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LM3914 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM3914
Description  Dot/Bar Display Driver
PDF  19 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3914 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Dissipation (Note 6)
Molded DIP (N)
1365 mW
Supply Voltage
25V
Voltage on Output Drivers
25V
Input Signal Overvoltage (Note 4)
±35V
Divider Voltage
−100 mV to V
+
Reference Load Current
10 mA
Storage Temperature Range
−55˚C to +150˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds)
260˚C
Plastic Chip Carrier Package
Vapor Phase (60 seconds)
215˚C
Infrared (15 seconds)
220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics (Notes 2, 4)
Parameter
Conditions (Note 2)
Min
Typ
Max
Units
COMPARATOR
Offset Voltage, Buffer and First
Comparator
0V
≤ V
RLO = VRHI ≤ 12V,
I
LED = 1mA
310
mV
Offset Voltage, Buffer and Any Other
Comparator
0V
≤ V
RLO = VRHI ≤ 12V,
I
LED = 1mA
315
mV
Gain (
∆I
LED/∆VIN)IL(REF) = 2 mA, ILED = 10 mA
3
8
mA/mV
Input Bias Current (at Pin 5)
0V
≤ V
IN ≤ V
+ − 1.5V
25
100
nA
Input Signal Overvoltage
No Change in Display
−35
35
V
VOLTAGE-DIVIDER
Divider Resistance
Total, Pin 6 to 4
8
12
17
k
Ω
Accuracy
(Note 3)
0.5
2
%
VOLTAGE REFERENCE
Output Voltage
0.1 mA
≤ I
L(REF) ≤ 4 mA,
V
+ = V
LED = 5V
1.2
1.28
1.34
V
Line Regulation
3V
≤ V+ ≤ 18V
0.01
0.03
%/V
Load Regulation
0.1 mA
≤ I
L(REF) ≤ 4 mA,
V
+ = V
LED = 5V
0.4
2
%
Output Voltage Change with
Temperature
0˚C
≤ T
A ≤ +70˚C, IL(REF) = 1 mA,
V
+ = 5V
1
%
Adjust Pin Current
75
120
µA
OUTPUT DRIVERS
LED Current
V
+ = V
LED = 5V, IL(REF) = 1 mA
7
10
13
mA
LED Current Difference (Between
Largest and Smallest LED Currents)
V
LED = 5V
I
LED = 2 mA
0.12
0.4
mA
I
LED = 20 mA
1.2
3
LED Current Regulation
2V
≤ V
LED ≤ 17V
I
LED = 2 mA
0.1
0.25
mA
I
LED = 20 mA
1
3
Dropout Voltage
I
LED(ON) = 20 mA, VLED = 5V,
∆I
LED = 2mA
1.5
V
Saturation Voltage
I
LED = 2.0 mA, IL(REF) = 0.4 mA
0.15
0.4
V
Output Leakage, Each Collector
(Bar Mode) (Note 5)
0.1
10
µA
Output Leakage
(Dot Mode)
(Note 5)
Pins 10–18
0.1
10
µA
Pin 1
60
150
450
µA
SUPPLY CURRENT
Standby Supply Current
(All Outputs Off)
V
+ = 5V,
I
L(REF) = 0.2 mA
2.4
4.2
mA
V
+ = 20V,
I
L(REF) = 1.0 mA
6.1
9.2
mA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
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