MAX6466XR29+T

Overview

The MAX6466XR29+T is an ultra-low-power voltage detector and microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.6V to 6V, with a maximum operating voltage of 6V. The device features a fixed threshold voltage of 1.6V and an overvoltage threshold of 2.944V. It draws a typical operating supply current of 3.5µA. The reset timeout period is 150ms, and the output accuracy is specified at 2.5%. The component utilizes an SC-70-3 package and supports an active low, open drain output configuration.

Feature Summary

• Integrates precision bandgap reference and comparator for accurate voltage monitoring
• Includes internally trimmed resistor networks setting specified trip thresholds
• Features internal 5% threshold hysteresis circuit for noise immunity
• Provides µP supervisory functionality with minimum reset timeout period

Applications

• Battery voltage monitoring in portable electronic devices
• Power-supply supervision in embedded systems
• System voltage monitoring requiring low quiescent current
• Microprocessor reset generation in industrial control applications

Procurement Notes

Verify the specific suffix 'XR29' corresponds to the required SC-70-3 package and 2.944V threshold variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors, as lead times and availability may vary. Ensure the active low open-drain output configuration aligns with the target system's logic interface requirements before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.6V threshold with 150ms reset delay is required for low-power applications. The SC-70-3 package offers space efficiency for compact designs. Consider the 3.5µA supply current for battery-operated systems where power conservation is critical. Verify that the 2.5% accuracy meets the system's voltage tolerance specifications. Ensure the open-drain output can be properly pulled up to the desired logic level.

Part Context

This part belongs to the MAX6461–MAX6466 family of ultra-low-power voltage detectors and µP supervisory circuits. The MAX6464/MAX6465/MAX6466 variants are specifically designed as µP supervisory circuits with a minimum reset timeout period of 150ms, distinguishing them from the faster voltage detectors in the same series. The family monitors battery, power-supply, and system voltages while eliminating external components.

Replacement Considerations

Other members of the MAX6466 family, such as MAX6466UR34+, offer different package options like SOT-23-3. Variants with different suffixes provide various threshold voltages in 100mV increments. Ensure any substitute maintains the 150ms reset timeout and SC-70-3 package if form factor constraints exist.