Motorola LM311N, LM311DR2, LM311D, LM211DR2, LM211D Datasheet
Order this document by LM311/D
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 VCC or the VEE 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. Thus the LM21 1/LM31 1 can be used to
drive relays, lamps or solenoids.
T ypical Comparator Design Configurations
Split Power Supply with Offset Balance
V
EE
V
8
1
V
8
6
CC
CC
CC
R
L
8
7
Output
1
7
Output
R
L
R
L
7
1
Output
Inputs
Load Referred to Negative Supply
Inputs
Inputs
3.0 k
5.0 k
5
2
+
Inputs
3
–
4
V
Ground–Referred Load
2
+
Inputs
3
–
4
V
EE
Input polarity is reversed when
Gnd pin is used as an output.
Load Referred to Positive Supply Strobe Capability
2
+
Inputs
3
–
4
V
EE
Single Supply
V
CC
2
3
V
2
3
Input polarity is reversed when
Gnd pin is used as an output.
V
2
3
4
V
EE
EE
CC
+
–
8
+
–
4
V
CC
8
+
–
1
4
V
EE
8
1
6
1.0 k
1
R
L
7
7
7
R
L
R
L
Output
Output
Output
TTL Strobe
HIGH PERFORMANCE
VOLTAGE COMPARATORS
SEMICONDUCTOR
TECHNICAL DATA
8
1
N SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
V
8
CC
7
Output
6
Balance/Strobe
5
Balance
Inputs
Device
LM211D
LM311D
LM311N
Gnd
1
2
+
3
–
4
V
EE
(Top View)
ORDERING INFORMATION
Operating
Temperature Range
TA = 25° to +85°C
TA = 0° to +70°C
Package
SO–8
SO–8
Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
Motorola, Inc. 1996 Rev 5
1
LM311 LM211
MAXIMUM RATINGS (T
= +25°C, unless otherwise noted.)
A
Rating Symbol LM211 LM311 Unit
Total Supply Voltage VCC +VEE 36 36 Vdc
Output to Negative Supply Voltage VO –V
Ground to Negative Supply Voltage V
EE
Input Differential Voltage V
Input Voltage (Note 2) V
EE
ID
in
50 40 Vdc
30 30 Vdc
±30 ±30 Vdc
±15 ±15 Vdc
Voltage at Strobe Pin – VCC to VCC–5 VCC to VCC–5 Vdc
Power Dissipation and Thermal Characteristics
Plastic DIP P
Derate Above TA = +25°C 1/θ
Operating Ambient Temperature Range T
Operating Junction Temperature T
Storage Temperature Range T
ELECTRICAL CHARACTERISTICS (V
= +15 V, VEE = –15 V, TA = 25°C, unless otherwise noted [Note 1].)
CC
D
JA
A
J(max)
stg
–25 to +85 0 to +70 °C
+150 +150 °C
–65 to +150 –65 to +150 °C
625 mW
5.0 mW/°C
LM211 LM311
Characteristic Symbol
Input Offset Voltage (Note 3) V
IO
Min Typ Max Min Typ Max
RS ≤ 50 kΩ, TA = +25°C – 0.7 3.0 – 2.0 7.5
RS ≤ 50 kΩ, T
Input Offset Current (Note 3) TA = +25°C I
T
≤ TA ≤ T
low
Input Bias Current TA = +25°C I
T
≤ TA ≤ T
low
Voltage Gain A
≤ TA ≤ T
low
* – – 20 – – 70
high
* – – 150 – – 300
high
* – – 4.0 – – 10
high
IO
IB
V
– 1.7 10 – 1.7 50 nA
– 45 100 – 45 250 nA
40 200 – 40 200 – V/mV
Response Time (Note 4) – 200 – – 200 – ns
Saturation Voltage V
OL
VID ≤ –5.0 mV, IO = 50 mA, TA = 25°C – 0.75 1.5 – – –
VID ≤–10 mV , IO = 50 mA, TA = 25°C – – – – 0.75 1.5
VCC ≥ 4.5 V, VEE = 0, T
VID 6≤6.0 mV , I
VID 6≤10 mV , I
sink
sink
Strobe ”On” Current (Note 5) I
≤ TA ≤ T
low
≤ 8.0 mA
≤ 8.0 mA
high
*
– 0.23 0.4 – – –
– – – – 0.23 0.4
S
– 3.0 – – 3.0 – mA
Output Leakage Current
VID ≥ 5.0 mV, VO= 35 V, TA = 25°C, I
VID
≥ 10 mV , VO
VID
≥ 5.0 mV , VO
Input Voltage Range (T
= 35 V, TA = 25°C, I
= 35 V, T
low
≤ TA ≤ T
low
≤ TA ≤ T
high
Positive Supply Current I
Negative Supply Current I
* T
= –25°C for LM211 T
low
= 0°C for LM311 = +70°C for LM311
NOTES: 1. Of fset voltage, of fset current and bias current specifications apply for a supply voltage range from a single 5.0 V supply up to ±15V 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.
= 3.0 mA – 0.2 10 – – – nA
strobe
= 3.0 mA – – – – 0.2 50 nA
strobe
* – 0.1 0.5 – – – µA
high
*) V
high
ICR
CC
EE
= +85°C for LM211
–14.5 –14.7 to
13.8
+13.0 –14.5 –14.7 to
13.8
– +2.4 +6.0 – +2.4 +7.5 mA
– –1.3 –5.0 – –1.3 –5.0 mA
+13.0 V
Unit
mV
V
2
MOTOROLA ANALOG IC DEVICE DATA
Balance
Balance/Strobe
Inputs
LM311 LM211
Figure 1. Circuit Schematic
8
V
7
Output
1
Gnd
4
V
CC
EE
1.3 k
3005
300
6
2
3
1.3 k
3.7 k
100
3.7 k
730
340
800800
3.0 k
5.0 k
200
600
250
1.3 k
1.3 k
300
900
800
5.4 k
Figure 2. Input Bias Current
versus T emperature
140
120
100
80
, INPUT BIAS CURRENT (nA)
IB
40
I
0
–55 –25 0 25 50 75 100 125
Normal
TA, TEMPERATURE (°C) TA, TEMPERATURE (°C)
Pins 5 & 6 Tied
to V
VCC = +15 V
VEE = –15 V
CC
Figure 4. Input Bias Current versus
Differential Input Voltage
140
120
100
80
VCC = +15 V
VEE = –15 V
°
TA = +25
Figure 3. Input Offset Current
versus T emperature
5.0
VCC = +15 V
4.0
3.0
2.0
1.0
, INPUT OFFSET CURRENT (nA)COMMON MODE LIMITS (V)
IO
I
0
–55 –25 0 25 50 75 100 125
Pins 5 & 6 Tied
to V
CC
Normal
VEE = –15 V
Figure 5. Common Mode Limits
versus T emperature
V
CC
C
–0.5
–1.0
–1.5
Referred to Supply Voltages
60
40
, INPUT BIAS CURRENT (nA)
IB
I
20
0
–16 –12 –8.0 –4.0 0 4.0 8.0 12 16
DIFFERENTIAL INPUT VOLTAGE (V)
MOTOROLA ANALOG IC DEVICE DATA
0.4
0.2
V
EE
–55 –25 0 25 50 75 100 125
TA, TEMPERATURE (°C)
3
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