# Dot/Bar Display Driver - LM3914 (Linear)

**Type:** Product page · **SKU:** COM-12694 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/dot-bar-display-driver-lm3914-linear.html ([markdown](https://core-electronics.com.au/dot-bar-display-driver-lm3914-linear.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## Description

This is the LM3914 Dot/Bar display analog-controlled LED driver that uses an alinear output scale. With this driver all it takes is a single, analog signal to drive a string of 10 LEDs, which can be configured into either bar mode (where all LEDs below a certain point turn on) or dot mode (with only a single LED on at a time). Hook them up properly, and you can create all sorts of nifty multi-LED displays.

 The LM3914 is very easy to apply as an analog meter circuit. A 1.2V full-scale meter requires only 1 resistor and a single 3V to 15V supply in addition to the 10 display LEDs. If the 1 resistor is a pot, it becomes the LED brightness control. The simplified block diagram illustrates this extremely simple external circuitry.

**Features:**

- Drives LEDs, LCDs or Vacuum Fluorescents
- Bar or Dot Display Mode Externally Selectable
- Expandable to Displays of 100 Steps
- Internal Voltage Reference from 1.2V to 12V
- Operates with Single Supply of Less than 3V
- Outputs can Interface with TTL or CMOS Logic
 
**Documents:**

- Datasheet
- [Hookup Guide](https://learn.sparkfun.com/tutorials/dotbar-display-driver-hookup-guide)
- Product Video

## Guides for this product

- [Digital to Analogue Conversion with Raspberry Pi](https://core-electronics.com.au/guides/raspberry-pi/digital-to-analogue-conversion-with-raspberry-pi/)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/o/dot_bar_display_driver_-_lm3914__linear___com-12694__01.jpg)