LM393 Dual Comparator IC

LM393 Dual Comparator IC – Low Power Voltage Comparator

The LM393 is a dual precision voltage comparator IC tailored for reliable performance in automotive, industrial, and consumer electronic systems. It operates over a wide voltage range from 2V to 36V, making it suitable for both low-voltage and higher-voltage circuits. With low power consumption of approximately 200 µA per comparator and low input offset voltage, it ensures efficient and accurate voltage comparison. The open-collector output allows compatibility with TTL, CMOS, and microcontroller-based systems, while its SOIC-8 package (4.9 x 3.91 mm) enables easy integration into compact circuit boards.

This IC is widely used in applications such as overvoltage/undervoltage protection, zero-crossing detectors, window comparators, and time-delay generators. It maintains stability across temperatures from 0°C to 70°C and supports high-speed switching for real-time monitoring and signal processing.

The LM393 is ideal for engineers designing analog circuits where precision and energy efficiency are essential. Its dual independent comparator channels reduce component count in complex circuits, and its open-drain output design supports wired-AND configurations for flexible logic control.

Key Specs Operating Voltage: 2V to 36V Input Offset Voltage: ~2mV typical Output Type: Open Collector Package: SOIC-8 (4.9 x 3.91 mm) Current Consumption: ~200 µA per comparator Temperature Range: 0°C to 70°C Channels: Dual Independent Comparators Minimum Order Quantity (MOQ): 30 pieces Applications: Voltage detection, ADC reference, PWM, signal conditioning, window comparators, automotive electronics Compliance: RoHS & Pb-Free