Texas Instruments

LM239AD  

Linear Comparators

LM239AD Description

The LM239AD is a high-performance, general-purpose comparator designed by Texas Instruments. This IC features four differential comparators in a 14-pin SOIC package, making it ideal for a variety of applications requiring precise voltage comparison. The LM239AD is known for its robust performance and reliability, with a maximum quiescent current of 2mA and an input bias current as low as 0.25µA at 5V. It operates over a wide supply voltage range of 2V to 30V for single supply and ±1V to ±15V for dual supply, ensuring flexibility in various electronic designs. The comparator also boasts a maximum input offset voltage of 3mV at 30V, which ensures high accuracy in voltage comparisons. With a maximum output current of 20mA, the LM239AD can drive a variety of loads effectively. The device is REACH unaffected and RoHS3 compliant, making it suitable for environmentally conscious designs. The LM239AD is available in a tube package and has a moisture sensitivity level (MSL) of 1, indicating it is suitable for unlimited storage without requiring special handling.

LM239AD Features

• High Input Impedance: The LM239AD features a low input bias current of 0.25µA at 5V, which minimizes the loading effect on the input signal source, ensuring accurate voltage comparisons even with high-impedance sources.
• Wide Operating Voltage Range: With a supply voltage range of 2V to 30V for single supply and ±1V to ±15V for dual supply, the LM239AD is versatile and can be used in a wide array of electronic systems, from low-power portable devices to high-voltage industrial applications.
• Low Offset Voltage: The maximum input offset voltage of 3mV at 30V ensures high accuracy in voltage comparisons, making the LM239AD suitable for precision applications such as level detection and signal conditioning.
• High Output Current Capability: The LM239AD can deliver up to 20mA of output current, allowing it to drive various loads, including LEDs, relays, and other electronic components, without the need for additional amplification stages.
• Surface Mount Technology: The 14-pin SOIC package is designed for surface mount applications, providing a compact and reliable solution for modern PCB designs. This packaging also facilitates automated assembly processes, reducing manufacturing costs and improving production efficiency.
• Environmental Compliance: The LM239AD is REACH unaffected and RoHS3 compliant, ensuring it meets the stringent environmental regulations required for modern electronic products. This compliance makes the LM239AD suitable for use in environmentally conscious designs and helps manufacturers meet regulatory requirements.

LM239AD Applications

The LM239AD is a versatile comparator suitable for a wide range of applications, including:

• Signal Processing: The LM239AD can be used in signal processing circuits to compare input signals against reference voltages, enabling functions such as level detection, window detection, and signal conditioning.
• Power Management: In power management systems, the LM239AD can monitor voltage levels to ensure they remain within specified limits, providing reliable over-voltage and under-voltage protection.
• Industrial Control: The robust performance and wide operating voltage range of the LM239AD make it ideal for industrial control applications, where precise voltage comparisons are required to control machinery and processes.
• Automotive Electronics: The LM239AD's high reliability and environmental compliance make it suitable for automotive applications, where it can be used for battery monitoring, sensor interfacing, and other critical functions.
• Consumer Electronics: In consumer electronics, the LM239AD can be used in devices such as smartphones, tablets, and home appliances for functions such as battery level indication, power supply monitoring, and signal processing.

Conclusion of LM239AD

The LM239AD is a high-performance, general-purpose comparator that offers a combination of precision, versatility, and reliability. Its low input bias current, wide operating voltage range, and low offset voltage make it suitable for a variety of applications, from precision signal processing to robust industrial control systems. The LM239AD's high output current capability and surface mount packaging provide a compact and efficient solution for modern electronic designs. With its environmental compliance and robust performance, the LM239AD is an excellent choice for designers seeking a reliable and versatile comparator for their electronic systems.

LM239AD Documents

Download datasheets and manufacturer documentation for LM239AD

EOL :

Product Discontinuance Notification (PDF)      

Images :

Mechanical Outline Drawing      

PCN :

Process Change Notification (PDF)       Product Change Notification (PDF)      

Models :

LM239AD Symbol & Footprint by SnapMagic      

SPICE Models :

LM239A PSpice Model