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LM393DR

LM393DR Description

The LM393DR from ROHM Semiconductor is a dual general-purpose voltage comparator housed in an 8-SOIC surface-mount package. Designed for precision analog signal comparison, it operates over a wide supply voltage range (2V to 36V single supply or ±1V to 18V dual supply), making it highly versatile for diverse circuit designs. This device features low input bias current (0.25µA @ 5V) and a moderate quiescent current (2.5mA max), ensuring efficient power consumption. With a maximum input offset voltage of 7mV @ 5V, it delivers reliable accuracy in comparison tasks. The LM393DR is RoHS3 compliant and REACH unaffected, meeting modern environmental standards.

LM393DR Features

• Dual Comparator Configuration: Two independent comparators in a single package, reducing board space and cost.
• Wide Operating Voltage Range: Supports 2V–36V (single supply) or ±1V–18V (dual supply), ideal for battery-powered and industrial applications.
• Low Power Consumption: Quiescent current ≤2.5mA and output current up to 6mA @ 5V, balancing performance and efficiency.
• High Precision: Input offset voltage ≤7mV and low input bias current (0.25µA), ensuring accurate signal comparison.
• Robust Packaging: 8-SOIC tape & reel (TR) for automated assembly, with MSL 1 (unlimited) moisture sensitivity for extended shelf life.
• Industrial Temperature Range: Operates from 0°C to 70°C, suitable for consumer and industrial environments.

LM393DR Applications

• Battery Management Systems: Voltage monitoring and threshold detection in portable devices.
• Motor Control Circuits: Overcurrent/undervoltage protection and PWM signal conditioning.
• Sensor Interfaces: Signal conditioning for thermocouples, photodiodes, or pressure sensors.
• Automotive Electronics: Window comparators for fault detection in 12V/24V systems.
• Industrial Automation: Level shifting, zero-crossing detection, and logic-level conversion.

Conclusion of LM393DR

The LM393DR is a cost-effective, high-performance dual comparator offering wide voltage compatibility, low power consumption, and precision signal comparison. While marked as "Not For New Designs", its proven reliability makes it a preferred choice for legacy systems and applications requiring robust analog signal processing. Its small footprint, industrial-grade specs, and compliance with environmental standards ensure longevity in demanding electronics designs. Engineers continue to leverage its versatility in power management, sensing, and control systems where accuracy and efficiency are critical.