Device identity and what it does on the board
The LM2903P: It compares two analog voltages and outputs a digital logic level — open-drain, CMOS, MOS, or TTL — depending on the pull-up configuration.
Parametric fit for BOM verification
Each comparator can sink up to 20 mA at the output (typical), enough to drive a small relay coil, an LED indicator, or a logic input directly without a buffer stage. Maximum quiescent current is 2.5 mA for both comparators combined — a low standing draw that keeps the thermal budget tight in a densely populated through-hole board.
Active lifecycle and compliance documentation
Texas Instruments provides full RoHS and REACH declarations for this part number.