Dual comparator with wide supply tolerance
The LM393PW is a dual differential comparator from the LM393 family, built for general-purpose threshold detection and signal conditioning. It operates from a single 2V to 36V supply or dual ±1V to ±18V rails, which covers most industrial logic and sensor interface voltages without an extra regulator. Outputs are open-drain, compatible with CMOS, MOS, and TTL logic families — the collector can be pulled up to any voltage within the supply range, making it straightforward to level-shift between a 5V sensor and a 3.3V MCU.
Parametric limits that matter for the BOM
Input offset voltage is 5 mV max at 30 V supply — tight enough for window comparators and zero-crossing detectors in line-frequency monitoring. Input bias current is 0.25 µA max at 5 V, so high-impedance dividers (megaohm range) will not introduce significant error. Quiescent current max is 2.5 mA per device, and each output can sink 20 mA typical. The 8-TSSOP package keeps the footprint small, but the 0.65 mm pitch demands careful soldering profile control.
Last Buy — plan the LTB quantity now
That means Texas Instruments has announced end-of-life; the final order window is open now. Once that window closes, the part will be unavailable from the factory. Any remaining stock will move through independent distribution at market-driven pricing. For a production line that depends on this comparator, the safe move is to calculate your lifetime buy quantity and place the order before the LTB cutoff. After that, sourcing shifts to surplus channels — availability and price become unpredictable.