A1344E Hall Effect Digital Magnetic Switch Sensor IC
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Prices updated: 12 Oct 2026
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About this product
A1344E is a digital Hall-effect magnetic switch IC that changes its output when it senses a magnetic field. It responds to both magnetic poles and has a transistor-style output that interfaces easily with microcontrollers. Typical uses include speed and position sensing, door or lid detection and automotive or industrial switching.
Specifications
- Operating voltage
- 4.5 V to 28 V (typically 5 V)
- Output current
- 25 mA
- Output type
- Digital, output voltage equal to operating voltage
- Operating temperature
- -40°C to 85°C
- Turn-on / turn-off time
- 2 µs each
- Magnetic pole detection
- Both poles
- Protection
- Reverse polarity protection
Frequently asked questions
How do I connect it to a microcontroller?
Connect VCC to 4.5-28 V (typically 5 V), GND to ground and the output to a digital input. Because the output swings to the operating voltage, a 3.3V microcontroller needs a matching supply or a level shifter. Check the datasheet for whether the output needs a pull-up resistor.
Which magnetic poles does it detect?
The listing states it can detect both magnetic poles. The output changes state when the field crosses the operate and release thresholds, so check the datasheet for exact magnetic thresholds before choosing a magnet.
