LM3914N

The LM3914N is one member of the LM3914 family which is designed as the dot/bar display driver that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. This device contains its own adjustable reference and accurate 10-step voltage divider, and is very easy to apply as an analog meter circuit.

Features of the LM3914N are:(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; (10)LED driver outputs are current regulated, open-collectors; (11)outputs can interface with TTL or CMOS logic; (12)the internal 10-step divider is floating and can be referenced to a wide range of voltages.

The absolute maximum ratings of the LM3914N can be summarized as:(1)power dissipation molded DIP (N):1365 mW;(2)supply voltage:25 V;(3)voltage on output drivers:25 V;(4)input signal overvoltage:±35 V;(5)divider voltage:-100 mV to V+;(6)reference load current:10 mA;(7)storage temperature range:-55°C to +150°C;(8)soldering information dual-in-line package soldering (10 seconds):260°C;(9)plastic chip carrier package vapor phase (60 seconds):215°C;(10)plastic chip carrier package infrared (15 seconds):220°C. If you want to know more information such as the electrical characteristics about the LM3914N, please download the datasheet in www.seekic.com or www.chinaicmart.com .