> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## 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)