LM2903DR in LM339 / LM393 Comparators Family
The LM2903DR is a dual independent precision voltage comparator manufactured by Texas Instruments and several other major semiconductor vendors. It is designed specifically to operate from a single power supply over a wide range of voltages, though split-supply operation is also supported. This family is a standard industrial-grade version of the LM393, offering open-drain outputs that facilitate logic level translation and wired-OR connections in complex monitoring circuits. It is widely used for its robust input common-mode range that includes ground.
Variants in This Sub-Family
Variants within the LM2903 family are primarily distinguished by their temperature ratings and packaging. The 'DR' suffix indicates a SOIC package, while 'PWR' variants utilize the smaller TSSOP footprint. Industrial variants like the LM2903V are rated for extended temperature ranges up to 125C, compared to the standard 85C. Automotive-qualified 'Q1' versions include additional AEC-Q100 certification for high-reliability applications and harsher environmental stress testing.
