LM393ADRE4

Overview

The LM393ADRE4 is a dual differential voltage comparator manufactured by Texas Instruments. It features open-collector outputs compatible with CMOS and TTL logic families. The device operates on a single supply voltage ranging from 2V to 36V, or dual supplies of ±1V to ±18V. Key electrical parameters include a maximum input offset voltage of 2mV at 30V, a maximum input bias current of 0.25µA at 5V, and a typical static supply current of 2.5mA. It supports surface-mount installation in an 8-SOIC package with a width of 3.90mm.

Feature Summary

• Dual differential input configuration for precise signal comparison
• Open-collector output structure allowing wired-AND connections
• Wide single-supply operating voltage range from 2V to 36V
• Compatible with standard digital logic families including CMOS and TTL

Applications

• Overvoltage and undervoltage detection circuits
• Threshold detection and level sensing applications
• Digital communication interface signal conditioning
• On-off control systems requiring precise switching points

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance status according to manufacturer documentation. Confirm the package type matches the required PCB footprint, as the base part number may be available in other configurations such as DIP or SOIC without the reel designation. Ensure the ordering information aligns with the specific tape-and-reel quantity requirements for automated assembly processes.

Selection Notes

Select this component when a dual-channel comparator with wide supply voltage tolerance is required. The open-collector output necessitates external pull-up resistors, which must be sized appropriately for the target logic family voltage levels. Consider the propagation delay and input offset voltage specifications if high-speed or high-precision applications are involved. Verify thermal performance within the specified operating temperature range of 0°C to 70°C.

Part Context

The LM393ADRE4 belongs to the LM393 series of dual differential comparators from Texas Instruments. This series is designed for general-purpose voltage comparison tasks using single power supplies. The 'ADR' suffix typically denotes an 8-SOIC surface-mount package supplied in tape-and-reel format, while 'E4' signifies environmental compliance attributes defined by the manufacturer.

Replacement Considerations

LM393ADR serves as a direct functional substitute within the same product line. LM393M/NOPB offers similar performance in a different package variant. Cross-reference datasheets to ensure pinout compatibility and verify that electrical parameters such as input bias current and propagation delay meet the specific design requirements.