The US3881 is a Hall-effect latch designed in mixed signal CMOS technology that integrates a voltage regulator, Hall sensor with dynamic offset cancellation system, Schmitt trigger and an open-drain output driver, all in a single package.

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Top features

  • Wide operating voltage range from 2.2 V to 18 V

  • Very high magnetic sensitivity – Multi-purpose

  • CMOS technology

  • Chopper-stabilized amplifier stage

  • Low current consumption

  • Open drain output

  • Thin SOT23 3L and flat TO-92 3L both RoHS compliant packages

  • SE package North Pole active

  • UA package South Pole active
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Hall-effect latch sensor - Low voltage and high sensitivity - US3881

Product description

The US3881 is a Hall-effect latch designed in mixed signal CMOS technology.

The device integrates a voltage regulator, Hall sensor with dynamic offset cancellation system, Schmitt trigger and an open-drain output driver, all in a single package.

The low operating voltage and extended choice of temperature range make it suitable for use in automotive, industrial and consumer low voltage applications.

The devices are delivered in a TSOT for surface mount process and in a plastic single in line (TO-92 flat) for through-hole mount. Both 3-lead packages are RoHS compliant.

Features and benefits

  • Wide operating voltage range from 2.2 V to 18 V

  • Very high magnetic sensitivity – Multi-purpose

  • CMOS technology

  • Chopper-stabilized amplifier stage

  • Low current consumption

  • Open drain output

  • Thin SOT23 3L and flat TO-92 3L both RoHS compliant packages

  • SE package North Pole active

  • UA package South Pole active

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