LM2903MX/NOPB

Overview

The LM2903MX/NOPB is a dual differential voltage comparator manufactured by Texas Instruments. It features two independent channels within an SOIC-8 surface-mount package. The device operates on a single power supply ranging from 2 V to 36 V, with a typical quiescent current of 2.5 mA per channel. Key electrical specifications include a maximum input offset voltage of 7 mV and a propagation delay of 1.5 μs. It supports CMOS and TTL logic outputs via open-collector configuration and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual-channel differential input architecture for independent signal comparison
• Open-collector output stage compatible with various logic families
• Low power consumption suitable for battery-operated applications
• Wide single-supply voltage operation capability

Applications

• Over/under voltage detection circuits
• Voltage level translation between different logic domains
• Simple analog-to-digital conversion interfaces

Procurement Notes

Verify the specific suffix 'MX' against the manufacturer's official documentation to confirm it denotes the tape-and-reel variant of the standard LM2903M. Ensure the component matches the required RoHS compliance status indicated by the NOPB suffix. Cross-reference the datasheet revision date to confirm pinout and electrical characteristics remain consistent with your design requirements before finalizing procurement.

Selection Notes

Select this component when a low-cost, general-purpose dual comparator is needed for single-supply systems. It is appropriate for applications requiring moderate speed and open-collector outputs that can interface directly with microcontrollers or logic gates. Consider alternative packages if higher thermal performance or smaller footprint is required, as the SOIC-8 offers limited heat dissipation compared to larger packages.

Part Context

This part belongs to the LMx93/LM2903 family of dual comparators designed for wide voltage range single-supply operation. The LM2903 series is distinct from operational amplifiers, offering faster response times in saturation conditions. The MX suffix typically indicates reel packaging, distinguishing it from tube-packaged variants like the LM2903M, while maintaining identical electrical performance and pinout compatibility.

Replacement Considerations

LM2903M/NOPB: Pin-compatible alternative with identical electrical specifications but potentially different packaging (tube vs. reel). LM2903DR: Similar dual comparator with comparable performance metrics available in SOIC-8 reel packaging.