Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators

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 without 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.

For space-critical applications, the single MAX998 is available in a 6-pin SOT23 package, the dual MAX976 is available in an 8-pin µMAX® package, and the quad MAX978 is available in a 16-pin QSOP package.

Applications

* 3V Systems * Battery-Powered Applications * Digital-Line Receivers * IR Receivers * Threshold Detectors/Discriminators

* 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)