LM3914VX/NOPB

Display Drivers Overview

The LM3914VX/NOPB is a monolithic integrated circuit designed to drive ten LEDs in either dot or bar display mode. It functions as a linear LED driver with an internal voltage reference and ten comparators. The device accepts an analog input signal and provides proportional LED illumination. It operates from a single power supply, typically ranging from 3V to 25V, allowing for flexible integration into various indicator systems without requiring external components for basic operation.

Display Drivers Feature Summary

• Supports configurable dot or bar display output modes via a single control pin
• Integrates a precision voltage reference and ten matched comparators on-chip
• Enables direct connection of LEDs to the output pins without current-limiting resistors when using appropriate supply voltages
• Features a common cathode output structure suitable for standard LED arrays

Display Drivers Applications

• Audio level meters for amplifiers and mixers
• Battery voltage indicators
• Signal strength displays
• General-purpose analog level indication

Display Drivers Procurement Notes

Verify component authenticity through authorized distributors or TI directly. Confirm the specific suffix 'VX' indicates the tape-and-reel packaging variant. Check for RoHS compliance status as indicated by the 'NOPB' suffix. Ensure the source document matches the official Texas Instruments datasheet for the LM3914 series to validate electrical specifications and pinout configurations before procurement.

Display Drivers Selection Notes

Select this component when a simple, low-component-count solution for analog level indication is required. It is suitable for applications where high-speed switching is not necessary. Consider the thermal dissipation capabilities if driving multiple LEDs at high currents. Compare against digital alternatives if precise digital control or multiplexing is needed instead of continuous analog representation.

Display Drivers Part Context

This part belongs to the LM3914 family of LED drivers from Texas Instruments. The family includes variants such as LM3914N (DIP package) and LM3914DR (SOIC package). The 'VX' suffix specifically denotes the small-outline transistor (SOT-23) or similar small footprint tape-and-reel packaging, distinguishing it from through-hole or larger surface-mount options within the same functional family.

Display Drivers Replacement Considerations

Direct pin-to-pin replacements include other LM3914 variants like LM3914DR or LM3914N depending on package requirements. Verify that substitute parts maintain the same comparator threshold characteristics and output drive capabilities. Cross-reference with LM3915 or LM3916 only if logarithmic scaling or different display modes are acceptable deviations from the linear response of the LM3914.