Package and mounting
The Maxim Integrated MAX9015AEKA+T is a single comparator with an integrated voltage reference, part of the Beyond-the-Rails™ series. It operates from a 1.8V to 5.5V supply, drawing just 2µA max quiescent current. The 4mV internal hysteresis cleans up noisy threshold crossings without external feedback. Outputs are CMOS push-pull, rail-to-rail, rated for 50mA typical sink/source.
28µs propagation delay — where it fits and where it doesn't
The 28µs max propagation delay is slow by comparator standards. This part is not for high-speed PWM loop control, zero-crossing detection at line frequencies, or fast overcurrent trip circuits. It is, however, fine for monitoring DC levels — battery undervoltage lockout, temperature threshold alarms, power-good assertion, and reset generation. The integrated reference eliminates the need for an external bandgap or zener, saving two components and a board trace.
Temperature grade and environment
Rated -40°C to 85°C, this part covers industrial control cabinets, outdoor telecom enclosures, and commercial equipment. It is not qualified for automotive under-hood or extended-temperature downhole applications. The SOT-23-8 package is surface-mount only; no through-hole variant exists.
Lifecycle and sourcing posture
The MAX9015AEKA+T is listed as Active with ROHS3 compliance.