LM339 Quad Voltage Comparator
QUAD VOLTAGE COMPARATORS
These comparators are designed for use in level detection, lowlevel sensing and memory
applications in consumer automotive and industrial electronic applications.
FEATURES
l Single or dual supplies
l Low Input Bias Current - 25nA(Typ)
l Low Input Offset Voltage - +1.0mV(Typ)
l Low Input Offset Current - +5.0nA(Typ)
l Input common-mode voltage range to GND
l Output Compatible with TTL, MOS,
and CMOS
l Low output saturation voltage - 130mV(Typ)
@ 4.0mA
PIN ARRANGEMENT
14 SOP LM339CS
14 DIP LM339CD
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage
V
CC
+36 or +18
V
Input Differential Voltage Range
V
IDR
36
V
Input Common Mode Voltage Range
V
ICR
-0.3 to +36
V
Output Short Circuit-to-Ground
I
SC
Continuous
mA
Power Dissipation @ 25
o
C
P
D
1.0
W
Derate above 25
o
C
8.0
mW/
o
C
Operating Ambient Temperature Range
T
A
0 to 70
o
C
Storage Temperature Range
T
S
-65 to 150
o
C
Item
Symbol
Rating
Unit
Notes: 1. The max. output current may be as high as 20 mA, independent of the magnitude of V
CC
, output short circuits to
V
CC
can cause excessive heating and eventual destruction.
2. This magnitude of input current will only occur if the leads are driven more negative than ground or the negative
supply voltage. This is due to the input PNP collector base junction becooming forward biased, acting as an input
clamp diode. There is also a lateral PNP parasitic transistor action which can cause the output voltage of the
comparators to go to the V
CC
voltage level (or ground if overdrive is large) during the time that an input is driven
negative. This will not destroy the device when limited to the max rating and normal output states will recover
when inputs become > ground or negative supply.
3. At output switch point, V
O
=
1.4 Vdc, R
S
= 100
with V
CC
from 5.0 Vdc to 30 Vdc, and over the full input
common mode range (0V to V
CC
= 1.5V).
4. Due to the PNP transistor inputs, bias current will flow out of the inputs. This current is essentially constant,
independent of the output state, therefore, no loading changes will exist on the input lines.
5. Response time is specified with a 100mV step and 5.0mV of overdrive. For larger signals, 300ns is typical.
6. Positive excursions of input voltage may exceed the power supply level. As long as one of the inputs remain within
the common-mode range, the comparator will provide the proper output state.
5-3
LM339 Quad Voltage Comparator
ELECTRICAL CHARACTERISTICS
V
CC
= 5.0Vdc, 0
o
C < T
A
< 25
o
C (unless otherwise noted)
Item
Symbol
Min
Typ
Max
Unit
Input Offset Voltage (3)
V
IO
mV
T
A
= 25
o
C
---
+2.0
+5.0
T
A
= 0
o
C to 70
o
C
---
---
+9.0
Input Bias Current (3,4)
I
IB
nA
T
A
= 25
o
C
---
25
250
T
A
= 0
o
C to 70
o
C
---
---
400
Input Offset Current (3)
I
IO
nA
T
A
= 25
o
C
---
+50
+50
T
A
= 0
o
C to 70
o
C
---
---
+150
Input Common Mode Voltage Range (6)
V
ICR
V
T
A
= 25
o
C
0
---
V
CC
-1.5
T
A
= 0
o
C to 70
o
C
0
---
V
CC
-2.0
Supply Current
I
CC
mA
R
L
= , T
A
= 25
o
C
---
0.8
2.0
R
L
= , V
CC
= 30Vdc
---
---
---
Voltage Gain
A
VOL
---
200
---
V/mV
R
L
> 15K, V
CC
= 15 Vdc
Large Signal Response Time
---
---
300
---
ns
V1 = TTL Logic Swing.
Vref = 1.4 Vdc
VRL = 5.0 Vdc, RL = 5.1K
Response Time (6)
t
TLH
---
13
---
s
VRL = 5.0 Vdc, RL = 5.1K
Output Sink Current
I
Sink
6.0
16
---
mA
V1(-) > 1.0 Vdc, V1(+) = 0 Vdc
Vo < 1.5 Vdc
Saturation Voltage
V
SAT
mV
V1(-) > 1.0 Vdc, V1(+) = 0 Vdc
---
130
400
I
Sink
< 4.0 mA, T
A
= 25
o
C
0
o
C < T
A
< 70
o
C
---
---
700
Output Leakage Current
I
OL
nA
V1(-) = 0 Vdc, V1(+) > 1.0 Vdc
---
0.1
---
Vo = 5.0 Vdc, T
A
= 25
o
C
V1(-) = 0 Vdc, V1(+) > 1.0 Vdc
---
---
1000
Vo = 30 Vdc, 0
o
C < T
A
< 70
o
C
Input Differential Voltage (6)
V
ID
---
---
V
CC
V
All Vin > GND or V-Supply
0
o
C < T
A
< 70
o
C
8
8
5-4
LM339 Quad Voltage Comparator
These dual comparators feature high gain, wide bandwidth characteristics. This gives the device oscillation tendencies if
the outputs are capacitively coupled to the inputs via stray capacitance. This oscillation manifests itself during output
transitions (V
OL
to V
OH
). To alleviate this situation, input resistors <10 k
should be used.
The addition of positive feedback (< 10 mV) is also recommended. It is good design practice to ground all unused pins.
Differential input voltages may be larger than supply voltage without damaging the comparator's inputs. Voltages more
negative than 0.3 V should not be used.
APPLICATIONS INFORMATION
Zero Crossing Detector
(Single Supply)
Zero Crossing Detector
(Split Supply)
Square Wave Oscillator
Driving Logic
Inverting Comparator With Hysteresis
Non-Inverting Comparator With Hysteresis
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