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3 16 16 Multicolor Dot Matrix LED Displays
LTP-254FFM-02 Series
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.
Package Dimension
Notes : All dimensions are in millimeters(Inchs.) tolerance is :
0.25mm(0.01")unless otherwise Noted.
Devices
Part No.
LTP-254FFM-02
Source Color
Green & AlGaAs Red
Description
16 16 Dot Matrix Anode Row Cathode Column
9-105
DISPLAYS
Pin Connection
No
1 2 3 4 5 6 7 8 9 10 11 12
(Com.=Common, An.=Anode, Ca.= Cathode, Col.=Column) No
13 14 15 16 17 18 19 20 21 22 23 24
Connection
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
Connection
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
No
25 26 27 28 29 30 31 32 33 34 35 36
Connection
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
No
37 38 39 40 41 42 43 44 45 46 47 48
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
Internal Circuit Diagram
Absolute Maximum Ratings at Ta=25
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
75 100 13 0.17 5
AlGaAs Red
75 125 15 0.20 -35 -35 5 to +85 to +85
Unit
mW mA mA mA/ V
9-106
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 d VF IR IV-m
Symbol
IV P
Min.
Typ.
570 565 30 569 2.1 3.0
Max.
Unit
cd nm nm nm
Test Condition
IP=80mA 1/16 Duty IF=20mA IF=20mA IF=20mA IF=20mA IF=80mA VR=5V IF=10mA
2.6 3.7 100 2:1
V V A
AlGaAs Red 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 d VF IR IV-m
Symbol
IV P
Min.
Typ.
900 660 20 638 2.3 2.5
Max.
Unit
cd nm nm nm
Test Condition
IP=80mA 1/16 Duty IF=20mA IF=20mA IF=20mA IF=20mA IF=80mA VR=5V IF=10mA
2.9 3.1 100 2:1
V V A
Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision Internationale De L'Eclairage) eye-response curve.
9-107
DISPLAYS
Typical Electrical/Optical Characteristic Curves (25 Ambient Temperatrue Unless Otherwise Noted)
9-108

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