LM211, LM311
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 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. Thus the LM211/LM311 can be used to drive relays, lamps or
solenoids.
3.0 k
5.0 k
5
2
V
CC
V
CC
R
L
6
8 7
1
Inputs
2
Output
3
V
EE
+
-
4
8
7
1
R
L
Output
8
1
8
1
http://onsemi.com
MARKING
DIAGRAMS
8
PDIP–8
N SUFFIX
CASE 626
1
8
SO–8
D SUFFIX
CASE 751
1
x
= 2 or 3
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
LMx11
ALYW
LM311N
AWL
YYWW
+
–
Inputs
3
4
V
EE
Split Power Supply with Offset Balance
Single Supply
V
CC
2
Inputs 3
V
CC
7
Output
2
Inputs
3
+
–
4
V
EE
8
1
+
–
4
8
1
7
Output
R
L
PIN CONNECTIONS
Gnd
Inputs
V
EE
1
2
3
4
8
R
L
V
CC
Output
Balance/Strobe
Balance
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
+
–
7
6
5
(Top View)
V
CC
2
V
CC
2
Inputs
3
4
V
EE
Load Referred to Positive Supply
Inputs
7
1
R
L
Output
8
3
+
–
6
8
1
7
R
L
Output
ORDERING INFORMATION
Device
LM211D
TTL Strobe
LM211DR2
LM311D
Package
SO–8
SO–8
SO–8
SO–8
PDIP–8
Shipping
98 Units/Rail
2500 Tape & Reel
98 Units/Rail
2500 Tape & Reel
50 Units/Rail
+
–
4
V
EE
1.0 k
Strobe Capability
LM311DR2
LM311N
Figure 1. Typical Comparator Design Configurations
©
Semiconductor Components Industries, LLC, 2001
1
February, 2001 – Rev. 0
Publication Order Number:
LM211/D
ETC [ ETC ]
