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Dot/ Bar Display Driver

LM3914

ic amplifier

The LM3914 is a dot/bar display driver IC used for cascading multiple displays in dot mode. It features pins for power supply, ground, LED outputs, and control signals.

Manufacturer datasheet
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Specifications

2
Operating Voltage
VCC/VDD/VIN/supply range: typically 4.5 to 36 VDC, depending on the specific application and configuration.
Package
PLCC (Figure 28) or PDIP (Figure 29)

Pinout

18
PinNameFunctionsNotes
3V+
POWER
Positive supply voltage
2V-
GND
Negative supply voltage
1LED 1
GPIO
First LED output
4DIVIDER (LOW END)
GPIO
Divider for low-end signal input
5SIGNAL INPUT
GPIO
Signal input pin
6DIVIDER (HIGH END)
GPIO
Divider for high-end signal input
7N/C
GND
Not connected
8REFERENCE OUTPUT
GPIO
Reference output pin
9MODE SELECT
GPIO
Mode selection input
10LED 2
GPIO
Second LED output
11LED 3
GPIO
Third LED output
12LED 4
GPIO
Fourth LED output
13LED 5
GPIO
Fifth LED output
14LED 6
GPIO
Sixth LED output
15LED 7
GPIO
Seventh LED output
16LED 8
GPIO
Eighth LED output
17LED 9
GPIO
Ninth LED output
18LED 10
GPIO
Tenth LED output

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