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MAX917 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX917
Description  SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX917 Datasheet(HTML) 1 Page - Maxim Integrated Products

 
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For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX917–MAX920 nanopower comparators in
space-saving SOT23 packages feature Beyond-the-
Rails™ 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 (with-
out 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-cur-
rent 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 suit-
able 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
Features
o Ultra-Low Supply Current
380nA per Comparator (MAX919/MAX920)
750nA per Comparator with Reference
(MAX917/MAX918)
o Guaranteed to Operate Down to +1.8V
o Internal 1.245V ±1.5% Reference
(MAX917/MAX918)
o Input Voltage Range Extends 200mV
Beyond-the-Rails
o CMOS Push/Pull Output with ±8mA Drive
Capability (MAX917/MAX919)
o Open-Drain Output Versions Available
(MAX918/MAX920)
o Crowbar-Current-Free Switching
o Internal Hysteresis for Clean Switching
o No Phase Reversal for Overdriven Inputs
o Space-Saving SOT23 Package
SOT23, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
________________________________________________________________
Maxim Integrated Products
1
VEE
IN- (REF)
IN+
1
5
VCC
OUT
MAX917
MAX918
MAX919
MAX920
SOT23-5
TOP VIEW
2
3
4
( ) ARE FOR MAX917/MAX918.
PART
MAX917EUK-T
MAX917ESA
-40°C to +85°C
-40°C to +85°C
TEMP.
RANGE
PIN-
PACKAGE
5 SOT23-5
8 SO
Pin Configurations continue at end of data sheet.
Typical Application Circuit appears at end of data sheet.
Pin Configurations
Selector Guide
Ordering Information
SOT
TOP MARK
ADIQ
MAX918EUK-T
MAX918ESA
ADIR
-40°C to +85°C
-40°C to +85°C
5 SOT23-5
8 SO
MAX919EUK-T
MAX919ESA
ADIS
-40°C to +85°C
-40°C to +85°C
5 SOT23-5
8 SO
MAX920EUK-T
MAX920ESA
ADIT
-40°C to +85°C
-40°C to +85°C
5 SOT23-5
8 SO
Open-Drain
Yes
MAX918
750
380
380
750
SUPPLY
CURRENT
(nA)
Open-Drain
No
MAX920
PART
Push/Pull
No
MAX919
Push/Pull
Yes
MAX917
OUTPUT
TYPE
INTERNAL
REFERENCE
Beyond-the-Rails is a trademark of Maxim Integrated Products.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
19-1512; Rev 0; 7/99


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