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PDF LP365AN Data sheet ( Hoja de datos )
| Número de pieza | LP365AN | |
| Descripción | Micropower Programmable Quad Comparator | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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December 1994
LP265 LP365 Micropower Programmable
Quad Comparator
General Description
The LP365 consists of four independent voltage compara-
tors The comparators can be programmed four at the
same time for various supply currents input currents re-
sponse times and output current drives This is accom-
plished by connecting a single resistor between the VCC
and ISET pins
These comparators can be operated from split power sup-
plies or from a single power supply over a wide range of
voltages The input can sense signals at ground level even
with single supply operation The unique output NPN tran-
sistor stages are uncommitted to either power supply They
can be connected directly to various logic system supplies
so that they are highly flexible to interface with various logic
families
Application areas include battery power circuits threshold
detectors zero crossing detectors simple serial A D con-
verters VCO multivibrators voltage converters power se-
quencers and high performance V F converters and RTD
linearization
Features
Y Single programming resistor to tailor power consump-
tion input current speed and output current drive
capability
Y Wide single supply voltage range or dual supplies (4
VDC to 36 VDC or g2 0 VDC to g18 VDC)
Y Low supply current drain (10 mA) and low power
consumption (10 mW comparator)
VCC e 5VDC
ISET e 0 5 mA
Y Uncommitted output stage selectable output levels
Y Output directly compatible with DTL TTL CMOS MOS
or other special logic families
Y Input common-mode range includes ground
Y Differential input voltage equal to the power supply
voltage
Typical Connection
Connection Diagram
Dual-In-Line Package
TL H 5023–1
Programming Equation
(Va)b(Vb)b1 3V
ISETe
RSET
ISUPPLY 22cISET
TL H 5023 – 2
Order Number LP365M LP365AN or LP365N
See NS Package Numbers M16A or N16A
C1995 National Semiconductor Corporation TL H 5023
RRD-B30M115 Printed in U S A
1 page  
Typical Applications
Gated 4-Phase Oscillator
‘‘Voting’’ Comparator
TL H 5023 – 4
fe20 kHz
1
fe
1 6RtCt
All four phases run when X is low When X is high oscillation stops and
power drain is zero
TL H 5023 – 5
If VE e 0 25V then VOUT will be low if 1 of the 3 other outputs are low
Choice of VE e 0 50V causes VOUT to be low if 2 of the 3 other outputs are
low VE e 0 75V will cause VOUT to be low if all 3 other outputs are low
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LP365AN.PDF ] | |
Hoja de datos destacado
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