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LM393 - Low Offset Voltage Dual Comparator IC

Linear - Comparators 8-SOIC (0.154, 3.90mm Width) 5V 0°C~70°C LM393 ON SEMICONDUCTOR LM393DR2GPRECISION COMPARATOR, DUAL, 1.3 uS, SOIC-8

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Oct 30, 2021

Laura Jasper

Light detection circuit using Voltage Comparator LM393

Linear - Comparators 8-SOIC (0.154, 3.90mm Width) 5V 0°C~70°C LM393 ON SEMICONDUCTOR LM393DR2GPRECISION COMPARATOR, DUAL, 1.3 uS, SOIC-8

The LM393 is a Dual in package comparator IC, meaning the IC has two comparators inside a single 8-pin package. The LM393 IC can be considered as the equivalent comparator version of the most popular LM358 Op-Amp. The LM393 series are dual independent precision voltage comparators capable of single or split supply operation. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

LM393DR2G

2931In Stock

Min.: 1 Mult.: 1

Quantity	Unit Price	Ext. Price
1+	$0.15863	$0.16
10+	$0.14965	$1.5
100+	$0.14118	$14.12
500+	$0.13319	$66.6
1000+	$0.12565	$125.65

Unit Price:$0.15863

Subtotal: $0.16

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LM393 Pinout

Pinout

LM393 CAD Model

Symbol

Footprint

3D Model

LM393 Comparator Introduction

The LM393 is a Dual in package comparator IC, meaning the IC has two comparators inside a single 8-pin package. The LM393 IC can be considered as the equivalent comparator version of the most popular LM358 Op-Amp. While any Op-Amp can be made to work as a voltage comparator, the LM393 proves itself to be advantages by providing an open collector output making it suitable to drive loads. The output transistor can drive loads up to 50V and 50mA which is suitable for driving most of the TTL, MOS and RTL loads. The transistor can also make the Load to be isolated from the system ground. So if you are looking for a Voltage comparator to drive loads of these specifications then this IC might be the right choice for you.

The LM393 series are dual independent precision voltage comparators capable of single or split supply operation. These devices are designed to permit a common mode range−to−ground level with single supply operation. Input offset voltage specifications as low as 2.0 mV make this device an excellent selection for many applications in consumer, automotive, and industrial electronics.

This article provides you with a basic overview of the LM393 Voltage Dual Comparator, including its pin descriptions, features and specifications, etc., to help you quickly understand what LM393 is.

LM393 Features

● Wide Single−Supply Range: 2.0 Vdc to 36 Vdc

● Split−Supply Range: ±1.0 Vdc to ±18 Vdc

● Very Low Current Drain Independent of Supply Voltage: 0.4 mA

● Low Input Bias Current: 25 nA

● Low Input Offset Current: 5.0 nA

● Low Input Offset Voltage: 5.0 mV (max)

● Input Common Mode Range to Ground Level

● Differential Input Voltage Range Equal to Power Supply Voltage

● Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS Logic Levels

● ESD Clamps on the Inputs Increase the Ruggedness of the Device without Affecting Performance

● NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements;

AEC−Q100 Qualified and PPAP Capable

● These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

Specifications

LM393DR2G Tech Specifications

ON Semiconductor LM393DR2G technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor LM393DR2G.

Product Attribute	Attribute Value
Lifecycle Status	ACTIVE (Last Updated: 2 days ago)
Factory Lead Time	12 Weeks
Contact Plating	Tin
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154, 3.90mm Width)
Surface Mount	YES
Number of Pins	8Pins
Number of Elements	2 Elements
Operating Temperature	0°C~70°C
Packaging	Cut Tape (CT)
Published	2006
JESD-609 Code	e3
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	8Terminations
ECCN Code	EAR99
Type	General Purpose
Max Power Dissipation	570mW

Product Attribute	Attribute Value
Terminal Position	DUAL
Terminal Form	GULL WING
Peak Reflow Temperature (Cel)	260
Number of Functions	2Functions
Supply Voltage	5V
Time@Peak Reflow Temperature-Max (s)	40
Base Part Number	LM393
Pin Count	8
Output Type	CMOS, DTL, ECL, MOS, Open-Collector, TTL
Power Supplies	5V
Nominal Supply Current	1mA
Power Dissipation	570mW
Output Current	16mA
Max Supply Current	1mA
Quiescent Current	2.5mA
Response Time	1.3 μs
Voltage - Supply, Single/Dual (±)	2V~36V ±1V~18V
Halogen Free	Halogen Free
Output Current per Channel	100pA

Product Attribute	Attribute Value
Input Offset Voltage (Vos)	5mV
Voltage Gain	106.02dB
Average Bias Current-Max (IIB)	0.4μA
Supply Voltage Limit-Max	36V
Max Input Current	250nA
Dual Supply Voltage	9V
Input Bias Current	250nA
Voltage - Input Offset (Max)	5mV @ 30V
Current - Input Bias (Max)	0.25μA @ 5V
Current - Output (Typ)	16mA @ 5V
Nominal Supply Voltage (DC)	18V
Height	1.5mm
Length	5mm
Width	4mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

View Similar

LM393 Functional Block Diagram

Representative Schematic Diagram

LM393 Equivalent

Model number	Manufacturer	Description
LM293M	Fairchild Semiconductor Corporation	Comparator, 2 Func, 9000uV Offset-Max, 1400ns Response Time, BIPolar, PDSO8, SOP-8
LM393DT	STMicroelectronics	Low power dual voltage comparator
LM393DG	On Semiconductor	Comparator, Dual, Low Offset Voltage, SOIC-8 Narrow Body, 98-TUBE
LM393MX/NOPB	Texas Instruments	Low Power Low Offset Voltage Dual Comparator 8-SOIC 0 to 70
LM393M	On Semiconductor	Comparator, Dual, Low Offset Voltage, 8100-TUBE
LM393MX	Fairchild Semiconductor Corporation	Comparator, 2 Func, 9000uV Offset-Max, 1400ns Response Time, BIPolar, PDSO8, SOP-8
LM393D	Texas Instruments	Dual differential comparator, commercial grade 8-SOIC 0 to 70
LM393DR2	Freescale Semiconductor	IC,VOLT COMPARATOR,DUAL,BIPOLAR,SOP,8PIN,PLASTIC
LM393YD	STMicroelectronics	DUAL COMPARATOR, 9000uV OFFSET-MAX, 1300ns RESPONSE TIME, PDSO8, LEAD FREE, MICRO, PLASTIC, SOP-8
LM393M/NOPB	Texas Instruments	Low Power Low Offset Voltage Dual Comparator 8-SOIC 0 to 70

How to use LM393

The LM393 applications are very similar to the LM311 Comparator IC, only the specifications change a bit. Other than that the LM311 can be considered as a close replacement for LM393. Like all voltage Comparators, the LM393 also has an Inverting Pin and a Non-Inverting Pin. If the voltage at the Non-Inverting Terminal (pin 2) is high than the Inverting Terminal (pin 2), the output (pin 7) will also be high else the output will be low.

Let us assume the LM393 is powered with the +5V supply voltage circuit since this is the most used design for digital circuits. In this type, the V_CC+ (pin 8) is connected to +5V supply voltage and the V_CC (pin 4) is grounded to hold it at 0V potential. A sample circuit is shown below in which the Inverting Terminal is set to 2.5V and the Non-Inverting Terminal voltage is varied using a potentiometer. You can note that the Output voltage stays high when pin 2 has higher voltage than pin 7 and vice versa.

The pins 5 and 6 on the Op-amp are used to set the balance voltage if you want to manually adjust the DC-Offset voltage. Normally these pins are not used since the Input Offset itself is much better controlled. When not in use the pins 5 and 6 should be shorted as shown above. You can also notice that the Collector pin (pin 7) of the transistor is used for output and the emitter pin (pin 1) is grounded this type of design is called “Collector output Circuit”, however this does not have to be the case always.

LM393 Application

● Voltage Comparator Circuits

● Can drive Relay, Lamp, Motor Etc

● Peak Voltage Detector

● High Voltage Protection/Warning

● Oscillator Circuits

● Zero Crossing Detector (Single Supply)

● Zero Crossing Detector (Split Supply)

● Free−Running Square−Wave Oscillator

● Time Delay Generator

● Comparator with Hysteresis

LM393 Package

SOIC−8 Package

LM393 Generic Marking Diagram

Generic Marking Diagram

LM393 Soldering Footprint

Soldering Footprint

LM393 Manufacturer

On Semiconductor (Nasdaq: ON) is a manufacturer engaging itself in reducing energy use. It features a comprehensive portfolio of power, signal management, and logic, custom solutions that are energy efficient. It acts as a world-class supply chain with high reliability and a network of manufacturing facilities, sales, offices, and design centers in key markets through North America, Europe, and the Asia Pacific regions.

Datasheet PDF

LM393DR2G Documents

Download datasheets and manufacturer documentation for LM393DR2G

Datasheets

LM293, 393, 2903(V), NCV2903 Datasheet

LM393DR2G Documents

PCN Assembly/Origin

Mult Dev Assembly/Test Chg 25/Feb/2020

PCN Packaging

Mult MSL1 Pkg Rev 20/Dec/2018

Tape Design Chg 25/Oct/2019

Environmental Information

Material Declaration LM393DR2G

Frequently Asked Questions

What is the role of LM393 in the circuit, can you talk about it in detail?

LM393 is an open-collector output voltage comparator with two independent voltage comparators inside, and the output of each comparator has an open-collector structure. To make the comparator output a valid high level, the output terminal needs to be connected to the positive pole of the power supply. The value of the resistance depends on the size of the load.

The pin functions of LM393 and LM358 are the same, I want to know whether they can be directly interchanged?

Generally not directly interchangeable. Although the Op Amp can be used as a voltage comparator in some circuits that require less precision, the Op Amp cannot be replaced by a comparator because there is no amplification function; When LM358 is replaced with LM393, the original 393 output terminal should be removed, pull-resistance comparator; Although the symbols of the comparator and the Op Amp are the same on the circuit diagram, the two devices do have very big differences and generally cannot be interchanged.

What is the applicable frequency of LM393?

The speed of LM393 is very low, generally not more than 500K, preferably below 20K. Most of these universal comparators have poor frequency performance and can only be used for low-frequency DC comparison occasions. For high-frequency comparison, consider the high-speed op amp directly.

Is there a difference between LM393 and LM393AN?

There is a difference. The power supply voltage, input voltage and operating temperature of LM393 and LM393AN are the same. But the electrical characteristic parameters of LM393AN are better than LM393. For example: the maximum offset voltage of LM393AN is plus or minus 2.0mV, and the maximum offset voltage of LM393 is plus or minus 5.0mV.

How to use LM393 to realize voltage comparison function?

Only one LM393 can realize voltage detection, but this integrated circuit has only two operational amplifiers, so it can only output two signals. So I feel that you have to achieve the goal of displaying the three states, which is not easy to achieve with only this integrated block. It is best to add a digital basic block to drive the LED display state.

What is the difference between LM258 and LM393?

One is an operational amplifier and the other is a voltage comparator. Of course, LM258 can also be used as a voltage comparator. LM393 must be used as a comparator output terminal to add a pull-up resistor, using LM258 as a comparator can eliminate the need for an external pull-up resistor.

What is the voltage range that LM393 can compare?

The maximum differential input voltage of LM393 is 36V, but there is no difference between a large differential input voltage and a small differential input for a voltage comparator. They usually work in an open loop state. As long as there is a small differential voltage input, they are will output a highest or lowest output voltage.

FAQ