Dual comparator with a built-in voltage reference — one less IC on the BOM
The Maxim Integrated MAX933CPA+ is a dual comparator that integrates a precision voltage reference on-chip, saving the external reference IC and its support passives. Each of the two comparators includes 50 mV of built-in hysteresis, which eliminates output chatter on slow-moving input signals without external positive feedback resistors. The CMOS/TTL-compatible outputs sink or source directly to logic inputs. Supply range spans 2.5 V to 11 V single supply (or ±1.25 V to ±5.5 V dual). Maximum quiescent current is 6 µA. Packaged in an 8-pin DIP (0.300" width, 7.62 mm pitch) with through-hole mounting — a breadboard-friendly footprint that also suits low-volume production where hand-assembly or socketing is preferred.
12 µs propagation delay — design for the speed you actually need
The 12 µs maximum propagation delay is the headline speed rating. This is not a high-speed comparator for switching power supply feedback loops or data recovery — those applications need sub-microsecond parts. But for thermal shutdown, battery undervoltage lockout, window comparators, or any low-frequency threshold detection, 12 µs is more than adequate and the low power penalty is minimal. The integrated reference means the threshold accuracy depends on the internal reference stability, not an external resistor divider — one less tolerance stack to budget.
ROHS3 compliant. Through-hole DIP packaging means it remains a viable choice for legacy designs, socketed prototypes, and low-volume builds where surface-mount rework is not available.