The LP365 consists of four independent voltage comparators. The comparators can be programmed, four at the
same time, for various supply currents, input currents, response times and output current drives. This is accomplished by connecting a single resistor between the V
and I
pins.
SET
CC
These comparators can be operated from split power supplies 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 transistor 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 converters, VCO, multivibrators, voltage converters, power sequencers, and high performance V/F converters, and RTD
linearization.
Typical Connection
Features
Y
Single programming resistor to tailor power consumption, input current, speed and output current drive
capability
Y
Wide single supply voltage range or dual supplies (4
V
to 36 VDCorg2.0 VDCtog18 VDC)
DC
Y
Low supply current drain (10 mA) and low power
consumption (10 mW/comparator)
e
V
5
CC
Y
Y
VDC
Uncommitted output stageÐselectable output levels
Output directly compatible with DTL, TTL, CMOS, MOS
@
e
I
SET
or other special logic families
Y
Input common-mode range includes ground
Y
Differential input voltage equal to the power supply
voltage
Connection Diagram
Dual-In-Line Package
0.5 mA
TL/H/5023– 1
Programming Equation
(Va)b(Vb)b1.3V
e
I
SET
I
SUPPLY
C
1995 National Semiconductor CorporationRRD-B30M115/Printed in U. S. A.
&
22
TL/H/5023
R
SET
c
I
SET
Order Number LP365M, LP365AN or LP365N
See NS Package Numbers M16A or N16A
TL/H/5023– 2
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage36 V
Differential Input Voltage
Input Voltage (Note 1)
Output Short Circuit to VE(Note 2)Continuous
V
with Respect to V
OUT
E
b
V
E
ESD Tolerance (Note 10)2000V
DC
b
0.3V toa36 V
7VsV
OUT
org18 V
g
36 V
s
a
V
E
DC
DC
DC
36V
Power Dissipation (Note 3)500 mW500 mW
M Package N Package
T
Max115§C115§C
j
i
jA
Lead Temp.
(SolderingÐ10 sec.)260
(Vapor PhaseÐ60 sec.)215
(InfraredÐ15 sec.)220
Operating Temp. Range LP365:0
Storage Temp. Range
115§C/W90§C/W
C
§
s
a
70§C
A
s
a
150§C
A
b
40§CsT
C
§
C
§
CsT
§
Electrical Characteristics (Note 4) Low power V
SymbolParameterConditions
V
OS
I
OS
I
B
A
VOL
V
CM
Input OffsetV
VoltageR
Input OffsetV
CurrentLP265
Input BiasV
CurrentLP265
Large SignalR
Voltage Gain(Min)
Input CommonMode Voltage(Max)
e
OV,
CM
e
100(Max)
S
e
0V22050425 75
CM
e
0V10501251575200
CM
e
100k
L
Range
CMRRCommon-Mode0sV
Rejection Ratio(Min)
PSRRSupply Voltage
Rejection Ratio
I
S
V
OH
V
OL
I
SINK
I
LEAK
t
R
Supply CurrentAll Inputse0V,
Output VoltageV
HighV
Output VoltageV
Low(Max)
Output SinkV
CurrentV
Output LeakageV
CurrentV
Response TimeV
s
CM
g
2.5VsV
s
g
3.5V(Min)
e %
R
L
e
5V,
C
e
0V,4.94.54.94.5
E
e
R
100k
L
e
0V
E
e
0V,
E
e
0.4V(Min)
O
e
5V,
C
e
0V(Max)
E
e
5V,
CC
e
V
0V,
E
e
R
5k,44ms
L
e
C
10 pF
L
(Note 7)
TypLimitLimitTypLimitLimit(Limit)
(Note 5)(Note 6)(Note 5)(Note 6)
13 636 9
50050503002525
3V
S
857570807570
7565657065
215250300225275300
2.41.20.62.00.80.4
250500021005000
e
S
5V, I
SET
e
10 mA
LP365ALP365
TestedDesignTestedDesignUnits
mV
nA
425 150
(Max)
nA
1575300
(Max)
V/mV
0000
3333
V
V
(Min)
dB
65dB
mA
(Max)
V
(Min)
0.4
0.4
0.40.4
V
mA
nA
2
Electrical Characteristics (Continued) (Note 8) High power V
e
g
S
15V, I
SET
e
100 mA
LP365ALP365
SymbolParameterConditions
TestedDesignTestedDesign
TypLimitLimitTypLimitLimit
Units
(Limit)
(Note 5)(Note 6)(Note 5)(Note 6)
V
OS
I
OS
I
B
A
VOL
V
CM
Input OffsetV
VoltageR
Input OffsetV
CurrentLP265
Input BiasV
CurrentLP265
Large SignalR
Voltage Gain(Min)
Input CommonMode Voltage(Max)
e
0V,
CM
e
100(Max)
S
e
0V5501001090200
CM
13 636 9
1090500
e
0V6020050080300500
CM
80300800
e
15k
L
500100100500100100
b
15
b
15
b
15
b
15
mV
(Max)
(Max)
V/mV
Range
13131313
CMRRCommon-Mode
Rejection Ratio
PSRRSupply Voltage
Rejection Ratio
I
S
V
OH
V
OL
I
SINK
I
LEAK
t
R
Note 1: The input voltage is not allowed to go 0.3V above Vaorb0.3V below Vbas this will turn on a parasitic transistor causing large currents to flow through
the device.
Note 2: Short circuits from the output to V
allowed to exceed 30 mA. The output should not be shorted to V
Note 3: For operating at elevated temperatures, these devices must be derated based on a thermal resistance of i
Note 4: Boldface numbers apply at temperature extremes. All other numbers apply at T
V
C
Note 5: Guaranteed and 100% production tested.
Note 6: Guaranteed (but not 100% production tested) over the operating temperature and supply voltage ranges. These limits are not used to calculate out-going
quality levels.
Note 7: The response time specified is for a 100 mV input step with 5 mV overdrive.
Note 8: Boldface numbers apply at temperature extremes. All other numbers apply at T
V
C
Note 9: See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ for other methods of soldering surface mount devices.
Note 10: Human body model, 1.5 kX in series with 100 pF.
Supply CurrentAll Inputse0V,2.633.32.83.53.7
Output VoltageV
HighV
Output VoltageV
Low(Max)
Output SinkV
CurrentV
Output LeakageV
CurrentV
Response TimeV
e
5V as shown in the Typical Connection diagram.
e
5V as shown in the Typical Connection diagram.
b
15VsV
s
g
s
R
R
V
R
C
(Note 7)
CM
13V(Min)
10VsV
S
g
15V(Min)
e %
, LP265
L
e
5V,
C
e
0V,4.94.54.94.5
E
e
100k
L
e
0V
E
e
0V,
E
e
0.4V(Min)
O
e
15V,
C
eb
15V(Max)
E
e
5V,
CC
e
0V,
E
e
5k,1.01.0ms
L
e
10 pF
L
a
may cause excessive heating and eventual destruction. The current in the output leads and the VElead should not be
857570807570
807070757070
2.83.54.3
0.40.40.40.4
1085.57.564
55050005505000
b
s
if V
(Vb)a7V.
E
e
e
T
25§C. V
A
j
e
A
a
e
T
25§C. V
j
ea
a
15V, V
jA
e
and Tjmax. T
5V, V
b
eb
b
e
0V, I
15V, I
SET
j
SET
e
a
T
A
e
10 mA, R
e
100 mA, R
ijAPD.
e
L
e
L
(Min)
mA
(Max)
(Min)
mA
100k, and
100k, and
nA
nA
V
V
dB
dB
V
V
nA
3
Typical Performance Characteristics
Supply Current vs Supply
Supply Current vs I
SET
Voltage
Supply Current vs
Temperature
Input Bias Current vs I
Response Time
Negative Transition
Response Time
Negative Transition
SET
Output Saturation VoltageVoltage Gain vs I
Response Time
Positive Transition
Response Time
Positive Transition
SET
TL/H/5023– 3
4
Typical Applications
Gated 4-Phase Oscillator
‘‘Voting’’ Comparator
TL/H/5023– 4
fe20 kHz
1
e
f
1.6#R
C
#
t
t
All four phases run when X is low. When X is high, oscillation stops and
power drain is zero.
5
e
If V
E
Choice of V
e
low; V
E
0.25V, then V
e
0.50V causes V
E
0.75V will cause V
will be low if 1 of the 3 other outputs are low.
OUT
to be low if 2 of the 3 other outputs are
OUT
to be low if all 3 other outputs are low.
OUT
TL/H/5023– 5
Typical Applications (Continued)
Ordinary Hysteresis
It is a good practice to add a few millivolts of positive feedback to prevent
oscillation when the input voltage is near the threshold.
TL/H/5023– 6
Bar-Graph Display
Hysteresis from Emitter
Positive feedback from the emitter can also prevent oscillations when VINis
near the threshold.
TL/H/5023– 7
Level-Sensitive Strobe
The positive feedback from pin 16 provides hysteresis.
TL/H/5023– 8
Comparators B, C, and D do not respond until activated by the signal applied
to comparator A.
6
TL/H/5023– 9
Typical Applications (Continued)
Slow Op Amp (Inverter)
Slow Op Amp (Unity-Gain Follower)
e
R
Va/20 mA
B
Unlike most comparators, the LP365 can be used as an op amp, if suitable
R-C damping networks are used.
TL/H/5023– 10
Chopping Outputs
e
R
Va/20 mA
B
The LP365 can also be used as a high-input-impedance follower-amplifier
with the damping components shown.
TL/H/5023– 11
Low Battery Detector
Chopping the outputs by modulating the I
mitted via opto-couplers, transformers, etc.
TL/H/5023– 12
current allows data to be trans-
SET
@
I
6Ve45 mA
S
@
I
3.8Ve1 mA
S
e
f
3 kHz
Comparator A detects when the supply voltage drops to 4V and enables
comparator B to drive a piezoelectric alarm.
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or2. A critical component is any component of a life
systems which, (a) are intended for surgical implantsupport device or system whose failure to perform can
into the body, or (b) support or sustain life, and whosebe reasonably expected to cause the failure of the life
failure to perform, when properly used in accordancesupport device or system, or to affect its safety or
with instructions for use provided in the labeling, caneffectiveness.
be reasonably expected to result in a significant injury
to the user.
National SemiconductorNational SemiconductorNational SemiconductorNational Semiconductor
CorporationEuropeHong Kong Ltd.Japan Ltd.
1111 West Bardin RoadFax: (
Arlington, TX 76017Email: cnjwge@tevm2.nsc.comOcean Centre, 5 Canton Rd.Fax: 81-043-299-2408
Tel: 1(800) 272-9959Deutsch Tel: (
Fax: 1(800) 737-7018English Tel: (
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.