LM3914 Dot Bar Display Driver IC DIP-18
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020

LM3914 Dot Bar Display Driver IC DIP-18

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  • Product SKU: INTEG097
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The LM3914 is a popular integrated circuit (IC) that functions as a dot/bar display driver. It is commonly used to drive LED bar graph displays or other visual indicators.

Here's some information about the LM3914

Functionality: The LM3914 is designed to drive a series of LEDs to indicate the level of an analog signal. It can be configured to operate either as a dot mode (individual LEDs light up) or as a bar mode (a series of LEDs form a bar graph).

DIP-18 Package: The "DIP-18" designation indicates that the IC is packaged in a Dual Inline Package with 18 pins.

Pin Configuration: The LM3914 typically has 18 pins, and its pin functions include inputs for the analog signal, reference voltage, and outputs to drive LEDs.

Voltage Range: The LM3914 can operate over a wide voltage range, making it suitable for various applications.

Adjustable Voltage Reference: The LM3914 allows the user to set a reference voltage, and the LEDs light up based on the comparison between the input signal and this reference voltage.


Common applications include audio level meters, VU meters, battery level indicators, and other visual displays of analog signal levels.


  • Drives LEDs, LCDs or Vacuum Fluorescents
  • Bar or Dot Display Mode Externally Selectable by User
  • Expandable to Displays of 100 Steps
  • Internal Voltage Reference from 1.2V to 12V
  • Operates with a Single Supply of Less than 3V
  • Inputs Operate Down to Ground
  • Output Current Programmable from 2 mA to 30 mA
  • No Multiplex Switching or Interaction Between Outputs
  • Input Withstands ±35V without Damage or False Outputs
  • LED Driver Outputs are currently regulated, Open-collectors
  • Outputs can Interface with TTL or CMOS Logic
  • The Internal 10-step Divider is Floating and can be Referenced to a Wide Range of Voltages


  • Crude Battery level indicators
  • Low-cost monitor devices
  • Digital gauges
  • Electronic displays
  • Fade bars

Physical Attributes

  • Length * Width * Height (mm): 19 x 8 x 7
  • Weight (gm): 2


Package Includes

  • 1 x LM3914 Dot/Bar Display Driver IC DIP-18

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