Dual comparator with an internal voltage reference — what that means for the BOM
The Analog Devices MAX9017BEKA+T is a dual comparator that integrates a voltage reference on-chip — the 'Type with Voltage Reference' designation means you skip the external reference resistor network or dedicated reference IC that a standard comparator would need. That saves one or two line items and the board area they occupy. Part of the Beyond-the-Rails™ series, this comparator operates from a single 1.8 V to 5.5 V supply and delivers CMOS push-pull rail-to-rail outputs — no pull-up resistor required on the output side, which further reduces component count. The 4 mV internal hysteresis cleans up noisy threshold crossings without external positive feedback, so the comparator won't chatter on a slowly ramping signal. With a maximum quiescent current of 2.8 µA per comparator (both channels), this part fits battery-powered threshold detectors, wake-up circuits, and low-power window comparators where every microamp matters. The 28 µs propagation delay is the time from input crossing the threshold to output transition — fast enough for most power-supply sequencing and over-voltage/under-voltage lockout loops, but not intended for high-speed data or RF-level detection. Operating temperature spans -40°C to 85°C, covering industrial control cabinets, outdoor telecom enclosures, and automotive cabin environments.
Sourcing and lifecycle — active, no obsolescence concern
The MAX9017BEKA+T has an Active product status with ROHS3 compliance. No last-time-buy or end-of-life notice is on record.