LM339 vs LM339N Quad Voltage Comparator: Datasheet & 3D Model
Hello, my friends. This is A Comparative Analysis of LM339 and LM339N Quad Voltage Comparators: Datasheet & Pinout, 3D Model, Price, Advantages, and Disadvantages
Introduction:
Voltage comparators are essential components in electronic circuits used to compare two input voltages and provide a digital output based on the comparison result. The LM339 and LM339N are popular quad voltage comparators widely used in various applications. In this article, we will compare these devices based on their datasheets, pinouts, 3D models, prices, as well as their advantages and disadvantages.
Datasheet & Pinout Overview:
The LM339 and LM339N are quad voltage comparators that consist of four independent comparators in a single package. Key specifications include:
Wide supply voltage range: typically 2V to 36V
Low input bias current: typically 25nA
Low input offset voltage: typically 2mV
Open-collector outputs for direct interface with other digital circuits
Common-mode input voltage range that includes ground
The datasheets provide comprehensive information on the electrical characteristics, functional block diagrams, recommended operating conditions, and application circuits. The pinout configuration typically includes four comparator inputs (IN+ and IN-), power supply pins (VCC+ and GND), and open-collector outputs (OUT).
3D Model:
A 3D model of the LM339 and LM339N can be obtained from various online component libraries. These models aid in visualizing and integrating the devices into PCB designs, ensuring proper placement and clearance within the system.Price:
The prices of the LM339 and LM339N comparators can vary depending on factors such as the manufacturer, package type, and quantity. It is advisable to check with authorized distributors or online marketplaces to obtain accurate pricing information.Advantages:
Versatility: The quad configuration of the LM339 and LM339N allows for multiple voltage comparisons in a single package, reducing component count and board space requirements.
Wide supply voltage range: The comparators can operate with a broad range of supply voltages, providing flexibility in various applications.
Low input bias current and offset voltage: These features ensure accurate and precise voltage comparisons.
Open-collector outputs: The open-collector outputs enable direct interface with other digital circuits, making them suitable for driving various loads.
Disadvantages:
Lack of internal hysteresis: The LM339 and LM339N comparators do not have internal hysteresis, which may require external circuitry to provide noise immunity in certain applications.
Limited output current: The open-collector outputs have limited current-sourcing capabilities, requiring external pull-up resistors for proper operation.
Conclusion:
The LM339 and LM339N quad voltage comparators offer versatile voltage comparison capabilities in electronic circuits. Their wide supply voltage range, low input bias current and offset voltage, and open-collector outputs make them suitable for a range of applications. However, it is important to consider their limitations, such as the lack of internal hysteresis and limited output current. By consulting the datasheets, understanding the pinout configurations, and considering the advantages and disadvantages, engineers can effectively utilize the LM339 and LM339N comparators to design circuits that require precise voltage comparisons.
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