Features and Benefits

  • Internal 400mV Reference
  • Total Threshold Error: ± 1.25% Max at 25°C
  • Wide Supply Range: 1.4V to 18V
  • Input and Output Operate to 36V
  • Specified for –40 to 125°C Temperature Range
  • Low Quiescent Current: 6.5μA Typ at 5V
  • Internal Hysteresis: 6.5mV Typ
  • Low Input Bias Current: ±10nA Max
  • Over-The-Top® Input also Includes Ground
  • Open-Collector Output Allows Level Translation
  • Choice of Input Polarities: LT6703-2/ LT6703-3/ LT6703HV-2/ LT6703HV-3
  • Available in 2mm × 2mm DFN and
    Low Profile (1mm) SOT-23 (ThinSOT) Packages

Product Details

The LT6703-2/LT6703-3/LT6703HV-2/LT6703HV-3 combine a micropower, low voltage comparator with a 400mV reference in a tiny DFN package. Operating with supplies from 1.4V up to 18V, these devices draw only 6.5μA, making them ideal for low voltage system monitoring. Hysteresis is included in the comparator, ensuring stable operation.

The comparator has one input available externally while the other input is connected internally to the reference. The comparator output is open collector and the output load can be referred to any voltage up to 18V (36V for LT6703HV) independent of supply voltage. The output stage has a guaranteed current sink capability of more than 5mA over temperature.

The two versions of this part differ by the polarity of the available comparator input. The LT6703-2/LT6703HV-2 has an inverting input and the LT6703-3/LT6703HV-3 has a noninverting input. Both versions are offered in commercial, industrial and automotive temperature ranges.


  • Battery-Powered System Monitoring
  • Threshold Detectors
  • Window Comparators
  • Relay Driving
  • Optoisolator Driving
  • Industrial Control Systems
  • Handheld Instruments

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations


LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.


Models for the following parts are available in LTspice:


Product Recommendations

LT6703 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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