3 16 16 Multicolor Dot Matrix LED Displays LTP-254FFM-02 Series Features DISPLAYS 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. Source Color Description LTP-254FFM-02 Green & AlGaAs Red 16 16 Dot Matrix Anode Row Cathode Column 9-105 Pin Connection No (Com.=Common, An.=Anode, Ca.= Cathode, Col.=Column) Connection No Connection No Connection No Connection 1 Com. An. Row 5 13 Com. An. Row 3 25 Com. An. Row 15 37 Com. An. Row 16 2 Ca. Column 8 Green 14 Ca. Column 5 Red 26 Ca. Column 14 Green 38 Ca. Column 16 Green 3 Ca. Column 1 Green 15 Ca. Column 7 Red 27 Ca. Column 15 Red 39 Ca. Column 15 Green 4 Ca. Column 2 Red 16 Ca. Column 8 Red 28 Ca. Column 14 Red 40 Ca. Column 16 Red 5 Ca. Column 7 Green 17 Ca. Column 6 Green 29 Ca. Column 13 Red 41 Com. An. Row 2 6 Ca. Column Row 9 18 Ca. Column 6 Red 30 Ca. Column 13 Green 42 Ca. Column 12 Green 7 Ca. Column 4 Green 19 Ca. Column 5 Green 31 Ca. Column 11 Red 43 Com. An. Row 8 8 Com. An. Row 10 20 Ca. Column 2 Green 32 Ca. Column 10Green 44 Ca. Column 1 Red 9 Com. An. Row 11 21 Ca. Column 4 Red 33 Ca. Column 9 Green 45 Com. An. Row 7 10 Com. An. Row 12 22 Ca. Column 3 Green 34 Ca. Column 10 Red 46 Com. An. Row 6 11 Ca. Column 1 Red 23 Ca. Column 3 Red 35 Ca. Column 12 Red 47 Ca. Column 11 Green 12 Com. An. Row 13 24 Com. An. Row 14 36 Com. An. Row 14 48 Com. An. Row 1 Internal Circuit Diagram Absolute Maximum Ratings at Ta=25 Green AlGaAs Red Unit Power Dissipation Per Dot Parameter 75 75 mW Peak Forward Current Per Dot 100 125 mA Average Forward Current Per Dot Derating Linear from 25 Per Dot 13 0.17 15 0.20 mA mA/ Reverse Voltage Per Dot Operating Temperature Range -35 5 to +85 Storage Temperature Range -35 to +85 5 Solder Temperature 1/16 Inch Below Seating Plane for 3 Seconds at 260 9-106 V Electrical Optical Characteristics at Ta=25 Green Average Luminous Intensity Peak Emission Wavelength Symbol Min. Max. 570 IV P Spectral Line Half-Width Dominant Wavelength Typ. cd IP=80mA 1/16 Duty nm IF=20mA 30 nm IF=20mA nm IF=20mA 2.1 2.6 V IF=20mA 3.0 3.7 V IF=80mA Forward Voltage, and Dot VF Reverse Current, and Dot IR 100 I V-m 2:1 Luminous Intensity Matching Ratio Test Condition 565 569 d Unit A VR=5V IF=10mA AlGaAs Red Parameter Average Luminous Intensity Peak Emission Wavelength Symbol IV P Spectral Line Half-Width Dominant Wavelength d Min. Typ. Max. 900 cd Test Condition IP=80mA 1/16 Duty 660 nm IF=20mA 20 nm IF=20mA 638 nm IF=20mA 2.3 2.9 V IF=20mA 2.5 3.1 V IF=80mA Forward Voltage, and Dot VF Reverse Current, and Dot IR 100 I V-m 2:1 Luminous Intensity Matching Ratio Unit A DISPLAYS Parameter VR=5V IF=10mA 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 Typical Electrical/Optical Characteristic Curves (25 Ambient Temperatrue Unless Otherwise Noted) 9-108