- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for LM1391N
- Part Number LM1391N
- Manufacturer Texas Instruments
- Pin Count 8
- Part Category Integrated Circuit
- Package Category Dual-In-Line Packages
- Footprint Name Dual-In-Line Packages - DS75176BN
- Released Date Jul 30, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
LM1391N Details
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Manufacturer Part Number:
LM1391N
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Pbfree Code:
No
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Rohs Code:
No
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Part Life Cycle Code:
Obsolete
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Part Package Code:
DIP
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Package Description:
DIP, DIP8,.3
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Pin Count:
8
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Reach Compliance Code:
Unknown
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HTS Code:
8542.39.00.60
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Manufacturer:
Texas Instruments
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YTEOL:
0
LM1391N Frequently Asked Questions (FAQs)
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The maximum voltage that can be applied to the input pins is the supply voltage (VCC) + 0.3V. Exceeding this voltage can cause damage to the device.
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To prevent oscillation, add hysteresis to the comparator by connecting a small resistor (e.g., 1kΩ) between the output and the non-inverting input. This creates a small positive feedback loop that helps to stabilize the output.
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The minimum supply voltage required for the LM1391N to operate correctly is 2.5V. However, the device can operate down to 2V, but with reduced performance and accuracy.
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No, the LM1391N is a comparator, not an amplifier. It is designed to provide a digital output based on the comparison of the input voltages, not to amplify a signal. Using it as an amplifier can lead to unstable operation and incorrect results.
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The pull-up resistor value depends on the load current and the desired rise time. A general rule of thumb is to choose a pull-up resistor value between 1kΩ and 10kΩ. A smaller value will result in a faster rise time, but may also increase power consumption.
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LM1391N Overview
Use the download button to access the LM1391N schematic symbol, PCB footprint, and 3D model.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.