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General Description

The MAX976/MAX978/MAX998 dual/quad/single, high speed, low-power comparators are optimized for +3V/+5V single-supply applications. They achieve a 20ns propagation delay while consuming only 225μA supply current per comparator. The MAX998 features a low-power shutdown mode that places the output in a high-impedance state and reduces supply current to 1nA.

The MAX976/MAX978/MAX998 inputs have a common mode voltage range that extends 200mV below ground. Their outputs are capable of rail-to-rail operation with out external pullup circuitry, making these devices ideal for interface with CMOS/TTL logic. All inputs and outputs can tolerate a continuous short-circuit fault condition to either rail. The comparators’ internal hysteresis ensures clean output switching, even with slow-moving input signals.

Features

? Single-Supply Operation Down to 2.7V

? 20ns Propagation Delay

? 225μA Supply Current

? 1nA Shutdown Supply Current

? Rail-to-Rail Outputs

? Ground-Sensing Inputs

? Internal Hysteresis Ensures Clean Switching

? Available in Space-Saving Packages

?? SOT23 (MAX998)

?? μMAX (MAX976)

?? QSOP (MAX978)

Applications

?? Battery-Powered Systems

?? Threshold Detectors/Discriminators

?? 3V Systems

?? IR Receivers

?? Digital Line Receivers