Comparator with latch — what the 9 ns delay buys you
The MAX9013EUA+ from Maxim Integrated is a single comparator with an internal latch, delivering a 9 ns propagation delay and complementary TTL outputs in an 8-uMAX/uSOP package. The latch holds the output state after the strobe, so you can sample a threshold crossing and freeze it for a downstream logic capture — useful in high-speed peak detectors, zero-crossing detectors, and window comparators where the decision needs to be held for a clock cycle. The 95 dB CMRR and 82 dB PSRR mean the threshold stays tight even when the supply or common-mode voltage shifts, which matters in a motor-drive control loop where the DC bus is noisy.
Supply and temperature — where it fits
Runs on a single 4.5 V to 5.5 V rail, so it drops straight into a 5 V TTL system without a separate analog supply. The -40°C to 85°C operating range covers industrial enclosures, outdoor telecom cabinets, and under-hood automotive auxiliary electronics.
Output drive and quiescent draw
Each complementary output sinks or sources 40 mA typical — enough to drive a small relay coil or a 5 V logic input directly, though you will want a series resistor for the relay. The quiescent current maxes at 2.3 mA, so it is not a micropower part but reasonable for a 5 V rail that is already powering a microcontroller. Input offset voltage is 3 mV max at 5.5 V supply; input bias current is 0.5 µA at 5 V, so source impedance up to a few kΩ will not shift the threshold noticeably.