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LM2901DR

TILM2901DR

Texas Instruments
Quad comparator with similar functional behaviour; commonly chosen when an alternative temperature or availability option in the same family is desired.
Active15,658 in stock

Overview

The LM2901DR is a general-purpose quad differential comparator designed to operate from a single power supply over a wide range of voltages from 3V to 36V. It features four independent voltage comparators with open-collector outputs, allowing for easy integration in logic systems and level-shifting applications. This variant is specifically rated for an extended industrial temperature range of -40 to 125 degrees Celsius.

Why Choose This Part

The device offers a high maximum operating voltage of 36V and a low quiescent current of 1.6mA (typical at 36V), making it suitable for high-voltage industrial rails. Its open-collector architecture provides flexibility in wired-OR connections and multi-voltage logic interfacing.

Applications

Limit Threshold Detection
Used in monitoring circuits to trigger an output when an input voltage exceeds or falls below a specific reference voltage.
Oscillators and Multivibrators
Implementing timing circuits and square wave generators in control logic systems.
Industrial Sensor Conditioning
Converting analog signals from industrial sensors into digital signals for processing by microcontrollers.
Voltage Level Translation
Utilizing the open-collector output to interface between different logic voltage domains.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector
Mounting Type Surface Mount
Package / Case 14-SOIC (0.154", 3.90mm Width)
Number of Elements 4
Operating Temperature -40degC ~ 125degC
Current - Output (Typ) 20mA
Supplier Device Package 14-SOIC
Current - Quiescent (Max) 2.5mA
Current - Input Bias (Max) 0.25uA @ 5V
Voltage - Input Offset (Max) 7mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 30V, +/-1V ~ 15V

Getting Started

To use the LM2901DR, provide a supply voltage between 3V and 36V and connect the open-collector output to a pull-up resistor. Since this is a standard 14-SOIC package, it can be prototyped using a SOIC-to-DIP adapter board or integrated directly into a PCB layout following the standard quad-comparator pinout.

LM2901 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Temp Range Current - Output (Typ) Voltage - Input Offset (Max) Voltage - Supply, Single/Dual (+/-) Stock
LM2901DR (this part) SOIC-14 -40degC ~ 125degC 20mA 7mV 2V 15,658
LM2901N/NOPB DIP-14 -40degC ~ 85degC 16mA 7mV 2V 2,985
LM2901N DIP-14 -40degC ~ 125degC 20mA 7mV 2V 3,613
LM2901QPWRQ1 TSSOP-14 -40degC ~ 125degC 20mA 7mV 2V 4,750
Also available as: LM2901D/NOPB

Also Consider

LM339ADR TITexas Instruments - A similar quad comparator often used when the wider industrial temperature range of the LM2901 is not required.
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