Order this document by LM311/D
Highly Flexible Voltage
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 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 LM211/LM311 can be used to
drive relays, lamps or solenoids.
LM311
LM211
HIGH PERFORMANCE
VOLTAGE COMPARATORS
SEMICONDUCTOR
TECHNICAL DATA
Typical Comparator Design Configurations
Split Power Supply with Offset Balance
3.0 k
VCC
2
5.0 k
5
2
RL
6
Inputs
8 7
Output
1
4
VEE
Ground–Referred Load
VCC
2
Inputs 3
Load Referred to Negative Supply
VCC
2
7
Inputs
Output
RL
3
3
VEE
+
–
4
Single Supply
VCC
8
7
1
RL
Output
8
1
N SUFFIX
PLASTIC PACKAGE
CASE 626
+
Inputs
3
8
1
–
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
+
–
4
8
1
+
–
4
8
7
1
RL
Output
PIN CONNECTIONS
Gnd
1
2
8
VEE
Input polarity is reversed when
Gnd pin is used as an output.
VCC
Output
Balance/Strobe
Balance
VEE
Input polarity is reversed when
Gnd pin is used as an output.
Inputs
3
+
–
7
6
5
VEE
Load Referred to Positive Supply
Strobe Capability
VCC
2
7
1
RL
Output
Inputs
3
4
(Top View)
VCC
2
Inputs
3
4
VEE
+
–
6
8
7
1
RL
Output
+
–
8
ORDERING INFORMATION
TTL Strobe
Device
LM211D
LM311D
LM311N
Operating
Temperature Range
TA = 25° to +85°C
TA = 0° to +70°C
Package
SO–8
SO–8
Plastic DIP
Rev 5
4
VEE
1.0 k
©
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1