9-105
DISPLA
Y
S
3
16
16 Multicolor Dot
Matrix LED Displays
LTP-254FFM-02 Series
Package Dimension
Features
2.52 inch (64.00mm) matrix height.
Low power requirement.
Excellent characters and appearance.
High contrast.
High brightness.
Wide viewing angle.
16
16 array with X-Y select.
Stackable vertically and horizontally.
Categorized for luminous intensity.
Description
The LTP-254FFM-02 is 2.52 inch (64.00mm) matrix height 16
16 dot matrix displays.
This display utilizes standard green & AlGaAs red LED chips.
The green LED chips are made from GaP on transparent GaP substrate. The AlGaAs red LED chips are made from
AlGaAs on a GaAs substrate. and it has black face and a diffusion film is added on it.
Part No.
16
16 Dot Matrix Anode
Row Cathode Column
LTP-254FFM-02
Description
Notes : All dimensions are in millimeters(Inchs.) tolerance is :
0.25mm(0.01")unless otherwise Noted.
Devices
Source Color
Green & AlGaAs Red
9-106
Com. An. Row 5
Ca. Column 8 Green
Ca. Column 1 Green
Ca. Column 2 Red
Ca. Column 7 Green
Ca. Column Row 9
Ca. Column 4 Green
Com. An. Row 10
Com. An. Row 11
Com. An. Row 12
Ca. Column 1 Red
Com. An. Row 13
No
1
2
3
4
5
6
7
8
9
10
11
12
Parameter
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
AlGaAs Red
75
100
13
0.17
5
75
125
15
0.20
5
Unit
mW
mA
mA
mA/
V
-35
to +85
-35
to +85
Pin Connection
(Com.=Common, An.=Anode, Ca.= Cathode, Col.=Column)
Internal Circuit Diagram
Absolute Maximum Ratings at Ta=25
Connection
No
13
14
15
16
17
18
19
20
21
22
23
24
Com. An. Row 3
Ca. Column 5 Red
Ca. Column 7 Red
Ca. Column 8 Red
Ca. Column 6 Green
Ca. Column 6 Red
Ca. Column 5 Green
Ca. Column 2 Green
Ca. Column 4 Red
Ca. Column 3 Green
Ca. Column 3 Red
Com. An. Row 14
Connection
25
26
27
28
29
30
31
32
33
34
35
36
No
Com. An. Row 15
Ca. Column 14 Green
Ca. Column 15 Red
Ca. Column 14 Red
Ca. Column 13 Red
Ca. Column 13 Green
Ca. Column 11 Red
Ca. Column 10Green
Ca. Column 9 Green
Ca. Column 10 Red
Ca. Column 12 Red
Com. An. Row 14
Connection
37
38
39
40
41
42
43
44
45
46
47
48
No
Connection
Com. An. Row 16
Ca. Column 16 Green
Ca. Column 15 Green
Ca. Column 16 Red
Com. An. Row 2
Ca. Column 12 Green
Com. An. Row 8
Ca. Column 1 Red
Com. An. Row 7
Com. An. Row 6
Ca. Column 11 Green
Com. An. Row 1
9-107
DISPLA
Y
S
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Dot
Reverse Current, and Dot
Luminous Intensity Matching Ratio
Symbol
I
V
P
d
V
F
I
R
I
V
-m
Min.
Typ.
900
660
20
638
2.3
2.5
Max.
2.9
3.1
100
2:1
Unit
T e s t
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=5V
I
F
=10mA
cd
nm
nm
nm
V
V
A
Electrical Optical Characteristics at Ta=25
Green
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, and Dot
Reverse Current, and Dot
Luminous Intensity Matching Ratio
Symbol
I
V
P
d
V
F
I
R
I
V
-m
Min.
Typ.
570
565
30
569
2.1
3.0
Max.
2.6
3.7
100
2:1
Unit
T e s t
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=5V
I
F
=10mA
cd
nm
nm
nm
V
V
A
AlGaAs Red
Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision
Internationale De L'Eclairage) eye-response curve.
9-108
Typical Electrical/Optical Characteristic Curves
(25
Ambient Temperatrue Unless Otherwise Noted)
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