LM139/LM239/LM339/LM2901/LM3302
Low Power Low Offset Voltage Quad Comparators
LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators
August 2000
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 aunique
characteristic in that the input common-mode voltage range
includes ground, even though operated from a single power
supply voltage.
Application areas include limitcomparators,simpleanalogto
digital converters; pulse, squarewave and time delay
generators; 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
n Wide supply voltage range
n LM139/139A Series2 to 36 V
n LM2901:2 to 36 V
n LM3302:2 to 28 V
n Very low supply current drain (0.8 mA) — independent
of supply voltage
n Low input biasing current:25 nA
n Low input offset current:
n Offset voltage:
n Input common-mode voltage range includes GND
n Differential input voltage range equal to the power
supply voltage
n Low output saturation voltage:250 mV at 4 mA
n Output voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
DC
DC
or±1to±18 V
DC
or±1to±18 V
or±1to±14 V
±
5nA
±
3mV
DC
DC
DC
Advantages
n High precision comparators
n Reduced V
n Eliminates need for dual supplies
n Allows sensing near GND
n Compatible with all forms of logic
n Power drain suitable for battery operation
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
LM139/LM239/LM339
LM139A/LM239A/LM339ALM3302
Supply Voltage, V
+
Differential Input Voltage (Note 8)36 V
Input Voltage−0.3 VDCto +36 V
Input Current (V
<
−0.3 VDC),
IN
(Note 3)50 mA50 mA
Power Dissipation (Note 1)
Molded DIP1050 mW1050 mW
LM139/LM239/LM339/LM2901/LM3302
Cavity DIP1190 mW
Small Outline Package760 mW
Output Short-Circuit to GND,
(Note 2)ContinuousContinuous
Storage Temperature Range−65˚C to +150˚C−65˚C to +150˚C
Lead Temperature
(Soldering, 10 seconds)260˚C260˚C
Operating Temperature Range−40˚C to +85˚C
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 resistanceof 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
≤100 mW), provided the output transistors are allowed to saturate.
(P
D
Note 2: Short circuits from the output to V
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
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 V
Note 4: These specifications are limited to −55˚C≤T
≤+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.
−25˚C≤T
A
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.Theupperend of the common-mode
voltage range is 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 V
supply, if used) (at 25˚C).
Note 9: At output switch point, V
For LM3302, V
Note 10: Refer to RETS139AX for LM139A military specifications and to RETS139X for LM139 military specifications.
+
−1.5V at 25˚C, but either or both inputs can go to +30 VDCwithout damage (25V for LM3302), independent of the magnitude of V+.
+
from 5 VDCto 28 VDC.
(at 25˚)C.
DC
.1.4 VDC,RS=0Ωwith V+from 5 VDCto 30 VDC; and over the full input common-mode range (0 VDCto V+−1.5 VDC), at 25˚C.
O
=0V15050200300nA
with Output in4002005001000nA
IN(−)
+
V
−2.00V+−2.00V+−2.0V
=0,700400700700mV
IN(+)
=0,1.01.01.0µA
’s≥0VDC(or V−,363628V
IN
+
can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output
≤+125˚C, for the LM139/LM139A. With the LM239/LM239A, all temperature specifications are limited to
A
+
.
+
voltage level (or to ground for a large overdrive) for the time
(or 0.3 VDCbelow the magnitude of the negative power
Response Time for Various
Input Overdrives—Negative
Transition
LM139/LM239/LM339/LM2901/LM3302
DS005706-42
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
resistors to
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
It is usually unnecessary to use a bypass capacitor across
the power supply line.
Typical Applications (V
<
10 kΩ reduces the feedback signal levels and
to 30 VDC.
DC
+
= 5.0 VDC)
Response Time for Various
Input Overdrives-Positive
Transition
DS005706-43
The differential input voltage may be larger than V
damaging the device. Protection should be provided to
prevent the input voltages from going negative more than
−0.3 V
(at 25˚C). An input clamp diode can be used as
DC
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
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 β of 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
approximately 60Ω R
of the output transistor. The low
SAT
offset voltage of the output transistor (1 mV) allows the
output to clamp essentially to ground level for small load
currents.
+
without
+
terminal
Basic Comparator
DS005706-3
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Driving CMOS
DS005706-4
Driving TTL
DS005706-5
Page 7
Typical Applications (V
+
= 5.0 VDC) (Continued)
LM139/LM239/LM339/LM2901/LM3302
AND Gate
Typical Applications (V
+
=15VDC)
DS005706-8
One-Shot Multivibrator
OR Gate
DS005706-9
Bi-Stable Multivibrator
DS005706-10
DS005706-11
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Typical Applications (V
+
=15VDC) (Continued)
One-Shot Multivibrator with Input Lock Out
LM139/LM239/LM339/LM2901/LM3302
DS005706-12
Pulse Generator
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DS005706-17
Page 9
Typical Applications (V
+
=15VDC) (Continued)
LM139/LM239/LM339/LM2901/LM3302
Large Fan-In AND Gate
ORing the Outputs
DS005706-13
DS005706-15
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Page 10
Typical Applications (V
+
=15VDC) (Continued)
LM139/LM239/LM339/LM2901/LM3302
Time Delay Generator
Non-Inverting Comparator with Hysteresis
DS005706-18
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DS005706-14
Inverting Comparator with Hysteresis
DS005706-19
Page 11
Typical Applications (V
+
=15VDC) (Continued)
LM139/LM239/LM339/LM2901/LM3302
Squarewave Oscillator
Limit Comparator
Basic Comparator
DS005706-21
DS005706-16
Comparing Input Voltages
of Opposite Polarity
DS005706-24
DS005706-20
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Typical Applications (V
+
=15VDC) (Continued)
Output Strobing
LM139/LM239/LM339/LM2901/LM3302
* Or open-collector logic gate without pull-up resistor
DS005706-22
Crystal Controlled Oscillator
DS005706-25
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Typical Applications (V
+
=15VDC) (Continued)
LM139/LM239/LM339/LM2901/LM3302
DS005706-23
Two-Decade High-Frequency VCO
DC
≤+50 V
C
≤V
DC
≤100 kHz
o
DC
=+30 V
+
V
250 mV
700 Hz≤f
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Page 14
Typical Applications (V
+
=15VDC) (Continued)
Transducer Amplifier
LM139/LM239/LM339/LM2901/LM3302
Split-Supply Applications (V
Zero Crossing Detector (Single Power Supply)
DS005706-28
+
=+15 VDCand V−=−15 VDC)
MOS Clock Driver
DS005706-30
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DS005706-31
Page 15
Split-Supply Applications (V
+
=+15 VDCand V−=−15 VDC) (Continued)
LM139/LM239/LM339/LM2901/LM3302
Zero Crossing Detector
Schematic Diagram
Comparator With a Negative
Reference
DS005706-32
DS005706-33
DS005706-1
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Connection Diagrams
LM139/LM239/LM339/LM2901/LM3302
Order Number LM139J, LM139J/883 (Note 11), LM139AJ,
LM139AJ/883 (Note 12), LM239J, LM239AJ, LM339J
Order Number LM339AM, LM339AMX, LM339M, LM339MX or LM2901M
Order Number LM339N, LM339AN, LM2901N or LM3302N
Dual-In-Line Package
DS005706-2
See NS Package Number J14A
See NS Package Number M14A
See NS Package Number N14A
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
Note 13: See STD Mil Dwg 5962R96738 for Radiation Tolerant Device
Order Number LM139AW/883, LM139W/883, LM139AWG/883 or LM139WG/883
NS Package Number W14B
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Page 19
Notes
LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators
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
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.
labeling, can be reasonably expected to result in a
significant injury to the user.
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.