LM393ST

Overview

The LM393ST is a low-power, dual-voltage comparator designed to operate from a single power supply over a wide range of voltages. It features a common-mode input voltage range that includes ground, making it suitable for low-voltage systems and battery-powered devices. The open-collector output configuration allows for easy level shifting and integration into a variety of digital logic families.

Why Choose This Part

The LM393ST is highly versatile due to its split-supply and single-supply compatibility, spanning 2V to 36V. Its low supply current of approximately 0.4mA (independent of supply voltage) helps minimize power consumption in portable designs. The Mini-SO8 (MSOP-8) package provides a significant footprint reduction compared to standard SOIC-8 packages while maintaining the same electrical performance.

Applications

Getting Started

When designing with the LM393ST, remember to include a pull-up resistor on the open-collector output to define the logic-high voltage level. Ensure the input signal does not exceed the common-mode range, and place a 0.1uF ceramic bypass capacitor close to the Vcc pin to suppress switching noise. For prototyping, this part can be mounted on an MSOP-8 to DIP adapter for use with standard breadboards.

LM393 Family

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