The LM311P is a voltage comparator in 8 pin DIP package.
This blog will introduce LM311P systematically from its pinout, features to its application, equivalents, also including where and how to use this component and so much more with circuit examples.
LM311P (Voltage Comparator)
Catalog
LMx11 Family Overview
The LM111, LM211 and LM311 from Texas Instruments are differential input voltage comparators with a wide operating voltage range and 200 ns response time. The inputs of these devices can be isolated from system ground and the uncommitted outputs can drive loads referred to either supply rail or ground. These single comparators are provided with balancing and strobe capability.
LM311P Description
The LM311P is a voltage comparator in 8 pin DIP package. It is designed to operate over a wide range of supply voltages from standard ±15V op amp supplies down to single 5V supply used for IC logic. The output of comparator is compatible with RTL, DTL and TTL as well as MOS circuits. The LM311P drives lamps or relays, switching voltages up to 50V at currents as high as 50mA. Both inputs and outputs of LM311P can be isolated from system ground and output can drive loads referred to ground. Offset balancing and strobe capability are provided and outputs can be wired. The device is less prone to spurious oscillations.
CAD Models
LM311P Symbol
LM311P Footprint
LM311P Packages
LM311P JG Package
LM311P FK Package
LM311P Features
1) Fast Response Time: 165 ns
2) Strobe Capability
3) Maximum Input Bias Current: 300 nA
4) Maximum Input Offset Current: 70 nA
5) Can Operate From Single 5-V Supply
6) Available in Q-Temp Automotive
High-ReliabilityAutomotive Applications
Configuration Control and Print Support
Qualification to Automotive Standards
7) On Products Compliant to MIL-PRF-38535
8) All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.
LM311P Product Attribute
Brand:
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Texas Instruments
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Comparator Type:
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General Purpose
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Mounting Type:
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Through Hole
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Package Type:
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PDIP
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Power Supply Type:
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Dual, Single
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Output Type:
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Open Collector/Emitter
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Number of Channels per Chip:
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1
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Typical Response Time:
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0.165µs
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Pin Count:
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8
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Typical Single Supply Voltage:
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5 → 28 V
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Dimensions:
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9.81mm x 6.35mm x 4.57mm
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Number of Channels:
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1 Channel
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Response Time:
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115 ns
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Subcategory:
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Amplifier ICs
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Typical Voltage Gain:
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106.02 dB
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Maximum Operating Temperature:
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+70 °C
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Minimum Operating Temperature:
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0 °C
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Typical Dual Supply Voltage:
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±12 V, ±3 V, ±5 V, ±9 V
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Reference Voltage:
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No
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Shutdown:
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No Shutdown
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Supply Type:
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Single, Dual
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Technology:
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Bipolar
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Type:
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Voltage Comparator
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RoHS Status
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ROHS3 Compliant
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LM311P Applications
Signal Processing
Application Circuits
100-kHz Free-Running Multivibrator
Offset Balancing
Strobing
Zero-Crossing Detector
TTL Interface with High-Level Logic
Detector for Magnetic Transducer
100-kHz Crystal Oscillator
Comparator and Solenoid Driver
Strobing both Inout and Output Stages Simultaneoously
Low-voltage Adjustable Reference Supply
Zero-Crossing Detector Driving MOS Logic
Precision Squarer
Digital Transmission Isolator
Positive-Peak Detector
Similar Parts
NJM311D, LM311N, LM311E, LM311J8, LM311N8, LM311N8#PBF, LM311J-8, LM311N/NOPB, LM311BN, LM311NG
Using Warnings
This device has limited built-in ESD protection. The leads should be shorted together or device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
LM311P Manufacturer
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and education technology[8] products including calculators, microcontrollers and multi-core processors.
FAQ
What is a voltage comparator?
A voltage comparator is an electrical circuit that compares two input voltages and determines which is higher. Because the polarity of the op-output amp's circuit depends on the polarity of the difference between the two input voltages, making a voltage comparator from an op amp is simple.
What is the function of LM311P?
It is designed to operate over a wide range of supply voltages from standard ±15V op amp supplies down to single 5V supply used for IC logic.