More Views

Hall Effect Sensor - US1881


The US1881 is an integrated Hall effect latched sensor. That’s nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass encapsulation and size. A hall effect sensor is much smaller, but can handle less current than a reed switch.

The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open-collector output. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range.


  • 3.5V to 24V DC operation voltage.
  • Low current consumption.
  • Temperature compensation.
  • Wide operating voltage range.
  • Open-Collector pre-driver.
  • 50mA maximum sinking output current.
  • Reverse polarity protection.
  • Lead Free Package: TO-92.



Availability: In stock

In Stock

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.