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MAX917

Maxim
Part Number MAX917
Manufacturer Maxim
Description Beyond-the-Rails Comparators
Published May 2, 2005
Detailed Description 19-1512; Rev 2; 10/10 MAX917–MAX920 SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference Gener...
Datasheet PDF File MAX917 PDF File

MAX917
MAX917

Overview
19-1512; Rev 2; 10/10 MAX917–MAX920 SOT23, 1.
8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference General Description The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-theRails™ inputs and are guaranteed to operate down to +1.
8V.
The MAX917/MAX918 feature an on-board 1.
245V ±1.
5% reference and draw an ultra-low supply current of only 750nA, while the MAX919/MAX920 (without reference) require just 380nA of supply current.
These features make the MAX917–MAX920 family of comparators ideal for all 2-cell battery applications, including monitoring/management.
The unique design of the output stage limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators.
This design also minimizes overall power consumption under dynamic conditions.
The MAX917/MAX919 have a push-pull output stage that sinks and sources current.
Large internal output drivers allow rail-to-rail output swing with loads up to 8mA.
The MAX918/MAX920 have an open-drain output stage that makes them suitable for mixed-voltage system design.
Applications 2-Cell Battery Monitoring/Management Ultra-Low-Power Systems Mobile Communications Notebooks and PDAs Threshold Detectors/Discriminators Sensing at Ground or Supply Line Telemetry and Remote Systems Medical Instruments Selector Guide PART MAX917 MAX918 MAX919 MAX920 INTERNAL REFERENCE Yes Yes No No OUTPUT TYPE Push-Pull Open-Drain Push-Pull Open-Drain SUPPLY CURRENT (nA) 750 750 380 380 Typical Application Circuit appears at end of data sheet.
Features ♦ Ultra-Low Supply Current 380nA per Comparator (MAX919/MAX920) 750nA per Comparator with Reference (MAX917/MAX918) ♦ Guaranteed to Operate Down to +1.
8V ♦ Internal 1.
245V ±1.
5% Reference (MAX917/MAX918) ♦ Input Voltage Range Extends 200mV Beyond-the-Rails ♦ CMOS Push-Pull Output with ±8mA Drive Capability (MAX917/MAX919) ♦ Open-Drain Output Versions Available (MAX918/MAX920) ♦ Crowbar-Current-...


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