MAX9648AUK+T

Comparators Overview

The MAX9648AUK+T is a single-channel general-purpose comparator manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of +1.8V to +5.5V and features an open-drain output capable of sinking up to 35mA. The device includes internal hysteresis of 2mV for noise immunity. Input offset voltage is typically 7mV at 5V operation, with input bias current ranging from 0.0003nA to 400nA depending on temperature. Propagation delay varies between 50ns and 120ns based on overdrive conditions. It functions across an operating temperature range of -40°C to +125°C.

Comparators Feature Summary

• Internal 2mV hysteresis prevents output oscillations caused by noise or slow-moving input signals.
• Input common-mode voltage range extends below ground, allowing direct connection to ground-referenced signals without phase reversal.
• Low supply current consumption optimized for battery-powered applications.
• Drop-in replacement for LMX331/LMX331H comparators.

Comparators Applications

• Mobile communications
• Notebooks and PDAs
• Battery-powered electronics
• General-purpose portable devices

Comparators Procurement Notes

Verify the specific suffix 'AUK+T' corresponds to the SOT-23 package and tape-and-reel delivery format. Confirm RoHS compliance status as indicated by the '+' designation in official documentation. Ensure the source document explicitly supports the ordering information provided. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity.

Comparators Selection Notes

Select this component when low-voltage operation and small footprint are required. The internal hysteresis makes it suitable for noisy environments where external feedback resistors would otherwise be necessary. Consider the open-drain output requirement for pull-up resistor implementation. Evaluate propagation delay specifications against signal speed requirements.

Comparators Part Context

This device belongs to the MAX9647/MAX9648 family of low-voltage comparators. It shares pin compatibility with the MAX9647 but adds internal hysteresis functionality. The series is designed for space-constrained portable applications requiring high reliability and low power consumption.

Comparators Replacement Considerations

The datasheet identifies the MAX9648AUK+T as a drop-in, pin-for-pin compatible replacement for the LMX331 and LMX331H comparators. Verify electrical parameter alignment before substitution.

Comparators FAQ

Does the MAX9648AUK+T have internal hysteresis?

Yes, the MAX9648 variant includes 2mV of internal hysteresis to provide noise immunity and prevent output oscillations.

What is the input common-mode voltage range?

The input common-mode voltage range extends from -0.1V below the negative supply to within +0.7V of the positive supply.