LM393ADG4

Overview

The LM393ADG4 is a dual differential voltage comparator manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2 V to 36 V, or dual supplies of ±1 V to ±18 V. The device features open-collector outputs compatible with CMOS and TTL logic families. Key electrical specifications include a maximum input offset voltage of 5 mV at 30 V, a typical response time of 1.3 µs, and a quiescent current of 2.5 mA. It is housed in an 8-SOIC package with a width of 3.90 mm and supports an operating temperature range of 0°C to 70°C.

Feature Summary

• Dual differential input configuration for precise voltage comparison
• Open-collector output structure enabling wired-AND connections
• Wide single-supply voltage operation capability
• CMOS and TTL logic output compatibility

Applications

• Overvoltage detection circuits
• Window comparator designs
• Level shifting applications
• Temperature sensing interfaces

Procurement Notes

Verify the specific suffix 'DG4' against the manufacturer's official datasheet to confirm pinout and electrical tolerances match design requirements. Confirm RoHS compliance status as indicated in the component documentation. Ensure the SOIC-8 package dimensions align with PCB footprint constraints before finalizing procurement decisions.

Selection Notes

Select this component when a dual-channel comparator with wide supply voltage flexibility is required. The open-collector output allows interfacing with various logic levels without additional level shifters. Consider the 5 mV input offset voltage specification for accuracy needs. Verify thermal performance within the specified 0°C to 70°C operating range for the intended application environment.

Part Context

The LM393ADG4 belongs to the LM393 family of dual voltage comparators from Texas Instruments. This series is designed for general-purpose analog comparison tasks. The 'A' designation typically indicates improved specifications such as lower input offset voltage compared to standard variants. The device serves as a fundamental building block for analog signal processing and control systems.

Replacement Considerations

LM393DRG4: Direct pin-compatible alternative with standard specifications. LM393AD: Equivalent performance in different packaging options. LM393M/NOPB: Similar functionality in a SOIC-8 MSOP variant.