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LM339A-SR

Name: LM339A-SR
Rating: 4.7 (12 reviews)

GENERAL PURPOSE COMPARATOR, OPEN

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規格

Part Status	Active
Type	Differential
Number of Elements	4
Output Type	Open-Collector, CMOS, TTL
Voltage - Supply, Single/Dual (±)	2.5V ~ 36V, ±1.25V ~ 18V
Voltage - Input Offset (Max)	6mV @ 5V
Current - Input Bias (Max)	0.001µA @ 5V
Current - Output (Typ)	10mA
Current - Quiescent (Max)	300µA
Operating Temperature	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Supplier Device Package	14-SOP

概述

Description

The LM339A-SR is a quad comparator integrated circuit primarily used for voltage comparison applications. It features four independent comparators that can operate on a wide voltage range, typically from a single supply of 2V to 36V, or dual supplies of ±1V to ±18V. The LM339A-SR offers fast response times, low power consumption, and high input impedance, making it suitable for various applications, including signal conditioning, level shifting, and threshold detection.
Key features include open-collector outputs, allowing for wired-AND configurations, and the capability to interface with TTL logic levels. The device is housed in a 14-pin DIP or surface-mount package, facilitating easy integration into electronic designs. It is commonly used in automotive systems, industrial controls, and consumer electronics. Overall, the LM339A-SR is a versatile component ideal for tasks that require precise voltage comparisons in both analog and digital circuits.

Features

The LM339A-SR is a quad comparator integrated circuit featuring four independent, high-speed comparators. Key features include:
1. Voltage Range: Operates from a wide supply voltage range of 2V to 36V, allowing flexibility in various applications.
2. Low Input Offset Voltage: Typically around 2mV, ensuring high precision in signal comparison.
3. Low Power Consumption: Consumes low power, making it suitable for battery-operated devices.
4. Open-Collector Outputs: Allows easy interfacing with various voltage levels and provides wired-AND functionality.
5. High Speed: Fast response times with a propagation delay of less than 1μs.
6. Temperature Range: Operates within a temperature range of -40°C to +125°C, suitable for industrial applications.
7. Saturation Recovery: Quick recovery time from saturation, enhancing performance in dynamic conditions.
These features make the LM339A-SR ideal for applications in signal conditioning, threshold detection, and other comparator tasks across various electronic circuits.

Package

The LM339A-SR is typically available in an 8-pin SOIC (Small Outline Integrated Circuit) package. This surface-mount package is designed for compact applications and is suitable for automated assembly processes.

Pinout

The LM339A-SR is a quad comparator, featuring a total of 14 pins. Its pin configuration and functions are as follows:
1. NC (Not Connected) - Pin 1
2. Inverting Input (Comparator 1) - Pin 2
3. Non-inverting Input (Comparator 1) - Pin 3
4. Output (Comparator 1) - Pin 4
5. GND (Ground) - Pin 5
6. Inverting Input (Comparator 2) - Pin 6
7. Non-inverting Input (Comparator 2) - Pin 7
8. Output (Comparator 2) - Pin 8
9. Inverting Input (Comparator 3) - Pin 9
10. Non-inverting Input (Comparator 3) - Pin 10
11. Output (Comparator 3) - Pin 11
12. Inverting Input (Comparator 4) - Pin 12
13. Non-inverting Input (Comparator 4) - Pin 13
14. Output (Comparator 4) - Pin 14
The LM339A-SR operates with a supply voltage range of 2V to 36V and is commonly used in various applications requiring voltage comparisons.

Manufacturer

The LM339A-SR is manufactured by Texas Instruments, a well-known semiconductor company. Texas Instruments (TI) specializes in designing and producing a wide range of electronic components, including analog and digital circuits, microcontrollers, and embedded processors. Founded in 1930, TI has a long history in the electronics industry and is recognized for its innovation in analog technology and various applications across multiple sectors such as automotive, industrial, communications, and consumer electronics. The LM339A is a quad comparator, commonly used in various circuits for signal processing and comparison tasks.

Application

The LM339A-SR is a quad comparator used in various applications, including voltage level detection, analog signal comparison, zero-crossing detection, and window comparators. It is suitable for battery management systems, temperature sensing, automotive electronics, and signal conditioning in industrial applications. Its low power consumption and wide voltage range make it ideal for portable devices and low-power circuits.

Equivalent

Equivalent products to the LM339A-SR chip include the LM393, LMV comparators, and the TLV3701. These alternatives may have similar functionality but may differ in specifications such as voltage range, speed, or package type. Always check the datasheets for specific requirements and compatibility.