The MAX9140/MAX9141/MAX9142/MAX9144 are high-speed comparators with high speed, low power, and rail-to-rail inputs. Propagation delay is 40ns, while supply current is only 150µA per comparator. The MAX9140/MAX9141/MAX9142/MAX9144's input common-mode range extends beyond both power-supply rails. The outputs pull to within 0.3V of either supply rail without external pullup circuitry, making these devices ideal for interface with both CMOS and TTL logic. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals. The MAX9140/MAX9141/MAX9142/MAX9144 are higher-speed, lower-power, and lower-cost upgrades to industry-standard comparators MAX941/MAX942/MAX944. The MAX9140 are offered in tiny 5-pin SC70 and SOT23 packages. The MAX9141 and MAX9142 are available in 8-pin SOT23 and SO packages, while the MAX9144 is available in both 14-pin SO and TSSOP packages.
The MAX9140, MAX9141, MAX9142, and MAX9144 are high‑speed, low‑power, single‑supply comparators optimized for 3 V or 5 V operation. They feature rail‑to‑rail input ranges, internal hysteresis, and CMOS/TTL‑compatible outputs. The MAX9141 adds a latch function and a shutdown pin.
The document includes absolute maximum ratings, electrical characteristics, typical operating curves, pin configurations, ordering information, and layout recommendations for achieving the full 40 ns propagation delay performance.
| Supply Current per Comparator | 150 µA (3 V) |
|---|---|
| Output Swing | 0.3 V from either rail |
| Supply Voltage Range | 3 V to 5 V |
Each comparator draws about 150 µA at a 3 V supply.
Yes, the MAX9141 includes an internal latch controlled by the LE pin.