrial control systems with multiple voltage rails
• Communication equipment needing reliable startup sequencing
• Automotive electronics operating in extreme temperatures

Supervisors Procurement Notes

Verify the specific suffix D3 indicates tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation. Check current availability as distribution may be limited or subject to allocation. Ensure the part number matches the exact threshold voltage requirements for your design.

Supervisors Selection Notes

Select this component when dual-channel supervision is required with active-high outputs. Compare against single-channel alternatives if only one rail needs monitoring. Consider the UDFN-6 footprint constraints during PCB layout. Verify that the 280ms timeout aligns with system startup timing requirements.

Supervisors Part Context

This part belongs to the MAX6381–MAX6390 family of µP reset circuits manufactured by Analog Devices/Maxim Integrated. These devices provide factory-set thresholds ranging from +1.58V to +4.63V. The LT variant typically denotes specific thermal or electrical characteristics within the broader MAX6389 series lineup.

Supervisors Replacement Considerations

Check for MAX6389XS22D3+T for similar functionality with potential pinout differences. Verify MAX6388LT22D3+T if active-high output is required but different package options are needed.