LM139/LM239/LM339/LM2901/LM3302
Low Power Low Offset Voltage Quad Comparators
General Description
The LM139 series consists of four independent precision
voltage comparators with an offset voltage specification as
low as 2 mV max for all four comparators. These were de-
signed specifically to operate from a single power supply
over a wide range of voltages. Operation from split power
supplies is also possible and the low power supply current
drain is independent of the magnitude of the power supply
voltage. These comparators also have a unique characteris-
tic in that the input common-mode voltage range includes
ground, even though operated from a single power supply
voltage.
Application areas include limit comparators, simple analog to
digital converters; pulse, squarewave and time delay gen-
erators; wide range VCO; MOS clock timers; multivibrators
and high voltage digital logic gates. The LM139 series was
designed to directly interface with TTLand CMOS. When op-
erated from both plus and minus power supplies, they will di-
rectly interface with MOS logic— where the low power drain
of the LM339 is a distinct advantage over standard compara-
tors.
Advantages
nHigh precision comparators
nReduced V
OS
drift over temperature
nEliminates need for dual supplies
nAllows sensing near GND
nCompatible with all forms of logic
nPower drain suitable for battery operation
Features
nWide supply voltage range
— LM139/139A Series 2 to 36 V
DC
or ±1to±
18 V
DC
— LM2901: 2 to 36 V
DC
or ±1to±
18 V
DC
— LM3302: 2 to 28 V
DC
or ±1to±
14 V
DC
nVery low supply current drain (0.8 mA) — independent
of supply voltage
nLow input biasing current: 25 nA
nLow input offset current: ±5nA
nOffset voltage: ±3mV
nInput common-mode voltage range includes GND
nDifferential input voltage range equal to the power
supply voltage
nLow output saturation voltage: 250 mV at 4 mA
nOutput voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
Connection Diagrams
DS005706-27
Order Number LM139AW/883 or LM139W/883 (Note 1)
LM139AWRQML and LM139AWRQMLV(Note 3)
See NS Package Number W14B
LM139AWGRQML and LM139AWGRQMLV(Note 3)
See NS Package Number WG14A
November 1999
LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators
© 1999 National Semiconductor Corporation DS005706 www.national.com
Connection Diagrams (Continued)
Note 1: Available per JM38510/11201
Note 2: Available per SMD#5962-8873901
Note 3: See STD Mil Dwg 5962R96738 for Radiation Tolerant Device
Dual-In-Line Package
DS005706-2
Order Number LM139J, LM139J/883 (Note 1), LM139AJ,
LM139AJ/883 (Note 2), LM239J, LM239AJ, LM339J,
LM139AJRQML and LM139AJRQMLV(Note 3)
See NS Package Number J14A
Order Number LM339AM, LM339M or LM2901M
See NS Package Number M14A
Order Number LM339N, LM339AN, LM2901N or LM3302N
See NS Package Number N14A
LM139/LM239/LM339/LM2901/LM3302
www.national.com 2
Absolute Maximum Ratings (Note 13)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM139/LM239/LM339
LM139A/LM239A/LM339A LM3302
LM2901
Supply Voltage, V
+
36 V
DC
or ±18 V
DC
28 V
DC
or ±14 V
DC
Differential Input Voltage (Note 11) 36 V
DC
28 V
DC
Input Voltage −0.3 V
DC
to +36 V
DC
−0.3 V
DC
to +28 V
DC
Input Current (V
IN
<−0.3 V
DC
),
(Note 6) 50 mA 50 mA
Power Dissipation (Note 4)
Molded DIP 1050 mW 1050 mW
Cavity DIP 1190 mW
Small Outline Package 760 mW
Output Short-Circuit to GND,
(Note 5) Continuous Continuous
Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C
Lead Temperature
(Soldering, 10 seconds) 260˚C 260˚C
Operating Temperature Range −40˚C to +85˚C
LM339/LM339A 0˚C to +70˚C
LM239/LM239A −25˚C to +85˚C
LM2901 −40˚C to +85˚C
LM139/LM139A −55˚C to +125˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds) 260˚C 260˚C
Small Outline Package
Vapor Phase (60 seconds) 215˚C 215˚C
Infrared (15 seconds) 220˚C 220˚C
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount
devices.
ESD rating (1.5 kΩin series with 100 pF) 600V 600V
Electrical Characteristics
(V
+
=5V
DC
,T
A
=25˚C, unless otherwise stated)
Parameter Conditions LM139A LM239A, LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 12) 1.0 2.0 1.0 2.0 2.0 5.0 mV
DC
Input Bias Current I
IN(+)
or I
IN(−)
with Output in 25 100 25 250 25 100 nA
DC
Linear Range, (Note 8), V
CM
=0V
Input Offset Current I
IN(+)
−I
IN(−)
,V
CM
=0V 3.0 25 5.0 50 3.0 25 nA
DC
Input Common-Mode V
+
=30 V
DC
(LM3302, 0 V
+
−1.5 0 V
+
−1.5 0 V
+
−1.5 V
DC
Voltage Range V
+
=28 V
DC
) (Note 9)
Supply Current R
L
=∞on all Comparators, 0.8 2.0 0.8 2.0 0.8 2.0 mA
DC
R
L
=∞,V
+
=
36V, 1.0 2.5 1.0 2.5 mA
DC
(LM3302, V
+
=28 V
DC
)
Voltage Gain R
L
≥15 kΩ,V
+
=
15 V
DC
50 200 50 200 50 200 V/mV
V
o
=1V
DC
to 11 V
DC
Large Signal V
IN
=TTL Logic Swing, V
REF
=300 300 300 ns
Response Time 1.4 V
DC
,V
RL
=5V
DC
,
R
L
=5.1 kΩ
Response Time V
RL
=5V
DC
,R
L
=
5.1 kΩ, 1.3 1.3 1.3 µs
(Note 10)
LM139/LM239/LM339/LM2901/LM3302
www.national.com3
Electrical Characteristics (Continued)
(V
+
=5V
DC
,T
A
=25˚C, unless otherwise stated)
Parameter Conditions LM139A LM239A, LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
Output Sink Current V
IN(−)
=1V
DC
,V
IN(+)
=0, 6.0 16 6.0 16 6.0 16 mA
DC
V
O
≤1.5 V
DC
Saturation Voltage V
IN(−)
=1V
DC
,V
IN(+)
=0, 250 400 250 400 250 400 mV
DC
I
SINK
≤4mA
Output Leakage V
IN(+)
=1V
DC
,V
IN(−)
=0, 0.1 0.1 0.1 nA
DC
Current V
O
=5V
DC
Electrical Characteristics
(V
+
=5V
DC
,T
A
=25˚C, unless otherwise stated)
Parameter Conditions LM239, LM339 LM2901 LM3302 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 12) 2.0 5.0 2.0 7.0 3 20 mV
DC
Input Bias Current I
IN(+)
or I
IN(−)
with Output in 25 250 25 250 25 500 nA
DC
Linear Range, (Note 8), V
CM
=0V
Input Offset Current I
IN(+)
−I
IN(−)
,V
CM
=0V 5.0 50 5 50 3 100 nA
DC
Input Common-Mode V
+
=30 V
DC
(LM3302, 0 V
+
−1.5 0 V
+
−1.5 0 V
+
−1.5 V
DC
Voltage Range V
+
=28 V
DC
) (Note 9)
Supply Current R
L
=∞on all Comparators, 0.8 2.0 0.8 2.0 0.8 2.0 mA
DC
R
L
=∞,V
+
=
36V, 1.0 2.5 1.0 2.5 1.0 2.5 mA
DC
(LM3302, V
+
=28 V
DC
)
Voltage Gain R
L
≥15 kΩ,V
+
=
15 V
DC
50 200 25 100 2 30 V/mV
V
o
=1V
DC
to 11 V
DC
Large Signal V
IN
=TTL Logic Swing, V
REF
=300 300 300 ns
Response Time 1.4 V
DC
,V
RL
=5V
DC
,
R
L
=5.1 kΩ,
Response Time V
RL
=5V
DC
,R
L
=
5.1 kΩ, 1.3 1.3 1.3 µs
(Note 10)
Output Sink Current V
IN(−)
=1V
DC
,V
IN(+)
=0, 6.0 16 6.0 16 6.0 16 mA
DC
V
O
≤1.5 V
DC
Saturation Voltage V
IN(−)
=1V
DC
,V
IN(+)
=0, 250 400 250 400 250 500 mV
DC
I
SINK
≤4mA
Output Leakage V
IN(+)
=1V
DC
,V
IN(−)
=0, 0.1 0.1 0.1 nA
DC
Current V
O
=5V
DC
Electrical Characteristics
(V
+
=5.0 V
DC
, (Note 7))
Parameter Conditions LM139A LM239A,
LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 12) 4.0 4.0 9.0 mV
DC
Input Offset Current I
IN(+)
−I
IN(−)
,V
CM
=0V 100 150 100 nA
DC
Input Bias Current I
IN(+)
or I
IN(−)
with Output in 300 400 300 nA
DC
Linear Range, V
CM
=0V (Note 8)
Input Common-Mode V
+
=30 V
DC
(LM3302, 0 V
+
−2.0 0 V
+
−2.0 0 V
+
−2.0 V
DC
Voltage Range V
+
=28 V
DC
) (Note 9)
Saturation Voltage V
IN(−)
=1V
DC
,V
IN(+)
=0, 700 700 700 mV
DC
I
SINK
≤4mA
LM139/LM239/LM339/LM2901/LM3302
www.national.com 4
Electrical Characteristics (Continued)
(V
+
=5.0 V
DC
, (Note 7))
Parameter Conditions LM139A LM239A,
LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
Output Leakage Current V
IN(+)=
1V
DC
,V
IN(−)
=0, 1.0 1.0 1.0 µA
DC
V
O
=30 V
DC
, (LM3302,
V
O
=28 V
DC
)
Differential Input Voltage Keep all V
IN
’s≥0V
DC
(or V
−
,363636V
DC
if used), (Note 11)
Electrical Characteristics
(V
+
=5.0 V
DC
, (Note 7))
Parameter Conditions LM239, LM339 LM2901 LM3302 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 12) 9.0 9 15 40 mV
DC
Input Offset Current I
IN(+)
−I
IN(−)
,V
CM
=0V 150 50 200 300 nA
DC
Input Bias Current I
IN(+)
or I
IN(−)
with Output in 400 200 500 1000 nA
DC
Linear Range, V
CM
=0V (Note
8)
Input Common-Mode V
+
=30 V
DC
(LM3302, V
+
=28
V
DC
)V
+
−2.0 0 V
+
−2.0 0 V
+
−2.0 V
DC
Voltage Range (Note 9)
Saturation Voltage V
IN(−)
=1V
DC
,V
IN(+)
=0, 700 400 700 700 mV
DC
I
SINK
≤4mA
Output Leakage Current V
IN(+)=
1V
DC
,V
IN(−)
=0, 1.0 1.0 1.0 µA
DC
V
O
=30 V
DC
, (LM3302, V
O
=28
V
DC
)
Differential Input Voltage Keep all V
IN
’s≥0V
DC
(or V
−
,363628V
DC
if used), (Note 11)
Note 4: For operating at high temperatures, the LM339/LM339A, LM2901, LM3302 must be derated based on a 125˚C maximum junction temperature and a thermal
resistance of 95˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The LM239 and LM139 must be derated based
on a 150˚C maximum junction temperature. The low bias dissipation and the “ON-OFF” characteristic of the outputs keeps the chip dissipation very small(P
D
≤100
mW), provided the output transistors are allowed to saturate.
Note 5: Short circuits from the output to V+can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output
current is approximately 20 mA independent of the magnitude of V+.
Note 6: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP tran-
sistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the
IC chip. This transistor action can cause the output voltages of the comparators to go to the V+voltage level (or to ground for a large overdrive) for the time duration
that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value
greater than −0.3 VDC (at 25˚)C.
Note 7: These specifications are limited to −55˚C≤TA≤+125˚C, for the LM139/LM139A. With the LM239/LM239A, all temperature specifications are limited to
−25˚C≤TA≤+85˚C, the LM339/LM339A temperature specifications are limited to 0˚C≤TA≤+70˚C, and the LM2901, LM3302 temperature range is −40˚C≤TA≤+85˚C.
Note 8: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the outputso
no loading change exists on the reference or input lines.
Note 9: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode
voltage range is V+−1.5V at 25˚C, but either or both inputs can go to +30 VDC without damage (25V for LM3302), independent of the magnitude of V+.
Note 10: The response time specified is a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained, see typical performance char-
acteristics section.
Note 11: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the com-
parator will provide a proper output state. The low input voltage state must not be less than −0.3 VDC (or 0.3 VDCbelow the magnitude of the negative power supply,
if used) (at 25˚C).
Note 12: At output switch point, VO≅1.4 VDC,R
S
=
0Ωwith V+from 5 VDC to 30 VDC; and over the full input common-mode range (0 VDC to V+−1.5 VDC), at 25˚C.
For LM3302, V+from 5 VDC to 28 VDC.
Note 13: Refer to RETS139AX for LM139A military specifications and to RETS139X for LM139 military specifications.
LM139/LM239/LM339/LM2901/LM3302
www.national.com5
Typical Performance Characteristics LM139/LM239/LM339, LM139A/LM239A/LM339A, LM3302
Typical Performance Characteristics LM2901
Supply Current
DS005706-34
Input Current
DS005706-35
Output Saturation Voltage
DS005706-36
Response Time for Various
Input Overdrives— Negative
Transition
DS005706-37
Response Time for Various
Input Overdrives— Positive
Transition
DS005706-38
Supply Current
DS005706-39
Input Current
DS005706-40
Output Saturation Voltage
DS005706-41
LM139/LM239/LM339/LM2901/LM3302
www.national.com 6
Typical Performance Characteristics LM2901 (Continued)
Application Hints
The LM139 series are high gain, wide bandwidth devices
which, like most comparators, can easily oscillate if the out-
put lead is inadvertently allowed to capacitively couple to the
inputs via stray capacitance. This shows up only during the
output voltage transition intervals as the comparator
changes states. Power supply bypassing is not required to
solve this problem. Standard PC board layout is helpful as it
reduces stray input-output coupling. Reducing this input re-
sistors to <10 kΩreduces the feedback signal levels and fi-
nally, adding even a small amount (1 to 10 mV) of positive
feedback (hysteresis) causes such a rapid transition that os-
cillations due to stray feedback are not possible. Simply
socketing the IC and attaching resistors to the pins will cause
input-output oscillations during the small transition intervals
unless hysteresis is used. If the input signal is a pulse wave-
form, with relatively fast rise and fall times, hysteresis is not
required.
All pins of any unused comparators should be tied to the
negative supply.
The bias network of the LM139 series establishes a drain
current which is independent of the magnitude of the power
supply voltage over the range of from 2 V
DC
to 30 V
DC
.
It is usually unnecessary to use a bypass capacitor across
the power supply line.
The differential input voltage may be larger than V
+
without
damaging the device. Protection should be provided to pre-
vent the input voltages from going negative more than −0.3
V
DC
(at 25˚C). An input clamp diode can be used as shown
in the applications section.
The output of the LM139 series is the uncommitted collector
of a grounded-emitter NPN output transistor. Many collectors
can be tied together to provide an output OR’ing function.An
output pull-up resistor can be connected to any available
power supply voltage within the permitted supply voltage
range and there is no restriction on this voltage due to the
magnitude of the voltage which is applied to the V
+
terminal
of the LM139A package. The output can also be used as a
simple SPST switch to ground (when a pull-up resistor is not
used). The amount of current which the output device can
sink is limited by the drive available (which is independent of
V
+
) and the βof this device. When the maximum current limit
is reached (approximately 16 mA), the output transistor will
come out of saturation and the output voltage will rise very
rapidly. The output saturation voltage is limited by the ap-
proximately 60ΩR
SAT
of the output transistor. The low offset
voltage of the output transistor (1 mV) allows the output to
clamp essentially to ground level for small load currents.
Typical Applications (V
+
=5.0 V
DC
)
Response Time for Various
Input Overdrives— Negative
Transition
DS005706-42
Response Time for Various
Input Overdrives-Positive
Transition
DS005706-43
Basic Comparator
DS005706-3
Driving CMOS
DS005706-4
Driving TTL
DS005706-5
LM139/LM239/LM339/LM2901/LM3302
www.national.com7
Typical Applications (V
+
=5.0 V
DC
) (Continued)
Typical Applications (V
+
=15 V
DC
)
AND Gate
DS005706-8
OR Gate
DS005706-9
One-Shot Multivibrator
DS005706-10
Bi-Stable Multivibrator
DS005706-11
LM139/LM239/LM339/LM2901/LM3302
www.national.com 8
Typical Applications (V
+
=15 V
DC
) (Continued)
One-Shot Multivibrator with Input Lock Out
DS005706-12
LM139/LM239/LM339/LM2901/LM3302
www.national.com9
Typical Applications (V
+
=15 V
DC
) (Continued)
Large Fan-In AND Gate
DS005706-13
ORing the Outputs
DS005706-15
LM139/LM239/LM339/LM2901/LM3302
www.national.com 10
Typical Applications (V
+
=15 V
DC
) (Continued)
Pulse Generator
DS005706-17
LM139/LM239/LM339/LM2901/LM3302
www.national.com11
Typical Applications (V
+
=15 V
DC
) (Continued)
Time Delay Generator
DS005706-14
Non-Inverting Comparator with Hysteresis
DS005706-18
Inverting Comparator with Hysteresis
DS005706-19
LM139/LM239/LM339/LM2901/LM3302
www.national.com 12
Typical Applications (V
+
=15 V
DC
) (Continued)
Squarewave Oscillator
DS005706-16
Basic Comparator
DS005706-21
Limit Comparator
DS005706-24
Comparing Input Voltages
of Opposite Polarity
DS005706-20
LM139/LM239/LM339/LM2901/LM3302
www.national.com13
Typical Applications (V
+
=15 V
DC
) (Continued)
Output Strobing
DS005706-22
* Or open-collector logic gate without pull-up resistor
Crystal Controlled Oscillator
DS005706-25
LM139/LM239/LM339/LM2901/LM3302
www.national.com 14
Typical Applications (V
+
=15 V
DC
) (Continued)
Two-Decade High-Frequency VCO
DS005706-23
V+=+30 VDC
250 mVDC≤VC≤+50 VDC
700 Hz≤fo≤100 kHz
LM139/LM239/LM339/LM2901/LM3302
www.national.com15
Typical Applications (V
+
=15 V
DC
) (Continued)
Split-Supply Applications (V
+
=+15 V
DC
and V
−
=−15 V
DC
)
Transducer Amplifier
DS005706-28
Zero Crossing Detector (Single Power Supply)
DS005706-30
MOS Clock Driver
DS005706-31
LM139/LM239/LM339/LM2901/LM3302
www.national.com 16
Split-Supply Applications (V
+
=+15 V
DC
and V
−
=−15 V
DC
) (Continued)
Schematic Diagram
Zero Crossing Detector
DS005706-32
Comparator With a Negative
Reference
DS005706-33
DS005706-1
LM139/LM239/LM339/LM2901/LM3302
www.national.com17
Physical Dimensions inches (millimeters) unless otherwise noted
Ceramic Dual-In-Line Package (J)
Order Number LM139J, LM139J/883, LM139AJ,
LM139AJ/883, LM239J, LM239AJ, LM339J
NS Package Number J14A
S.O. Package (M)
Order Number LM339AM, LM339M or LM2901M
NS Package Number M14A
LM139/LM239/LM339/LM2901/LM3302
www.national.com 18
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (N)
Order Number LM339N, LM339AN, LM2901N or LM3302N
NS Package Number N14A
Order Number LM139AW/883 or LM139W/883
NS Package Number W14B
LM139/LM239/LM339/LM2901/LM3302
www.national.com19
Notes
LIFE SUPPORT POLICY
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 AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
National Semiconductor
Europe Fax: +49 (0) 1 80-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 1 80-530 85 85
English Tel: +49 (0) 1 80-532 78 32
Français Tel: +49 (0) 1 80-532 93 58
Italiano Tel: +49 (0) 1 80-534 16 80
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: sea.support@nsc.com
National Semiconductor
Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
www.national.com
LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators
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.
