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LM3914N-1 datasheet & circuit | pinout

Discover the LM3914N-1 Reference Manual for comprehensive details on circuits, pinouts, and Arduino integration. Understand the difference between LM3914N and LM3914N-1, and explore replacement options. Ideal for your engineering projects, find valuable insights and technical specifications.

Brands: Texas Instruments

Download: LM3914N-1 Datasheet PDF

Price: inquiry

In Stock: 26,782

Display Type: LED

Configuration: Dot/Bar Display

Interface: -

Package: 18-DIP (0.300, 7.62mm)

LM3914N-1 Dot/Bar Display Driver

LM3914N-1 Pinout Equivalent

1：Overview of the LM3914N-1:

The LM3914N-1 is a driver chip that converts input analog voltage signals into linear LED display outputs. It can be used for various applications requiring intuitive display of analog quantities, such as volume indication and battery level monitoring. It comes in a standard dual in-line package (DIP) and operates over a wide range of voltages. The chip features strong driving capability and switchable display modes.

2： LM3914N-1 Important pin function definition:

Pin Number	Pin Name	Description
Pin1、Pin10–18	LED1–LED10	Connect the negative poles of 10 LEDs that require driving (same function as pin 1, jointly connecting 10 LEDs).
Pin2	V−	Ground pin of integrated circuit
Pin3	V+	Power pin, supply voltage range from 3V to 18V
Pin4	RLO	Low-level voltage pin for voltage division, serving as the low end of a 10-level voltage divider.
Pin5	SIG	Analog signal input pin. Controls the LED according to this input signal.
Pin6	RHI	High-level voltage pin for voltage division, serving as the high end of a 10-level voltage divider.
Pin7	REF OUT	Output reference voltage pin for limiting LED current.
Pin8	REF ADJ	Pin for adjusting voltage reference.
Pin9	MODE	Pin for switching between dot mode and bar mode

3：Alternative model recommendation

LM389N：The LM389N chip is also a display driver. In some aspects, it has similar functions to the LM3914N-1, such as being able to be used to drive LEDs for level indication. However, the LM389N is different from the LM3914N-1 in internal circuit structure and specific parameters. For example, there may be differences in its voltage adaptation range and output current capability.

MAX7219：It is a product of Maxim. It is mainly used to drive multi-digit LED digital tubes or matrix LED displays. Although its application scenario is not completely the same as that of LM3914N-1. LM3914N-1 is mainly used for LED display driving of linear analog quantities, while MAX7219 focuses more on digital display.

TLC5926IPWPR：Texas Instruments’ LED lighting driver chip, packaged in a surface-mount TSSOP24, is primarily used for LED lighting drivers. However, it can be used as an alternative to the LM3914N-1 to achieve similar LED display functions in applications where display accuracy is not particularly critical and where analog signals can be appropriately converted to suitable digital inputs for the chip. It features multiple output channels, allowing flexible control of multiple LEDs.

MAX6955：MAX6955, a product of Maxim Integrated, is a serial input/output LED display driver that can drive multiple-digit seven-segment digital tubes or matrix LED displays. It has multiple display modes and control functions. By connecting to a microcontroller or other control circuits through a serial interface, flexible display control can be achieved.