LM393DE4

Overview

The LM393DE4 is a dual differential voltage comparator manufactured by Texas Instruments. It features open-collector outputs and operates from a single power supply ranging from 2V to 36V, or dual supplies of ±1V to ±18V. The device provides two independent channels within an 8-pin SOIC package. Key electrical characteristics include a typical propagation delay of 1.3μs at 15V and a maximum input offset voltage of 5mV. It supports a wide common-mode input voltage range that includes ground.

Feature Summary

• Dual independent differential voltage comparison channels
• Open-collector output configuration for flexible interfacing
• Wide single or dual power supply operation capability
• Input common-mode voltage range extends to ground potential

Applications

• Overvoltage and undervoltage detection circuits
• Temperature sensing and control systems
• Level shifting and digital interface logic conversion

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance status according to current manufacturer documentation. Confirm the package designation corresponds to the standard 8-pin Small Outline Integrated Circuit (SOIC) physical dimensions. Ensure the operating temperature range aligns with the commercial grade specifications defined in the official datasheet before finalizing procurement orders.

Selection Notes

Select this component when dual-channel comparison is required within a compact surface-mount footprint. The open-collector outputs allow for wired-AND configurations and easy interfacing with various logic families. Consider the 1.3μs propagation delay for timing-sensitive applications. Verify that the 2V minimum supply voltage meets the system's power constraints compared to higher-voltage alternatives.

Part Context

This part belongs to the industry-standard LMx93 family of dual voltage comparators. It serves as a direct functional equivalent to the original LM393 but incorporates modern manufacturing updates such as lead-free terminations. The DE4 suffix specifically denotes the SOIC-8 package variant with environmental compliance attributes, maintaining pin compatibility with legacy designs while meeting current regulatory standards.

Replacement Considerations

LM393D is the non-compliant predecessor offering identical electrical performance. LM393DRG4 is the tape-and-reel version of the same compliant device. LM393PWR provides the same functionality in a TSSOP-8 package.