LMX393, LMX393H

General-Purpose, Low-Voltage, Single/Dual/Quad, TinyPack™ Comparators

General-Purpose, Low-Voltage, TinyPack Comparators

Please check latest availability status for a specific part variant.


The LMX331/LMX393/LMX339 single/dual/quad comparators are drop-in, pin-for-pin-compatible replacements for the LMV331/LMV393/LMV339. The LMX331H/LMX393H/LMX339H offer the performance of the LMX331/LMX393/LMX339 with the added benefit of internal hysteresis to provide noise immunity, preventing output oscillations even with slow-moving input signals.

Advantages of the LMX331/LMX393/LMX339 series include low supply voltage, small package, and low cost. The LMX331 is available in both 5-pin SC70 and SOT23 packages, LMX393 is available in both 8-pin µMAX® and smaller SOT23 packages, and the LMX339 is available in 14-pin TSSOP and SO packages. They are manufactured using advanced submicron CMOS technology. Designed with the most modern techniques, the LMX331/LMX393/LMX339 achieve superior performance over BiCMOS or bipolar versions on the market.

The LMX331/LMX393/LMX339 offer performance advantages such as wider supply voltage range, wider operating temperature range, better CMRR and PSRR, improved response time characteristics, reduced offset, reduced output saturation voltage, reduced input bias current, and improved RF immunity.
LMX331, LMX339, LMX393: Pin Configuration LMX331, LMX339, LMX393: Pin Configuration Enlarge+

Key Features

  • Guaranteed +1.8V to +5.5V Performance
  • -40°C to +125°C Automotive Temperature Range
  • Low Supply Current (60µA/Comparator at VDD = +5.0V)
  • Input Common-Mode Voltage Range Includes Ground
  • No Phase Reversal for Overdriven Inputs
  • Low Output Saturation Voltage (100mV)
  • Internal 2mV Hysteresis (LMX331H/LMX393H/LMX339H)
  • 5-Pin, 2.0mm x 2.1mm x 1.0mm, SC70 Space-Saving Package (LMX331/LMX331H)


  • Automotive Electronics
  • Battery-Powered Applications
  • General Purpose Low-Voltage Applications
  • General-Purpose Portable Devices
  • Mobile Communications
  • Notebooks and PDAs

Technical Documents

App Note 2769 Dual Comparator Thermally Protects Li+ Battery
Product Reliability Reports: LMX393H.pdf  LMX393.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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