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LM393ADGKR

TILM393ADGKR

Texas Instruments
Comparator Standard (General Purpose) Open-Collector, Rail-to-Rail 8-VSSOP
Active14,659 in stock
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Overview

The LM393ADGKR is a dual-channel, general-purpose voltage comparator designed for operation from a single power supply over a wide range of voltages. It features an open-collector output stage that allows for level shifting and can drive loads up to 20mA, making it highly versatile for mixed-signal designs. This specific variant is housed in a compact 8-VSSOP package, saving significant board space compared to standard SOIC options.

Why Choose This Part

The device offers a very wide supply range from 5V up to 30V and maintains low quiescent current at 0.6mA typical per channel. Its open-collector architecture provides maximum flexibility for wired-OR logic and output voltage level translation. Additionally, the input common-mode voltage range includes ground, allowing direct sensing of signals near 0V in single-supply systems.

Applications

Limit Comparators
Monitoring sensor voltages against a fixed reference to trigger alarms or logic interrupts when thresholds are exceeded.
Zero-Crossing Detectors
Identifying the point where an AC signal crosses zero for timing synchronization or frequency measurement.
Clock Building Blocks
Utilizing the high-gain open-collector output to create simple square-wave oscillators or pulse generators.
Level Shifting
Interfacing between different logic families (e.g., 5V to 3.3V) by using the open-collector output with a specific pull-up voltage.

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 0degC ~ 70degC
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) 2mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 36V, +/-1V ~ 18V

Getting Started

To evaluate this part, place it on a VSSOP-8 to DIP adapter for breadboard prototyping or use a generic dual-comparator evaluation module. Ensure a pull-up resistor is connected to the output pin, as the open-collector stage cannot drive a high logic level on its own. For precision applications, keep the 0.25uA input bias current in mind when selecting high-impedance divider networks.

Part of LM Comparators family » LM393

LM393 Family

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

Part Number Package Temp Range Current - Output (Typ) Current - Quiescent (Max) Current - Input Bias (Max) Voltage - Input Offset (Max) Stock
LM393ADGKR (this part) TSSOP-8 0degC ~ 70degC 20mA 2.5mA 0.25uA 2mV 14,659
LM393DT (STMicroelectronics) SOIC-8 0degC ~ 70degC 18mA 2.5mA 0.25uA 5mV 69,093
LM393BIPWR TSSOP-8 -40degC ~ 85degC 21mA 600uA 0.025uA 2.5mV 10,964
LM393APWR TSSOP-8 0degC ~ 70degC 20mA 2.5mA 0.25uA 2mV 17,576
LM393BIDR SOIC-8 -40degC ~ 85degC 21mA 600uA 0.25uA 2mV 1,293

Also Consider

LM393DR TITexas Instruments - Standard SOIC-8 version of the same dual comparator for designs where board space is less critical and hand-soldering is preferred.