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Micropower low-voltage rail-to-rail comparator
  • active Active

The TS331, TS332 and TS334 are single, dual and quad micropower and low-voltage comparators. They can operate with a supply voltage ranging from 1.6 V to 5 V with a typical current consumption as low as 20 μA. In addition, rail-to-rail inputs make them a perfect choice for low-voltage applications.

Their availability in tiny packages is a real advantage for overcoming space constraints.

The TS33x are specified for temperatures between -40 °C to +125 °C, making them ideal for a wide range of applications.

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Errata Sheet
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Key Features

  • Supply operation from 1.6 V to 5 V
  • Low current consumption: 20 μA
  • Rail-to-rail inputs
  • Wide temperature range: -40 °C to +125 °C
  • Low output saturation voltage
  • Low propagation delay: 210 ns
  • Open-drain output
  • ESD tolerance: 2 kV HBM/200 V MM
  • SMD packages
  • Automotive qualified

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS6763: Micropower low-voltage, rail-to-rail comparators
4.0 1,669 KB

Application Notes

Description Version Size
AN4071: Introduction to comparators, their parameters and basic applications
1.0 482 KB
AN4368: Signal conditioning for pyroelectric passive infrared (PIR) sensors
1.0 1,003 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
TS331-TS332-TS334 Pspice model
3 KB

Publications and Collaterals


Description Version Size
Micropower op amp and comparator solutions
2.0 1,565 KB


Description Version Size
Products and Solutions for Factory Automation and Control
1.0 3,105 KB
Semiconductor solutions for healthcare applications
1.0 665 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
TS331ICTActiveSC70-5Tape And Reel070_Free Samples.28Distributor reported inventory date: 2015-05-18
Distributor NameRegionStockMin. order
TS331ILTActiveSOT23-5LTape And Reel-40125_Free Samples.29Distributor reported inventory date: 2015-05-22
Distributor NameRegionStockMin. order
ANGLIA LiveOrder NowEUROPE30003000
ARROWOrder NowEUROPE480000
TS331IQTActiveMLPD/DFN 1.2x1.3x0.5 6L P0.4Tape And Reel-40125_-.29No availability reported, please contact our Sales officeEcopack2PDF
TS331IYLTActiveSOT23-5LTape And Reel-40125Yes-.354No availability reported, please contact our Sales officeEcopack2-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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