Dual comparator for low-power signal conditioning
Outputs are CMOS and TTL compatible, so it can drive logic inputs directly without a pull-up resistor in many cases. The 12µs propagation delay is adequate for slow-changing signals like temperature or pressure sensor outputs, but not for high-speed switching applications.
12 µs propagation delay — what it means for the loop
With a maximum propagation delay of 12µs, this comparator responds to input transitions in the tens-of-microseconds range. That is fine for monitoring a thermocouple or a slow ramp, but it will not work for PWM current sensing or high-frequency zero-cross detection. The 80dB CMRR and 80dB PSRR keep the threshold stable across common-mode shifts and supply ripple, which matters when the reference is derived from a resistor divider on a noisy rail.
5 µA quiescent current — the battery-powered pick
Quiescent current maxes out at 5µA per comparator, so the dual part draws under 10µA total. That is the spec that makes this part the choice for a portable threshold alarm or a wake-up circuit where every microamp counts. The 50mA output current capability is generous for a low-power comparator — enough to drive a small LED or a logic input without a buffer.
Lifecycle and sourcing
The MAX922ESA+T is listed as Active with ROHS3 compliance.