OH921-T Latch IC with Built-in Pull-up Resistor

Small hysteresis high sensitivity, CMOS, internal pull-up resistor

Supply voltage

Operating point (Bop)

Release point (BRP)

Operating temperature

Average supply current

Output current

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Product description

The OH921 is a Hall-effect latch designed in mixed-signal CMOS technology. It is quite suitable for use in automotive, industrial and consumer applications. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage ordinarily caused by device over-molding, temperature dependencies, and thermal stress. The device integrates a voltage regulator, Hall voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and is directly drivable by the output.



  • Wide Operating Voltage Range from 3.5 to 24V
  • Symmetrical Switch Points
  • Chopper-stabilized Amplifier Stage
  • Superior Temperature Stability
  • Compact Size
  • Built-in Pull-up Resistor
  • ESD Rating: 3500V (Human Body Model)


  • Brushless DC Motor Commutation
  • Brushless DC Fan
  • Solid-state Switch
  • Revolution Counting
  • Speed Detection
  • High Sensitivity and Unconnected Switch

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