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LM2903DGKR

TILM2903DGKR

Texas Instruments
Comparator Standard (General Purpose) Open-Collector, Rail-to-Rail 8-VSSOP
Active46,953 in stock
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Overview

The LM2903DGKR is a dual-channel, general-purpose voltage comparator designed for operation over a wide range of supply voltages from 2V to 30V. It features two independent comparators with open-collector outputs, allowing for easy level shifting and logic interfacing in mixed-voltage systems. The device is housed in a compact 8-VSSOP package and is rated for a wide industrial temperature range of -40C to 125C.

Why Choose This Part

The LM2903DGKR offers a broad supply voltage range and very low input bias current of 0.25uA maximum, which reduces error in high-impedance circuits. Its open-collector output architecture provides flexibility in wired-OR logic configurations and simplified interfacing to various microcontroller input levels.

Applications

Limit Comparators
Monitoring sensor voltages against a fixed reference to trigger alarms or system shutdowns.
Level Translators
Using the open-collector output to interface between different logic families such as 3.3V and 5V rails.
Zero-Crossing Detectors
Identifying the point where an input AC signal crosses the ground reference for timing or phase control.
Pulse Generators
Configured with external passive components to create basic relaxation oscillators or square wave generators.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector, Rail-to-Rail
Mounting Type Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Number of Elements 2
Operating Temperature -40degC ~ 125degC
Current - Output (Typ) 20mA
Supplier Device Package 8-VSSOP
Current - Quiescent (Max) 2.5mA
Current - Input Bias (Max) 0.25uA @ 5V
Voltage - Input Offset (Max) 7mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 36V, +/-1V ~ 18V

Getting Started

To evaluate the LM2903DGKR, prototype on a VSSOP-8 to DIP adapter board for breadboard compatibility. Ensure a pull-up resistor is connected to the output pin, as the open-collector stage cannot drive high without one. Decouple the supply pin with a 0.1uF ceramic capacitor placed close to the IC to maintain stability during high-speed switching.

Part of LM Comparators family » LM2903

LM2903 Family

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

Part Number Package Output Type Temp Range Current - Output (Typ) Current - Quiescent (Max) Current - Input Bias (Max) Stock
LM2903DGKR (this part) TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 46,953
LM2903DMR2G (onsemi) TSSOP-8 Open-Collector, Ra.. -40degC ~ 105degC 16mA 2.5mA 0.25uA 16,228
LM2903YPT (STMicroelectronics) TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 16mA 2.5mA 0.25uA 99,631
LM2903AVQDRG4Q1 SOIC-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 111,707
LM2903BQPWRQ1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 21mA 600uA 0.025uA 7,138
LM2903BIDSGR WFDFN-8 Open-Collector, Ra.. -40degC ~ 125degC 21mA 600uA 0.025uA 17,300
LM2903BIDGKR TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 21mA 600uA 0.025uA 349
LM2903FVT-E2 (Rohm Semiconductor) TSSOP-8 Open-Collector -40degC ~ 125degC 16mA 1mA 0.25uA 7,865
LM2903VDR2G (onsemi) SOIC-8 Open-Collector, Ra.. -40degC ~ 125degC 16mA 2.5mA 0.25uA 2,303
LM2903AVQPWRG4Q1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 4,519
LM2903AVQPWR TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 726
LM2903ITL/NOPB WFBGA-8 Open-Collector, Ra.. -40degC ~ 85degC 16mA 2.5mA 0.25uA 1,000
LM2903AVQDRQ1 SOIC-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 17,764
LM2903VQPWRQ1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 2,109
LM2903QPWRQ1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 7,062

Also Consider

LM2903DR TITexas Instruments - This is the same dual comparator in a larger, easier-to-solder SOIC-8 package for applications with less restrictive space requirements.
LM393ADGKR TITexas Instruments - A pin-compatible alternative for applications with narrower temperature requirements (0C to 70C) that may offer tighter offset voltage specifications.