December 1994
LP265/LP365 Micropower Programmable
Quad Comparator
General Description
Features
Y
Single programming resistor to tailor power consump-
tion, input current, speed and output current drive
capability
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-
Y
Y
Wide single supply voltage range or dual supplies (4
g
g
plished by connecting a single resistor between the V
CC
V
DC
to 36 V
or 2.0 V
to 18 V
)
DC
DC
DC
and I
pins.
Low supply current drain (10 mA) and low power
SET
@
e
0.5 mA
consumption (10 mW/comparator)
I
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.
SET
e
V
5
VDC
CC
Y
Y
Uncommitted output stageÐselectable output levels
Output directly compatible with DTL, TTL, CMOS, MOS
or other special logic families
Y
Y
Input common-mode range includes ground
Differential input voltage equal to the power supply
voltage
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.
Typical Connection
Connection Diagram
Dual-In-Line Package
TL/H/5023–1
Programming Equation
TL/H/5023–2
Order Number LP365M, LP365AN or LP365N
See NS Package Numbers M16A or N16A
b
(Va
)
(V
)
b
b
1.3V
e
I
I
SET
R
SET
&
c
I
SET
22
SUPPLY
C
1995 National Semiconductor Corporation
TL/H/5023
RRD-B30M115/Printed in U. S. A.