LM239AD

Name: LM239AD
Brand: Texas Instruments
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

Analog Comparators Quad Differential Comparator

5,600 Effective Inventory

LM239AD

Effective Inventory5,600

Analog Comparators Quad Differential Comparator

Manufacturer Part # : LM239AD
Package/Case: SOIC-14
Brand: Texas Instruments
Product Categories : Comparators
Series : LM239

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LM239AD DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$1.912	$1.91
10	$1.660	$16.60
30	$1.503	$45.09
100	$1.341	$134.10
500	$1.267	$633.50
1000	$1.235	$1,235.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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LM239AD Details

The LM239AD is a quad voltage comparator from Texas Instruments, designed for wide-range applications such as monitoring thresholds and voltage level detection in industrial and automotive systems.

Key Features

Low Input Offset Voltage: Provides high accuracy and reliability in voltage monitoring applications.
Low Input Bias Current: Reduces errors and noise in sensing circuits.
High Slew Rate: Enables fast and accurate detection of voltage levels.

Application

Voltage Monitoring: Enables monitoring of threshold voltages in industrial systems, automotive applications, and consumer electronics.
Level Detection: Provides accurate detection of voltage levels in various applications.

Where to Use

The LM239AD is suitable for a wide range of applications that require monitoring and detection of voltage levels, including industrial automation, automotive electronics, and consumer devices.

How to Use

The LM239AD can be used in various circuit configurations. Set the input pins as required for your specific application. Ensure proper power supply connections and use the output pins to detect voltage levels. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the LM239AD illustrates how to connect the comparator to your desired circuit configuration. It includes connections for power supply, input and output pins, ensuring proper operation and reliable voltage detection.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

LMP7779: A similar quad voltage comparator from Texas Instruments offering comparable features and performance.
TLC2274: An alternative quad comparator from Texas Instruments with equivalent functionality.

Complementary

The LM239AD can be complemented by additional components or ICs, such as op-amps or regulators, to enhance its performance and functionality in specific applications.

Frequently Asked Questions

Q: What is the input offset voltage of the LM239AD?

A: The LM239AD has a low input offset voltage, making it suitable for high-accuracy applications.

Q: Can the LM239AD be used in automotive systems?

A: Yes, the LM239AD is suitable for use in automotive systems due to its wide operating range and reliability.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Number of channels	4	Output type	Open-collector
Propagation delay time (µs)	1.3	Vs (max) (V)	36
Vs (min) (V)	2	Vos (offset voltage at 25°C) (max) (mV)	3
Iq per channel (typ) (mA)	0.2	Input bias current (±) (max) (nA)	50
Rail-to-rail	Out	Rating	Catalog
Operating temperature range (°C)	-25 to 85	Features	Standard comparator
VICR (max) (V)	34.5	VICR (min) (V)	0

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM239AD PDF Download

FAQs

What is LM239AD?

The LM239AD is a quad differential comparator IC designed by Texas Instruments. It is commonly used in applications that require comparison of analog signals, such as voltage level detection, zero-crossing detection, and waveform shaping.

How Does LM239AD Work?

The LM239AD works by comparing the voltages present at its four input pins and providing a high or low output based on the comparison results. It has open-drain outputs which can be pulled up to a desired voltage level for compatibility with different logic families. The device is designed for use in both single-supply and dual-supply voltage systems.

How Many Pins does LM239AD have and What are the Functions of the Pinout Configuration?

The LM239AD is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

VCC+: Positive power supply pin.
VCC-: Negative power supply pin.
IN1, IN2, IN3, IN4: Differential input pins for comparators 1, 2, 3, and 4.
OUT1, OUT2, OUT3, OUT4: Output pins for comparators 1, 2, 3, and 4.
GND: Ground pin.

What are the Pros and Cons of LM239AD?

Pros:

Quad Comparator: Contains four independent comparators in a single package, providing cost and space savings.
Wide Supply Voltage Range: Compatible with a wide range of supply voltages, making it versatile for various applications.
Open-Drain Outputs: Allows for flexible output configurations and interface with different logic levels.
Low Input Offset Voltage: Provides accurate comparison of input signals with minimal offset error.

Cons:

Propagation Delay: May have non-negligible propagation delay which needs to be considered in timing-critical applications.
Noisy Environment Sensitivity: Being a comparator, it may be susceptible to noise interference in noisy environments.
Complex Pinout: The 14-pin SOIC package may require careful attention to pin connections for proper functionality.

Are There Any Equivalents/Alternatives to LM239AD for Recommendation?

The LM339 from Texas Instruments is a similar quad comparator IC that can be used as an alternative to the LM239AD.
Alternatives to the LM239AD include the LM2901 from Texas Instruments and the MC3302 from ON Semiconductor.