What this quad comparator brings to the board
The MAX9201ESE+ from Maxim Integrated is a quad general-purpose comparator packing four independent TTL-output comparators into a single 16-SOIC package. It is built for signal-threshold detection, zero-crossing detectors, and level translation in industrial control, motor drives, and power-supply monitoring — anywhere you need to compare an analog voltage against a reference and get a clean logic-level output. The 86.02 dB typical CMRR and PSRR mean the thresholds stay put even when the supply or common-mode voltage wobbles, which matters on a factory floor or in an outdoor telecom cabinet where noise is the norm.
Supply and temperature — fits the industrial panel
Runs on a single supply from 4.75 V to 10.5 V, or split rails from ±2.375 V to ±5.75 V. That covers common 5 V and ±5 V analog rails without a secondary regulator. The -40°C to 85°C operating range is the industrial sweet spot — rated for motor-drive cabinets, outdoor base stations, and engine-bay electronics where the ambient can climb. The 16-SOIC footprint is a standard surface-mount package; no special reflow profile, no hot-air station needed for rework.
Performance that matters for threshold accuracy
Input offset voltage maxes at 4 mV at ±5 V. Input bias current is 5 µA max at ±5 V. Quiescent current is 7 mA, 5 mA, 3 mA depending on output state.
Lifecycle status is active — no end-of-life notice, no last-time-buy window to track. ROHS3 compliant, so it clears the material declaration for EU and global markets without an exemption expiry. For BOM planning, this is a stable line item: no surprise obsolescence, no alternate-qualification needed for the production run.