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LF111H-LF311H
Voltage Comparators
TL/H/5703
LF111/LF211/LF311
Voltage
Comparators
November 1994
LF111/LF211/LF311 Voltage Comparators
General Description
The LF111, LF211and LF311are FET input voltage com-
parators that virtually eliminate input current errors. De-
signedto operate overa 5.0Vto g15V rangethe LF111
canbe usedinthe most critical applications.
The extremelylow input currentsofthe LF111 allowsthe
useofa simple comparatorin applications usually requiring
input current buffering. Leakage testing, long time delaycir-
cuits, charge measurements, and high source impedance
voltage comparisonsare easily done.
Further, theLF111 canbe usedin placeofthe LM111 elimi-
nating errors dueto input currents. Seethe ‘‘application
hints’’ofthe LM311for application help.
Features Eliminates input current errors Interchangeable with LM111No needfor input current buffering
Schematic Diagram
TL/H/5703–2
Note:DoNot Ground StrobePinor
Balance/StrobePin.SeeNote7.
Connection Diagram
Metal Can Package
TL/H/5703–1
Top View
Order Number LF111H, LF111H-MILor LF311H
SeeNS PackageNumberH08C
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
