Product Summary

The LM3914N-1 is a Dot/Bar Display Driver. It 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. The LM3914N-1 is one that allows operation of the whole system from less than 3V. The LM3914N-1 is available in an 18-lead molded (N) package.

Parametrics

LM3914N-1 absolute maximum ratings: (1)Power Dissipation Molded DIP: 1365 mW; (2)Supply Voltage: 25V; (3)Voltage on Output Drivers: 25V; (4)Input Signal Overvoltage: ±35V; (5)Divider Voltage: -100 mV to V+; (6)Reference Load Current: 10 mA; (7)Storage Temperature Rang: -55℃ to +150℃; (8)Soldering Information Dual-In-Line Package Soldering(10 seconds): 260℃; (9)Plastic Chip Carrier Package Vapor Phase (60 seconds): 215℃; (10)Infrared (15 seconds): 220℃.

Features

LM3914N-1 features: (1)Drives LEDs, LCDs or vacuum fluorescents; (2)Bar or dot display mode externally selectable by user; (3)Expandable to displays of 100 steps; (4)Internal voltage reference from 1.2V to 12V; (5)Operates with single supply of less than 3V; (6)Inputs operate down to ground; (7)Output current programmable from 2 mA to 30 mA; (8)No multiplex switching or interaction between outputs; (9)Input withstands ±35V without damage or false outputs.

Diagrams

LM3914N-1 pin configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM3914N-1
LM3914N-1
National Semiconductor (TI)
LED Lighting Drivers
Data Sheet
0-1: $1.45
1-25: $1.12
25-100: $1.01
100-250: $0.91
LM3914N-1/NOPB
LM3914N-1/NOPB
National Semiconductor (TI)
LED Lighting Drivers DOT/BAR DISPLAY DRVR
Data Sheet
0-1: $1.29
1-25: $1.04
25-100: $0.94
100-250: $0.83