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MAX944：High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators

The MAX941/MAX942/MAX944 are single/dual/quad high-speed comparators optimized for systems powered from a 3V or 5V supply. These devices combine high speed, low power, and rail-to-rail inputs. Propagation delay is 80ns, while supply current is only 350µA per comparator. The input common-mode range of the MAX941/MAX942/MAX944 extends beyond both power-supply rails. The outputs pull to within 0.4V 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 MAX941 features latch enable and device shutdown. The single MAX941 and dual MAX942 are offered in a tiny µMAX® package. Both the single and dual MAX942 are available in 8-pin DIP and SO packages. The quad MAX944 comes in 14-pin DIP and narrow SO packages.

Key Features Available in µMAX Package Optimized for 3V and 5V Applications (Operation Down to 2.7V) Fast, 80ns Propagation Delay (5mV Overdrive) Rail-to-Rail Input Voltage Range Low 350µA Supply Current per Comparator Low, 1mV Offset Voltage Internal Hysteresis for Clean Switching Outputs Swing 200mV of Power Rails CMOS/TTL-Compatible Outputs Output Latch (MAX941 Only) Shutdown Function (MAX941 Only)

MAX941, MAX942, MAX944: Pin Configuration Applications/Uses 3V/5V Systems Battery-Powered Systems Line Receivers Sampling Circuits Threshold Detectors/Discriminators Zero-Crossing Detectors

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