The LMT393D is a low-power, dual voltage comparator from Freescale Semiconductor (now NXP). This device is designed for applications requiring precise voltage comparison with minimal power consumption. It consists of two independent voltage comparators in a single package, making it suitable for a wide range of applications where space and power efficiency are critical.

Applications

• Zero-crossing detectors
• Level detectors
• Oscillator circuits
• Alarm systems
• Power supply monitoring
• Interface for transducers

Features

• Dual independent comparators
• Low supply current: Typically 0.15 mA per comparator
• Wide supply voltage range: 2 V to 30 V (single supply) or ±1 V to ±15 V (dual supply)
• Low input bias current: Typically 25 nA
• Low input offset voltage: Typically 2 mV
• Fast response time
• Open-collector outputs
• Available in SOIC package

Benefits

• Low Power Consumption: Minimizes power drain in battery-powered devices and energy-sensitive applications.
• Space-Saving: The dual comparator configuration reduces board space requirements.
• Versatile: Suitable for a broad range of applications due to its wide supply voltage range and flexible configuration options.
• High Accuracy: Low input offset voltage and bias current ensure precise voltage comparison.
• Easy to Use: The open-collector outputs allow for simple interfacing with various logic families and voltage levels.

The open-collector outputs of the LMT393D require external pull-up resistors, allowing the output voltage level to be adjusted to match the logic levels of other devices in the system. The device is characterized for operation from -40°C to +125°C, making it suitable for industrial and automotive applications. Its robust design and reliable performance make it a popular choice for a variety of voltage comparison tasks.