LMX339HAUD+T

Overview

The LMX339HAUD+T is a quad, low-voltage analog comparator manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from 1.8V to 5.5V and functions within an automotive temperature range of -40°C to +125°C. The device features internal hysteresis of 2mV for noise immunity and utilizes open-drain outputs. Key electrical specifications include a maximum input offset voltage of 7mV at 5V, a typical supply current of 60µA per comparator at 5V, and a propagation delay of 600ns maximum with 10mV overdrive. It is housed in a 14-pin TSSOP package.

Feature Summary

• Internal 2mV hysteresis provides noise immunity and prevents output oscillations during slow-moving input signals.
• Designed as a drop-in replacement for LMV339 devices with pin-for-pin compatibility.
• Operates across a wide automotive temperature range from -40°C to +125°C.
• Utilizes advanced submicron CMOS technology for low power consumption and small package size.

Applications

• Mobile Communications
• Automotive Applications
• Battery-Powered Electronics

Procurement Notes

Verify the component status before procurement as this specific part number may be discontinued or subject to product change notices. Confirm that the 14-pin TSSOP package aligns with your board layout requirements. Ensure the lead-free/RoHS-compliant designation matches your environmental compliance standards. Cross-reference the datasheet revision history for any updates to electrical characteristics or ordering information prior to finalizing design decisions.

Selection Notes

Select the LMX339HAUD+T when four comparators are required in a compact form factor for low-voltage systems. The internal hysteresis makes it suitable for noisy environments without external components. Consider the 14-pin TSSOP package constraints and verify that the open-drain output configuration fits the system logic levels. This device is appropriate for designs needing direct replacement of older LMV339 implementations while maintaining automotive-grade reliability.

Part Context

This component belongs to the LMX331/LMX393/LMX339 series of general-purpose, low-voltage comparators. The 'H' suffix indicates the inclusion of internal hysteresis, distinguishing it from standard versions. The 'AUD' suffix specifies the 14-pin TSSOP package and the -40°C to +125°C temperature range. The '+T' denotes tape-and-reel packaging. These devices are designed to offer superior performance over traditional BiCMOS or bipolar comparators in terms of speed, offset, and power efficiency.

Replacement Considerations

The LMX339HAUD+T is documented as a pin-for-pin compatible replacement for the LMV339. Designers upgrading from LMV339 should verify that the internal hysteresis does not interfere with existing circuit thresholds. Other family members like LMX339AUD (without hysteresis) share the same package but lack the noise immunity feature.