Diodes Incorporated

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to Hall Effect Latches and Switches


Automotive Dual Hall Effect Latch with Speed & Direction Outputs

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AH3965Q/AH3966Q/AH3967Q/AH3968Q is an AEC-Q100 qualified high voltage dual Hall-effect sensor designed for the applications that require accurate speed and direction sensing. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 2.7V to 27V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3965Q/AH3966Q/AH3967Q provides speed and direction outputs, while AH3968Q provides two independent outputs at Q1 and Q2.

For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply.

In the occasion of a supply voltage drop to minimum threshold point, undervoltage lockout protection would be triggered to freeze the device, which prevents the electrical malfunction from affecting the next magnetic measurement circuits, and the output current state updated is always based on the proper accurate measurement result.  


  • Dual Latch Hall Operation with Dual Outputs (AH3968Q) or Speed & Direction Output (AH3965Q/AH3966Q/AH3967Q)
  • Wide Supply Voltage Operation: 2.7V to 27V
  • Chopper Stabilized Design Provides
    • Superior Temperature Stability
    • Minimal Switch Point Drift
    • Enhanced Immunity to Stress
  • Battery Polarity Reverse Connection Protection
  • Transient Spike Voltage Protection
  • UVLO Protection
  • High ESD Rating: HBM = 5kV, CDM = 2kV
  • AEC-Q100 Grade 0 Qualified
  • Temperature Range: -40°C to +150°C
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The AH3965Q/AH3966Q/AH3967Q/AH3968Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/


  • Power closures with anti-pinch features
  • Rotation speed & direction detection
  • Linear speed & direction detection
  • Angular position detection
  • Knob controls

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Automotive
AEC Qualified Yes
Type Latch
Outputs Dual
Output Type Open Drain
Active Output State (B > Bop) Low
Inactive Output State (B < Brp) High-Z
Operating Voltage (V) 2.7 to 27
Average Supply Current (mA) 4.7
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 50
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 75
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 100
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) -100
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) -75
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) -50
Operating Ambient Temperature (°C) -40 to 150

Related Content


Technical Documents

Application Information

Recommended Soldering Techniques