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LM293D

Name: LM293D
Rating: 4.7 (12 reviews)

IC COMPARATOR DIFF DUAL 8SOIC

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包 SOIC (D)-8
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規格

Package	Bulk,Tube
ProductStatus	Active
Type	Differential
NumberofElements	2
OutputType	CMOS, MOS, Open-Drain, TTL
Voltage-SupplySingle/Dual(±)	2V ~ 36V, ±1V ~ 18V
Voltage-InputOffset(Max)	5mV @ 30V
Current-InputBias(Max)	0.25µA @ 5V
Current-Output(Typ)	20mA
Current-Quiescent(Max)	2.5mA
OperatingTemperature	-25°C ~ 85°C
Package/Case	8-SOIC (0.154, 3.90mm Width)
MountingType	Surface Mount

概述

Description

The LM293D is a dual voltage comparator integrated circuit (IC) widely used in electronics for comparing two voltage levels. It features two independent comparator circuits, allowing for versatile applications in signal conditioning, level shifting, and oscillators. The LM293D operates with a wide supply voltage range of 4.5V to 36V, making it suitable for various power systems.
Key characteristics include a low input bias current, high gain, and a fast response time, typically around 1 microsecond. The output can drive loads directly, thanks to its ability to sink or source up to 50 mA, and it can operate in both open-collector and push-pull configurations.
The device is commonly used in applications such as over-voltage and under-voltage detection, window comparators, and analog-to-digital converters in conjunction with microcontrollers. Its robust design and ease of integration make the LM293D a popular choice for engineers and hobbyists alike.

Features

The LM293D is a dual voltage comparator featuring the following key attributes:
1. Dual Comparator: Contains two independent, high-speed voltage comparators.

2. Wide Supply Voltage Range: Operates with a supply voltage from 2V to 36V, making it versatile for various applications.
3. Low Input Offset Voltage: Typically 2mV, allowing for precise comparisons.
4. High Speed: Fast response times, with a typical propagation delay of 300 ns, enabling rapid switching.
5. Output Configuration: Open-collector output, allowing for wired-AND logic in multi-output configurations.
6. Low Power Consumption: Consumes minimal power, suitable for battery-operated devices.
7. Temperature Range: Operates over a wide temperature range from -40°C to +125°C, suitable for industrial applications.
8. Applications: Commonly used in zero-crossing detectors, pulse-width modulation, and voltage monitoring circuits.
These features make the LM293D ideal for a variety of electronic applications requiring reliable voltage comparison.

Package

The LM293D is typically available in a dual in-line package (DIP) format, specifically a 14-pin DIP. It may also come in surface mount packages like SOIC. The DIP package allows for easy integration into breadboards and prototyping.

Pinout

The LM293D is a dual comparator integrated circuit featuring a total of 8 pins. It includes two independent voltage comparators with open-collector outputs. The pin configuration is as follows:
1. Output A - Open-collector output for Comparator A.
2. Inverting Input A - Inverting input for Comparator A.
3. Non-inverting Input A - Non-inverting input for Comparator A.
4. Ground - Common ground pin.
5. Non-inverting Input B - Non-inverting input for Comparator B.
6. Inverting Input B - Inverting input for Comparator B.
7. Output B - Open-collector output for Comparator B.
8. V+ (Supply Voltage) - Positive supply voltage pin.
The LM293D operates over a wide voltage range (typically from 2 to 36V) and is commonly used in applications requiring voltage level comparisons, such as in oscillators, waveform generators, and signal processing. Its open-collector outputs allow for easy interfacing with various logic levels.

Manufacturer

The LM293D is manufactured by Texas Instruments (TI), a renowned American technology company. Founded in 1930, Texas Instruments specializes in semiconductor design and manufacturing, particularly analog and embedded processing chips. The company is known for its innovations in various electronic applications, including calculators, sensors, and communication devices. Texas Instruments serves a wide range of industries, such as automotive, industrial, consumer electronics, and telecommunications, and is recognized for its commitment to research and development, contributing significantly to advancements in electronic components and systems.

Application

The LM293D is a dual comparator integrated circuit primarily used in applications such as voltage level detection, signal conditioning, and comparator circuits. It can be utilized in battery management systems, over-voltage and under-voltage protection, pulse width modulation (PWM) control, and as a hysteresis comparator in various electronic devices. Its versatility allows for use in automotive, industrial, and consumer electronics applications.

Equivalent

Equivalent products to the LM293D chip include the LM2903, LM339, and LM393. These chips are comparators with similar functionality, but may have different specifications like response time, input voltage range, or output configuration. Always check the datasheet for specific requirements and pin configurations to ensure compatibility in your application.