Texas Instruments

LM393ADRG4

LM393ADRG4 Description

The LM393ADRG4 from Texas Instruments is a dual differential comparator designed for general-purpose applications. Housed in an 8-SOIC package and supplied in Tape & Reel (TR), this surface-mount IC operates over a wide voltage range (2V–36V single supply or ±1V–18V dual supply), making it versatile for various circuit designs. With a low input offset voltage (max 2mV @ 30V) and minimal input bias current (0.25µA @ 5V), it ensures precision in signal comparison. Though marked obsolete, it remains ROHS3 compliant and REACH unaffected, suitable for legacy or low-risk designs.

LM393ADRG4 Features

• Dual Comparator Design: Two independent comparators in a single package, reducing board space and cost.
• Low Power Consumption: Quiescent current as low as 2.5mA (max), ideal for battery-powered systems.
• Wide Supply Range: Supports 2V–36V single or ±1V–18V dual supplies, accommodating diverse power configurations.
• High Output Drive: 20mA output current enables direct interfacing with relays, LEDs, or logic circuits.
• Stable Performance: MSL 1 (Unlimited) moisture sensitivity ensures reliability in storage and assembly.
• Low Offset Voltage: 2mV max ensures accurate comparisons in precision applications.

LM393ADRG4 Applications

• Voltage Monitoring: Detects under/over-voltage conditions in power supplies or battery management systems.
• Zero-Crossing Detectors: Used in AC line monitoring or motor control circuits.
• Window Comparators: Combines two comparators to define voltage thresholds for alarms or triggers.
• Oscillators & Pulse Generators: Forms the core of relaxation oscillators in timing circuits.
• Industrial Control Systems: Reliable operation in 0°C–70°C environments suits automation and sensing applications.

Conclusion of LM393ADRG4

The LM393ADRG4 offers a cost-effective, space-saving solution for precision voltage comparison tasks. Its wide voltage range, low power consumption, and robust performance make it ideal for industrial, automotive, and consumer electronics. While obsolete, its compliance with RoHS3 and REACH ensures it remains viable for legacy designs or applications where newer alternatives are unnecessary. Engineers value its versatility in analog signal processing, particularly in threshold detection and control systems.