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LM393N/NOPB

TILM393N/NOPB

Texas Instruments
Dual-comparator in a smaller PDIP-8 package for designs that need only one or two channels or want a lower-cost, compact through-hole option.
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Overview

The LM393N/NOPB is a dual-comparator integrated circuit in a compact 8-pin PDIP package. It offers two independent precision voltage comparators designed to operate from a single power supply over a wide voltage range. Its low power consumption and versatile output make it suitable for a variety of general-purpose comparator applications.

Why Choose This Part

This comparator offers a wide supply voltage range from 2V to 36V, enabling its use in diverse systems. Its low quiescent current of 400uA makes it suitable for power-sensitive applications. The open-collector output is compatible with various logic families (TTL, DTL, ECL, MOS, CMOS) and allows for sensing near ground.

Applications

Threshold Detection
Used for simple voltage threshold detection in control systems, allowing a system to react when a specific voltage level is reached.
Window Comparators
Can be configured as a window comparator to determine if an input voltage falls within a specified range, useful in monitoring applications.
Square Wave Oscillators
Forms the basis for simple square wave oscillators or function generators when combined with appropriate RC timing networks.
Analog-to-Digital Conversion (SAR ADCs)
Functions as a building block in simple successive approximation register (SAR) analog-to-digital converters.
Level Shifting
Its open-collector output allows for easy interfacing with different logic families, making it suitable for level shifting between logic systems.
Battery-Powered Devices
The very low supply current drain of 0.4mA at 5V makes it an excellent choice for battery-operated equipment where power efficiency is critical.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector, Rail-to-Rail
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Number of Elements 2
Operating Temperature 0degC ~ 70degC
Current - Output (Typ) 16mA @ 5V
Propagation Delay (Max) 700ns
Supplier Device Package 8-PDIP
Current - Quiescent (Max) 2.5mA
Current - Input Bias (Max) 0.25uA @ 5V
Voltage - Input Offset (Max) 5mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 36V, +/-1V ~ 18V

Getting Started

To get started with the LM393N/NOPB, simply connect it to a breadboard. Refer to the datasheet for typical application circuits, such as zero-crossing detectors or square-wave oscillators. No specialized development boards or complex software toolchains are required, making it ideal for rapid prototyping with basic passive components.

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