ATS276 Complementary Output Hall Effect Latch TO-92UA

ATS276 Complementary Output Hall Effect Latch is a reliable magnetic sensor designed for precise position and speed detection in electromechanical systems. Based on the Hall effect principle, it functions as a latch—its output state changes only when exposed to a magnetic field of the opposite polarity across a defined threshold.

One of the standout features of the ATS276 is its complementary output (Q and Not-Q) design, which delivers two inverse signals. This ensures redundancy, improved noise immunity, and makes it particularly suitable for directional sensing and quadrature encoding. Thanks to its robust TO-92UA package, wide voltage/temperature operating range, and simple digital output, the ATS276 is widely used in motor control, motion detection, and other automation applications.

Key Features:

• Complementary Digital Outputs: Provides Q and Not-Q signals for noise immunity and quadrature decoding (direction detection).
• Hall Effect Latch: Maintains output state until exposed to the opposite magnetic polarity, ensuring stable operation.
• Wide Voltage Range: Operates from 4.5V to 24V DC, suitable for multiple system designs.
• High Sensitivity: Detects small magnetic field changes, enabling reliable sensing in demanding environments.
• Reverse Polarity Protection: Safeguards the device against accidental power supply misconnection.
• Solid-State Reliability: Long operational life, no mechanical wear compared to traditional switches.

Technical Specifications:

• Type: Hall Effect Latch
• Operating Voltage (V_CC): 4.5 V – 24 V DC
• Output: Open-Collector (Complementary Q and Not-Q)
• Max Output Current (I_OUT): 20 mA
• Temperature Range (T_A): -40°C to +125°C
• Magnetic Flux Density: Latch Point (B_OP) and Release Point (B_RP) – see datasheet.

Mechanical Specifications:

• Package: TO-92UA (Flat 3-pin package)
• Mounting: Through-hole
• Leads: Lead-free, solderable
• Material: Epoxy-molded plastic with flat sensing face

Dimensions:

• Height: 4.0 mm (body only)
• Width: 3.0 mm
• Thickness: 1.5 mm

Pinout & Wiring:

• Pin 1 (VCC): Power supply (4.5V–24V)
• Pin 2 (GND): Ground
• Pin 3 (Not-Q): Complementary output (active low)
• Pin 4 (Q): Primary output (active high)
• Note: External pull-up resistors (≈10 kΩ) are required for both Q and Not-Q outputs.

Datasheet Reference:

• Download ATS276 Datasheet

Applications:

• BLDC Motor Commutation: Rotor position sensing for efficient motor control.
• Flow Meters: Magnetic turbine/gear sensing for fluid measurement.
• Computer Fans: Speed and rotation feedback for fan control systems.
• Speed & Direction Sensing: Quadrature detection for motor encoders and tachometers.
• Position Detection: Non-contact limit switches, CNC/3D printer home sensors.

Equivalent Models:

• A3144 / OH3144: Single-output Hall effect switch (not complementary).
• SS461A: Honeywell single-output Hall effect latch.
• US5881: Wide voltage single-output Hall effect latch.

Package Includes:

• 1 × ATS276 Complementary Output Hall Effect Latch (TO-92UA)