LM3914N Datasheet

Dot/Bar Display Driver


The LM3914N is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. A single pin changes the display from a moving dot to a bar graph. Current drive to the LEDs is regulated and programmable, eliminating the need for resistors. This feature is one that allows operation of the whole system from less than 3V. LM3914N Features • 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 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 Current 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


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Manufacturer information


Microchip Technology Inc. is a leading provider of microcontroller, mixed-signal, analog and Flash-IP solutions, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.

Microchip Technology Inc. has acquired Atmel.

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