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
designed 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 TTL and CMOS. When
operated from both plus and minus power supplies, they will
directly interface with MOS logic — where the low power
drain of the LM339 is a distinct advantage over standard
comparators.
Features
nWide supply voltage range
nLM139/139A Series 2 to 36 V
DC
or ±1to±18 V
DC
nLM2901: 2 to 36 V
DC
or ±1to±18 V
DC
nLM3302: 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
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
One-Shot Multivibrator with Input
Lock Out
00570612
March 2004
LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators
© 2004 National Semiconductor Corporation DS005706 www.national.com
Absolute Maximum Ratings (Note 10)
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 8) 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 3) 50 mA 50 mA
Power Dissipation (Note 1)
Molded DIP 1050 mW 1050 mW
Cavity DIP 1190 mW
Small Outline Package 760 mW
Output Short-Circuit to GND,
(Note 2) 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
+
=5 V
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 9) 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 5), 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
+
=28V
DC
) (Note 6)
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
+
=28V
DC
)
Voltage Gain R
L
≥15 kΩ,V
+
=15V
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
,
LM139/LM239/LM339/LM2901/LM3302
www.national.com 2
Electrical Characteristics (Continued)
(V
+
=5 V
DC
,T
A
= 25˚C, unless otherwise stated)
Parameter Conditions LM139A LM239A, LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
R
L
= 5.1 kΩ
Response Time V
RL
=5V
DC
,R
L
= 5.1 kΩ, 1.3 1.3 1.3 µs
(Note 7)
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 9) 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 5), 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
+
=30V
DC
(LM3302, 0 V
+
−1.5 0 V
+
−1.5 0 V
+
−1.5 V
DC
Voltage Range V
+
=28V
DC
) (Note 6)
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
+
=28V
DC
)
Voltage Gain R
L
≥15 kΩ,V
+
=15V
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 7)
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 4))
Parameter Conditions LM139A LM239A, LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 9) 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 5)
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
+
=28V
DC
) (Note 6)
LM139/LM239/LM339/LM2901/LM3302
www.national.com3
Electrical Characteristics (Continued)
(V
+
= 5.0 V
DC
, (Note 4))
Parameter Conditions LM139A LM239A, LM339A LM139 Units
Min Typ Max Min Typ Max Min Typ Max
Saturation Voltage V
IN(−)
=1 V
DC
,V
IN(+)
= 0, 700 700 700 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
=30V
DC
, (LM3302,
V
O
=28V
DC
)
Differential Input Voltage Keep all V
IN
’s ≥0V
DC
(or V
−
,363636V
DC
if used), (Note 8)
Electrical Characteristics
(V
+
= 5.0 V
DC
, (Note 4))
Parameter Conditions LM239, LM339 LM2901 LM3302 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 9) 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 5)
Input Common-Mode V
+
=30V
DC
(LM3302, V
+
=28V
DC
)V
+
−2.0 0 V
+
−2.0 0 V
+
−2.0 V
DC
Voltage Range (Note 6)
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
=30V
DC
, (LM3302, V
O
=28V
DC
)
Differential Input Voltage Keep all V
IN
’s ≥0V
DC
(or V
−
, 363628V
DC
if used), (Note 8)
Note 1: 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
(PD≤100 mW), provided the output transistors are allowed to saturate.
Note 2: 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 3: 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
transistors 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 4: 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 5: 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 6: 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 7: 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
characteristics section.
Note 8: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the
comparator 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 9: 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 10: Refer to RETS139AX for LM139A military specifications and to RETS139X for LM139 military specifications.
LM139/LM239/LM339/LM2901/LM3302
www.national.com 4
Typical Performance Characteristics LM139/LM239/LM339, LM139A/LM239A/LM339A, LM3302
Supply Current Input Current
00570634 00570635
Output Saturation Voltage
Response Time for Various Input Overdrives
— Negative Transition
00570636 00570637
Response Time for Various Input Overdrives
— Positive Transition
00570638
LM139/LM239/LM339/LM2901/LM3302
www.national.com5
Typical Performance Characteristics LM2901
Supply Current Input Current
00570639 00570640
Output Saturation Voltage
Response Time for Various Input Overdrives
— Negative Transition
00570641 00570642
Response Time for Various Input Overdrives
— Positive Transition
00570643
LM139/LM239/LM339/LM2901/LM3302
www.national.com 6
Application Hints
The LM139 series are high gain, wide bandwidth devices
which, like most comparators, can easily oscillate if the
output 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
finally, adding even a small amount (1 to 10 mV) of positive
feedback (hysteresis) causes such a rapid transition that
oscillations 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
waveform, 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
)
Basic Comparator
00570603
Driving CMOS
00570604
Driving TTL
00570605
AND Gate
00570608
OR Gate
00570609
LM139/LM239/LM339/LM2901/LM3302
www.national.com7
Typical Applications (V
+
=15V
DC
)
One-Shot Multivibrator
00570610
Bi-Stable Multivibrator
00570611
LM139/LM239/LM339/LM2901/LM3302
www.national.com 8
Typical Applications (V
+
=15V
DC
) (Continued)
One-Shot Multivibrator with Input Lock Out
00570612
Pulse Generator
00570617
LM139/LM239/LM339/LM2901/LM3302
www.national.com9
Typical Applications (V
+
=15
VDC) (Continued)
Large Fan-In AND Gate
00570613
ORing the Outputs
00570615
LM139/LM239/LM339/LM2901/LM3302
www.national.com 10
Typical Applications (V
+
=15V
DC
) (Continued)
Time Delay Generator
00570614
Non-Inverting Comparator with Hysteresis Inverting Comparator with Hysteresis
00570618
00570619
LM139/LM239/LM339/LM2901/LM3302
www.national.com11
Typical Applications (V
+
=15
VDC) (Continued)
Squarewave Oscillator
00570616
Basic Comparator
00570621
Limit Comparator
00570624
Comparing Input Voltages
of Opposite Polarity
00570620
Output Strobing
00570622
* Or open-collector logic gate without pull-up resistor
Crystal Controlled Oscillator
00570625
LM139/LM239/LM339/LM2901/LM3302
www.national.com 12
Typical Applications (V
+
=15V
DC
) (Continued)
Two-Decade High-Frequency VCO
00570623
V+= +30 VDC
250 mVDC ≤VC≤+50 VDC
700 Hz ≤fO≤100 kHz
LM139/LM239/LM339/LM2901/LM3302
www.national.com13
Typical Applications (V
+
=15
VDC) (Continued)
Transducer Amplifier
00570628
Zero Crossing Detector (Single Power Supply)
00570630
Split-Supply Applications (V
+
= +15
V
DC
and V
−
= −15 V
DC
)
MOS Clock Driver
00570631
LM139/LM239/LM339/LM2901/LM3302
www.national.com 14
Split-Supply Applications (V
+
= +15 V
DC
and V
−
= −15 V
DC
) (Continued)
Zero Crossing Detector
00570632
Comparator With a Negative Reference
00570633
Schematic Diagram
00570601
LM139/LM239/LM339/LM2901/LM3302
www.national.com15
Connection Diagrams
Dual-In-Line Package
00570602
Order Number LM139J, LM139J/883 (Note 11), LM139AJ,
LM139AJ/883 (Note 12), LM239J, LM239AJ, LM339J
See NS Package Number J14A
Order Number LM339AM, LM339AMX, LM339M, LM339MX or LM2901M
See NS Package Number M14A
Order Number LM339N, LM339AN, LM2901N or LM3302N
See NS Package Number N14A
00570627
Order Number LM139AW/883 or LM139W/883 (Note 11)
See NS Package Number W14B,
LM139AWGRQMLV (Note 13)
See NS Package Number WG14A
Note 11: Available per JM38510/11201
Note 12: Available per SMD# 5962-8873901
Note 13: See STD Mil Dwg 5962R96738 for Radiation Tolerant Device
LM139/LM239/LM339/LM2901/LM3302
www.national.com 16
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, LM339AMX, LM339M, LM339MX, LM2901M or LM2901MX
NS Package Number M14A
LM139/LM239/LM339/LM2901/LM3302
www.national.com17
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, LM139W/883
NS Package Number W14B
LM139/LM239/LM339/LM2901/LM3302
www.national.com 18
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Order Number LM139AWG/883, LM139WG/883
NS Package Number WG14A
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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.