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Description

The MAX976 / MAX978 / MAX998ESA, 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 out puts 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

1. Single-Supply Operation Down to 2.7V
2. 20ns Propagation Delay
3. 225µA Supply Current
4. 1nA Shutdown Supply Current
5. Rail-to-Rail Outputs
6. Ground-Sensing Inputs
7. Internal Hysteresis Ensures Clean Switching