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LM319N

Name: LM319N
Rating: 4.7 (12 reviews)

IC COMPARATOR DUAL HI SPD 14-DIP

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製造商。部分 #LM319N
包 PDIP (N)-14
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規格

Package	Tube
ProductStatus	Obsolete
Type	General Purpose
NumberofElements	2
OutputType	Open-Collector, Open-Emitter, TTL
Voltage-SupplySingle/Dual(±)	5V ~ 30V, ±2.5V ~ 15V
Voltage-InputOffset(Max)	8mV @ ±15V
Current-InputBias(Max)	1µA @ ±15V
Current-Quiescent(Max)	12.5mA
OperatingTemperature	0°C ~ 70°C
Package/Case	14-DIP (0.300, 7.62mm)
MountingType	Through Hole

概述

Description

The LM319N is a high-speed voltage comparator designed for a variety of applications, including analog-to-digital conversion, signal conditioning, and threshold detection. It features a differential input with a wide voltage range, allowing it to compare two input voltages and output a digital signal based on their relative magnitudes.
With a typical response time of around 50 ns and a supply voltage range of 3V to 30V, the LM319N is well-suited for fast switching applications. It has open-collector outputs, enabling interfacing with different logic levels and allowing the use of pull-up resistors to match output requirements.
Key specifications include a low input offset voltage and high common-mode rejection ratio, ensuring precise comparisons even in noisy environments. The LM319N is commonly used in industrial automation, communication systems, and automotive applications. Its versatility and reliability make it a popular choice among engineers for designing robust electronic systems.

Features

The LM319N is a dual comparator IC designed for high-speed applications. Key features include:
1. Dual Comparator: Contains two independent, high-speed comparators.
2. Wide Supply Voltage: Operates with a supply voltage range of 3V to 36V, or dual supplies of ±1.5V to ±18V.
3. Fast Response Time: Typical propagation delay is 50 ns, allowing for rapid signal processing.
4. Open-Collector Output: This configuration enables wired-AND logic and interfacing with various voltage levels.
5. Low Input Offset Voltage: Typically 2 mV, ensuring accurate comparisons.
6. High Input Impedance: Allows for minimal loading on input signals.
7. Temperature Range: Rated for operation from -40°C to +125°C, making it suitable for various environments.
8. TTL Compatible: Outputs are compatible with TTL and CMOS logic levels.
The LM319N is widely used in applications such as zero-crossing detectors, analog-to-digital converters, and various signal processing tasks.

Package

The LM319N is typically available in a Dual In-Line Package (DIP) format, specifically a 14-pin DIP. This package type is suitable for through-hole mounting on printed circuit boards.

Pinout

The LM319N is a dual comparator integrated circuit with a total of 8 pins.
Pin Count: 8
Pin Functions:
1. Pin 1 (Output A): Output for the first comparator.
2. Pin 2 (Inverting Input A): Inverting input for the first comparator.
3. Pin 3 (Non-Inverting Input A): Non-inverting input for the first comparator.
4. Pin 4 (V-): Negative power supply (ground).
5. Pin 5 (Non-Inverting Input B): Non-inverting input for the second comparator.
6. Pin 6 (Inverting Input B): Inverting input for the second comparator.
7. Pin 7 (Output B): Output for the second comparator.
8. Pin 8 (V+): Positive power supply.
The LM319N is designed for high-speed applications, featuring a wide voltage range and low input bias current, making it suitable for various analog applications such as threshold detection and signal conditioning.

Manufacturer

The LM319N is manufactured by Texas Instruments (TI), a leading semiconductor company headquartered in Dallas, Texas. Texas Instruments specializes in the design and production of a wide range of analog and digital semiconductor devices. They are well-known for their innovations in various fields, including embedded processing, analog electronics, and signal processing. TI serves diverse markets such as automotive, industrial, personal electronics, and communications. They are recognized for their commitment to quality, reliability, and innovation in electronic components, making them a prominent player in the global semiconductor industry.

Application

The LM319N is a dual comparator used in various applications, including:
1. Voltage Level Detection: Monitoring voltage levels to trigger alerts or actions.
2. Zero-Crossing Detection: Identifying when an AC signal crosses zero volts.
3. Oscillator Circuits: Generating square waves and timing applications.
4. Pulse Width Modulation: Controlling motor speeds and light dimming.
5. Signal Conditioning: Enhancing or filtering signals in analog circuits.
Its high-speed operation and wide supply voltage range make it suitable for diverse electronic designs.

Equivalent

Equivalent products to the LM319N include the LM393, LM2901, and LM339. These are all dual or quad comparator chips with similar functionalities. Depending on the application, the TLC3702 and MAX9010 could also serve as alternatives. Always verify specifications to ensure compatibility with your specific circuit needs.