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MAX998

Maxim
Part Number MAX998
Manufacturer Maxim
Description Low-Power Comparators
Published May 2, 2005
Detailed Description 19-1299; Rev 3; 3/09 MAX976/MAX978/MAX998 Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators _...
Datasheet PDF File MAX998 PDF File

MAX998
MAX998

Overview
19-1299; Rev 3; 3/09 MAX976/MAX978/MAX998 Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators ________________General Description The MAX976/MAX978/MAX998 dual/quad/single, highspeed, 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 commonmode 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 Battery-Powered Systems Threshold Detectors/Discriminators 3V Systems IR Receivers Digital Line Receivers ___________Typical Operating Circuit ____________________________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) _______________Ordering Information PART* PIN-PACKAGE SOT TOP MARK MAX976ESA 8 SO — MAX976EUA 8 µMAX — MAX978ESE 16 Narrow SO — MAX978EEE 16 QSOP — MAX998ESA 8 SO — MAX998EUT-T 6 SOT23 AAAO *All devices are specified over the -40°C to +85°C temper- ature range.
__________________Pin Configurations VCC ...


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