Voltage Comparator. LM311-N Datasheet

LM311-N Datasheet PDF


Part Number

LM311-N

Description

Voltage Comparator

Manufacture

etcTI

Total Page 29 Pages
Datasheet
Download LM311-N Datasheet


LM311-N
LM111-N, LM211-N, LM311-N
www.ti.com
SNOSBJ1E – MAY 1999 – REVISED MARCH 2013
LM111-N/LM211-N/LM311-N Voltage Comparator
Check for Samples: LM111-N, LM211-N, LM311-N
FEATURES
1
2 Operates From Single 5V Supply
• Input Current: 150 nA Max. Over Temperature
• Offset Current: 20 nA Max. Over Temperature
• Differential Input Voltage Range: ±30V
• Power Consumption: 135 mW at ±15V
DESCRIPTION
The LM111-N, LM211-N and LM311-N are voltage
comparators that have input currents nearly a
thousand times lower than devices like the LM106 or
LM710. They are also designed to operate over a
wider range of supply voltages: from standard ±15V
op amp supplies down to the single 5V supply used
for IC logic. Their output is compatible with RTL, DTL
and TTL as well as MOS circuits. Further, they can
drive lamps or relays, switching voltages up to 50V at
currents as high as 50 mA.
Both the inputs and the outputs of the LM111-N,
LM211-N or the LM311-N can be isolated from
system ground, and the output can drive loads
referred to ground, the positive supply or the negative
supply. Offset balancing and strobe capability are
provided and outputs can be wire OR'ed. Although
slower than the LM106 and LM710 (200 ns response
time vs 40 ns) the devices are also much less prone
to spurious oscillations. The LM111-N has the same
pin configuration as the LM106 and LM710.
The LM211-N is identical to the LM111-N, except that
its performance is specified over a 25°C to +85°C
temperature range instead of 55°C to +125°C. The
LM311-N has a temperature range of 0°C to +70°C.
Typical Applications
NOTE
Pin connections shown in Schematic Diagram and Typical Applications are for the LMC
TO-99 package.
Figure 1. Offset Balancing
Do Not Ground Strobe Pin. Output is turned off when current is
pulled from Strobe Pin.
Figure 2. Strobing
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated

LM311-N
LM111-N, LM211-N, LM311-N
SNOSBJ1E – MAY 1999 – REVISED MARCH 2013
www.ti.com
Increases typical common mode slew from 7.0V/μs to 18V/μs.
Figure 3. Increasing Input Stage Current
Figure 4. Detector for Magnetic Transducer
Figure 5. Digital Transmission Isolator
*Absorbs inductive kickback of relay and protects IC from severe
voltage transients on V++ line.
Do Not Ground Strobe Pin.
Figure 6. Relay Driver with Strobe
Do Not Ground Strobe Pin.
Typical input current is 50 pA with inputs strobed off.
Pin connections shown in Schematic Diagram and Typical
Applications are for the LMC TO-99 package.
Figure 7. Strobing off Both Input and Output
Stages
*Solid tantalum
Figure 8. Positive Peak Detector
2 Submit Documentation Feedback
Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM111-N LM211-N LM311-N





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