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LM211, LM311
Single Comparators
The ability to operate from a single power supply of 5.0 V to 30 V or
$15
V split supplies, as commonly used with operational amplifiers,
makes the LM211/LM311 a truly versatile comparator. Moreover, the
inputs of the device can be isolated from system ground while the
output can drive loads referenced either to ground, the V
CC
or the V
EE
supply. This flexibility makes it possible to drive DTL, RTL, TTL, or
MOS logic. The output can also switch voltages to 50 V at currents to
50 mA, therefore, the LM211/LM311 can be used to drive relays,
lamps or solenoids.
Features
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MARKING
DIAGRAMS
8
PDIP−8
N SUFFIX
CASE 626
1
1
LM311AN
AWL
YYWWG
•
Pb−Free Packages are Available
8
3.0 k
V
CC
V
CC
5.0 k
5
2
R
L
6
8 7
Output
1
Inputs
2
+
3
V
EE
−
4
8
7
1
R
L
Output
8
1
8
SOIC−8
D SUFFIX
CASE 751
1
LMx11
ALYW
G
+
−
Inputs
3
4
V
EE
Split Power Supply with Offset Balance
Single Supply
V
CC
2
Inputs 3
V
CC
2
7
Inputs
Output
3
+
−
4
V
EE
8
1
+
−
4
8
7
1
R
L
Output
x
A
WL, L
YY, Y
WW, W
G
G
= 2 or 3
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
= Pb−Free Package
R
L
PIN CONNECTIONS
GND
Inputs
3
1
2
8
Input polarity is reversed when
GND pin is used as an output.
Ground−Referred Load
V
EE
Input polarity is reversed when
GND pin is used as an output.
Load Referred to Negative Supply
V
CC
Output
Balance/Strobe
Balance
+
−
7
6
5
V
EE
V
CC
2
V
CC
2
Inputs
3
4
V
EE
Load Referred to Positive Supply
Strobe Capability
Inputs
7
1
1.0 k
R
L
Output
3
4
(Top View)
8
7
Output
1
6
TTL Strobe
R
L
+
−
4
+
−
8
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
V
EE
Figure 1. Typical Comparator Design Configurations
©
Semiconductor Components Industries, LLC, 2005
1
July, 2005 − Rev. 5
Publication Order Number:
LM211/D
LM211, LM311
ORDERING INFORMATION
Device
LM211D
LM211DG
LM211DR2
LM211DR2G
LM311D
LM311DG
LM311DR2
LM311DR2G
LM311N
LM311NG
Package
SOIC−8
SOIC−8
(Pb−Free)
SOIC−8
SOIC−8
(Pb−Free)
SOIC−8
SOIC−8
(Pb−Free)
SOIC−8
SOIC−8
(Pb−Free)
PDIP−8
PDIP−8
(Pb−Free)
Shipping
†
98 Units / Rail
98 Units / Rail
2500 Units / Tape & Reel
2500 Units / Tape & Reel
98 Units / Rail
98 Units / Rail
2500 Units / Tape & Reel
2500 Units / Tape & Reel
50 Units / Rail
50 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MAXIMUM RATINGS
(T
A
= +25°C, unless otherwise noted.)
Rating
Total Supply Voltage
Output to Negative Supply Voltage
Ground to Negative Supply Voltage
Input Differential Voltage
Input Voltage (Note 2)
Voltage at Strobe Pin
Power Dissipation and Thermal Characteristics
Plastic DIP
Derate Above T
A
= +25°C
Operating Ambient Temperature Range
Operating Junction Temperature
Storage Temperature Range
Symbol
V
CC
+⎥V
EE
⎥
V
O
−V
EE
V
EE
V
ID
V
in
−
P
D
R
qJA
T
A
T
J(max)
T
stg
−25 to +85
+150
−65 to +150
LM211
36
50
30
±30
±15
V
CC
to V
CC
−5
625
5.0
0 to +70
+150
−65 to +150
LM311
36
40
30
±30
±15
V
CC
to V
CC
−5
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mW
mW/°C
°C
°C
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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2
LM211, LM311
ELECTRICAL CHARACTERISTICS
(V
CC
= +15 V, V
EE
= −15 V, T
A
= 25°C, unless otherwise noted) Note 1
LM211
Characteristic
Input Offset Voltage (Note 3)
R
S
≤
50 kW, T
A
= +25°C
R
S
≤
50 kW, T
low
≤
T
A
≤
T
high
*
Input Offset Current (Note 3) T
A
= +25°C
T
low
≤
T
A
≤
T
high
*
Input Bias Current T
A
= +25°C
T
low
≤
T
A
≤
T
high
*
Voltage Gain
Response Time (Note 4)
Saturation Voltage
V
ID
≤
−5.0 mV, I
O
= 50 mA, T
A
= 25°C
V
ID
≤−10
mV, I
O
= 50 mA, T
A
= 25°C
V
CC
≥
4.5 V, V
EE
= 0, T
low
≤
T
A
≤
T
high
*
V
ID
6≤6.0
mV, I
sink
≤
8.0 mA
V
ID
6≤10
mV, I
sink
≤
8.0 mA
Strobe ”On” Current (Note 5)
Output Leakage Current
V
ID
≥
5.0 mV, V
O
= 35 V, T
A
= 25°C, I
strobe
= 3.0 mA
V
ID
≥
10 mV,
V
O
= 35 V, T
A
= 25°C, I
strobe
= 3.0 mA
V
ID
≥
5.0 mV,
V
O
= 35 V, T
low
≤
T
A
≤
T
high
*
Input Voltage Range (T
low
≤
T
A
≤
T
high
*)
V
ICR
V
OL
−
−
−
−
I
S
−
−
−
−
−14.5
0.75
−
0.23
−
3.0
0.2
−
0.1
−14.7
to
13.8
+2.4
−1.3
1.5
−
0.4
−
−
10
−
0.5
+13.0
−
−
−
−
−
−
−
−
−14.5
−
0.75
−
0.23
3.0
−
0.2
−
−14.7
to
13.8
+2.4
−1.3
−
1.5
−
0.4
−
−
50
−
+13.0
mA
nA
nA
mA
V
Symbol
V
IO
−
−
I
IO
I
IB
A
V
−
−
−
−
40
−
0.7
−
1.7
−
45
−
200
200
3.0
4.0
10
20
100
150
−
−
−
−
−
−
−
−
40
−
2.0
−
1.7
−
45
−
200
200
7.5
10
50
70
250
300
−
−
nA
nA
V/mV
ns
V
Min
Typ
Max
Min
LM311
Typ
Max
Unit
mV
Positive Supply Current
Negative Supply Current
I
CC
I
EE
−
−
+6.0
−5.0
−
−
+7.5
−5.0
mA
mA
* LM211: T
low
= −25°C, T
high
= +85°C
LM311: T
low
= 0°C, T
high
= +70°C
1. Offset voltage, offset current and bias current specifications apply for a supply voltage range from a single 5.0 V supply up to
±15
V supplies.
2. This rating applies for
±15
V supplies. The positive input voltage limit is 30 V above the negative supply. The negative input voltage limit is
equal to the negative supply voltage or 30 V below the positive supply, whichever is less.
3. The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with a 1.0 mA
load. Thus, these parameters define an error band and take into account the “worst case” effects of voltage gain and input impedance.
4. The response time specified is for a 100 mV input step with 5.0 mV overdrive.
5. Do not short the strobe pin to ground; it should be current driven at 3.0 mA to 5.0 mA.
8
V
CC
Balance
Balance/Strobe
5
6
1.3 k
300
300
3.7 k
1.3 k
100
3.7 k
300
250
900
600
800
2
Inputs
3
730
340
1.3 k
1
1.3 k
5.4 k
4
V
EE
GND
5.0 k
7
200
Output
800
800
3.0 k
Figure 2. Circuit Schematic
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3
LM211, LM311
140
I IB , INPUT BIAS CURRENT (nA)
120
100
80
Normal
Pins 5 & 6 Tied
to V
CC
5.0
I IO , INPUT OFFSET CURRENT (nA)
V
CC
= +15 V
V
EE
= −15 V
V
CC
= +15 V
V
EE
= −15 V
Pins 5 & 6 Tied
to V
CC
4.0
3.0
2.0
40
0
−55
1.0
0
−55
Normal
−25
0
25
50
75
100
125
−25
0
25
50
75
100
125
T
A
, TEMPERATURE (°C)
T
A
, TEMPERATURE (°C)
Figure 3. Input Bias Current
versus Temperature
Figure 4. Input Offset Current
versus Temperature
140
I IB , INPUT BIAS CURRENT (nA)
COMMON MODE LIMITS (V)
120
100
80
60
40
20
0
−16
−12
−8.0
−4.0
0
4.0
8.0
12
16
V
CC
= +15 V
V
EE
= −15 V
T
A
= +25°C
V
CC
−0.5
−1.0
−1.5
Referred to Supply Voltages
0.4
0.2
V
EE
−55
−25
0
25
50
75
100
125
DIFFERENTIAL INPUT VOLTAGE (V)
T
A
, TEMPERATURE (°C)
Figure 5. Input Bias Current versus
Differential Input Voltage
Figure 6. Common Mode Limits
versus Temperature
Vin ,INPUT VOLTAGE (mV) VO , OUTPUT VOLTAGE (V)
Vin ,INPUT VOLTAGE (mV) VO , OUTPUT VOLTAGE (V)
+5.0 V
5.0
4.0
3.0
2.0
1.0
0
100
50
0
5.0 mV
20 mV
V
in
+5.0 V
*
)
500
W
V
O
2.0 mV
V
CC
= +15 V
V
EE
= −15 V
T
A
= +25°C
0
0.1
0.2
0.3
0.4
t
TLH
, RESPONSE TIME (ms)
0.5
0.6
5.0
4.0
3.0
2.0
1.0
0
0
−50
−100
5.0 mV
2.0 mV
20 mV
V
in
*
)
500
W
V
O
V
CC
= +15 V
V
EE
= −15 V
T
A
= +25°C
0
0.1
0.2
0.3
0.4
t
THL
, RESPONSE TIME (ms)
0.5
0.6
Figure 7. Response Time for
Various Input Overdrives
Figure 8. Response Time for
Various Input Overdrives
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4
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