9 4 4 Single Color & Multicolor
Dot Matrix LED Displays
LTP-2344
2844A
3
Features
2.0 inch (50.80mm) matrix height.
Low power requirement.
Single plane, wide viewing angle.
Solid state reliability.
4 4 array with X-Y select.
Compatible with usascll and ebcdic codes.
Stackable horizontally.
Choices of two matrix orientation.
Easy mounting on P.C. board.
Categorized for luminous intensity.
Single color displays have the choices of four bright
colors-green/yellow/red orange/AlGaAs red.
Multicolor displays are applicable to three bright colors
: green, red orange and yellow (green and red orange
mixed)
Series
Package Dimensions
A. LTP-2344
Description
The LTP-2X44 series are 2.0 inch (50.80mm)matrix height
4 4 dot matrix displays.
The LTP-2844A
3
are multicolor applicable displays.
The multicolor displays have gray face and white dots.
The LTP-2344 series are single color displays. The
yellow,green and red orange displays have gray face
and white dot color. The AlGaAs red devices have red
face and red dots.
The green series devices utilize LED chipse which are
made from GaP on a transparent GaP substrate.
The yellow and red orange series devices utilize LED
chips which are made from GaAsP on a transparent GaP
substrate.
The AlGaAs red series devices utilize LED chips which
are made from AIGaAs on a non-transparent GaAs
substrate.
B. LTP-2844A
3
Notes : All dimensions are in millimeters(inches).
Tolerance :
0.25mm (0.01") unless otherwise
noted.
Devices
Part No.
Green
2344G
-
Yellow
2344Y
-
Red
Orange
2344E
-
AlGaAs
Red
2344C
-
Multi
Color
-
2844A
3
Description
Anode Row, Cathode Column
Anode Row, Cathode Column
Package
Dimension
A
B
Internal
Circuit
Diagram
A
B
9-48
Pin Connection
Connection
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A. LTP-2344
Cathode Column 1
Cathode Column 2
Cathode Column 3
Cathode Column 4
Anode Row 1
Anode Row 2
Anode Row 3
Anode Row 4
B. LTP-2844A
3
Cathode Column 1 Red Orange
Cathode Column 1 Green
Cathode Column 2 Red Orange
Cathode Column 2 Green
Cathode Column 3 Red Orange
Cathode Column 3 Green
Cathode Column 4 Red Orange
Cathode Column 4 Green
Anode Row 1 Red Orange
Anode Row 1 Green
Anode Row 2 Red Orange
Anode Row 2 Green
Anode Row 3 Red Orange
Anode Row 3 Green
Anode Row 4 Red Orange
Anode Row 4 Green
Internal Circuit Diagrams
A. LTP-2344
B. LTP-2844A3
Absolute Maximum Ratings at Ta=25
Parameter
Average Power Dissipation Per Dot
Peak Forward Current Per Dot
Average Forward Current Per Dot
Derating Linear from 25 Per Dot
Reverse Voltage Per Dot
Operating Temperature Range
Storage Temperature Range
Solder Temperature 1/16 Inch Below Seating Plane for 3 Seconds at 260
Green
96
90
11
0.15
15
Yellow
92
80
8
0.08
15
Red
Orange
96
90
11
0.15
-35
-35
15
to +85
to +85
AlGaAs Red
96
110
14
0.19
15
Unit
mW
mA
mA
mA/
V
9-49
DISPLAYS
Electrical/Optical Characteristics at Ta=25
LTP-2344G/2844A
3
(Green)
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
5.0
Typ.
11.0
565
30
569
6.3
9
Max.
Unit
m cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=15V
I
F
=10mA
7.8
11.1
100
2:1
V
V
A
LTP-2344Y
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
5.0
Typ.
11.0
585
35
588
6.0
7.8
Max.
Unit
m cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=15V
I
F
=10mA
7.8
10.2
100
2:1
V
V
A
LTP-2344E/2844A
3
(Red Orange)
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
5.0
Typ.
11.0
630
40
621
6.0
7.8
Max.
Unit
m cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=15V
I
F
=10mA
7.8
10.2
100
2:1
V
V
A
LTP-2344C
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Dot
Reverse Current, and Chip
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
15.1
Typ.
28
660
35
638
5.4
6
Max.
Unit
m cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=15V
I
F
=10mA
7.2
8.1
100
2:1
V
V
A
9-50
Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision
Internationale De L’Eclairage) eye-response curve.
详细参数
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