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LM3914 Dot Matrix Display Driver IC - DIP-18 Package

SKU: VL4U3WIRT6
The LM3914 is a versatile analog display driver IC designed to drive up to 10 LEDs, LCDs, or vacuum fluorescent displays in either dot mode or bar graph mode. It converts an analog input voltage into a proportional visual display, making it ideal for battery level indicators, voltmeters, VU meters, power monitors, and measurement instruments. The IC contains ten precision...
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Specifications

Specifications:

IC Type: Dot/Bar Display Driver IC
Model: LM3914
Package Type: DIP-18
Display Outputs: 10 Outputs
Display Modes: Dot Mode and Bar Mode
Supply Voltage Range: 3V to 25V DC
Maximum Supply Voltage: 25V DC
Input Signal Type: Analog Voltage
Reference Voltage: Adjustable Internal Reference
LED Drive Current: Programmable (Typically 2mA to 30mA per LED)
Display Scale: Linear
Comparator Count: 10 Precision Comparators
Output Type: Current Regulated Outputs
Input Voltage Range: 0V to Reference Voltage
Accuracy: Typically ±1%
Power Consumption: Low
Operating Temperature Range: 0°C to +70°C
Storage Temperature Range: -55°C to +150°C
Mounting Type: Through-Hole
Pin Count: 18

Additional Resources

LM3914.PDF

FAQ

1. What is the LM3914 used for?

The LM3914 is used to display analog voltage levels on a 10-segment LED, LCD, or VFD display in either dot or bar graph format.

2. What is the difference between dot mode and bar mode?

In dot mode, only one LED is illuminated at a time, reducing power consumption. In bar mode, all LEDs up to the measured level are illuminated.

3. Can the LM3914 directly drive LEDs?

Yes, the IC includes current-regulated outputs capable of directly driving up to 10 LEDs without requiring external driver transistors.

4. What types of displays are commonly built using the LM3914?

The LM3914 is widely used in battery level indicators, audio VU meters, voltmeters, signal strength indicators, and measurement instruments.

5. Does the LM3914 require a microcontroller to operate?

No, the LM3914 operates directly from an analog voltage input and doe

View full product details

The LM3914 is a versatile analog display driver IC designed to drive up to 10 LEDs, LCDs, or vacuum fluorescent displays in either dot mode or bar graph mode. It converts an analog input voltage into a proportional visual display, making it ideal for battery level indicators, voltmeters, VU meters, power monitors, and measurement instruments.

The IC contains ten precision comparators and an internal voltage reference, eliminating the need for complex external circuitry. The display can be configured to operate as a moving dot indicator for low power consumption or as a bar graph for intuitive visual monitoring.

With its simple interface and wide operating voltage range, the LM3914 is widely used in audio equipment, power supply monitoring, automotive electronics, industrial instrumentation, and DIY electronics projects.

Key Features

  • Drives up to 10 LEDs directly
  • Supports dot mode and bar graph mode
  • Linear analog voltage display
  • Built-in precision voltage reference
  • Wide supply voltage range
  • Adjustable display scale
  • Low external component count
  • High accuracy comparators
  • Direct LED drive capability
  • Low power consumption in dot mode
  • Suitable for voltage and level indication
  • Easy microcontroller integration
  • Reliable and stable operation
  • Ideal for analog monitoring applications