2 5 7 Single Color Dot Matrix LED Displays LTP-747 Series 757 Features Package Dimensions DISPLAYS 0.7 inch (17.22mm) matrix height Choices of four bright colors-green/yellow/red orange/ AlGaAs red. Low power requirement. 5 7 array with X-Y select. Compatible with usascll and ebcdic codes. Stackable vertically and horizontally. Choices of two matrix orientation. Cathode row, or cathode column. Easy mounting on P.C. board or sockets. Categorized for luminous intensity. Description The LTP-747/757 series are 0.7 inch (17.2mm) matrix height 5 7 dot matrix displays. The green, yellow, red orange and AlGaAs red displays have gray face and white dots. The AlGaAs red series devices utilize LED chips which are made from AlGaAs on a non-transparent GaAs substrate. The green series devices utilize LED chips which are made from GaP on a transparent GaP substrate. The yellow and red orange series utilize LED chips which are made from GaAsP on a transparent GaP substrate. Notes : All dimensions are in millimeters(inches). Tolerance : 0.25mm (0.010") unless otherwise noted. Devices Part No. Description Internal Circuit Diagram Green Yellow Red Orange LTP-747G LTP-747Y LTP-747E LTP-747C Anode Column, Cathode Row A LTP-757G LTP-757Y LTP-757E LTP-757C Cathode Column, Anode Row B AlGaAs Red Pin Connection P7x7.p65 Connection Pin No. LTP-747 LTP-757 1 Anode Column 1 Cathode Column 1 2 Cathode Row 3 Anode Row 3 3 Anode Column 2 Cathode Column 2 4 Cathode Row 5 Anode Row 5 5 Cathode Row 6 Anode Row 6 6 Cathode Row 7 Anode Row 7 7 Anode Column 4 Cathode Column 4 8 Anode Column 5 Cathode Column 5 9 Cathode Row 4 Anode Row 4 10 Anode Column 3 Cathode Column 3 11 Cathode Row 2 Anode Row 2 12 Cathode Row 1 Anode Row 1 Page 55 2000/7/11, UE 04:57 Adobe PageMaker 6.5C/Win 9-55 Internal Circuit Diagrams A. LTP-747 B. LTP-757 Absolute Maximum Ratings at Ta=25 Parameter Green Yellow Red Orange AlGaAs Red Unit Average Power Dissipation Per Dot 32 28 32 32 mW Peak Forward Current Per Dot (1/10 Duty Cycle, 0.1ms Pulse Width) 90 80 90 110 mA 11 0.15 8 0.11 11 0.15 14 0.19 mA mA/ 5 5 Average Forward Current Per Dot Derating Linear from 25 Per Dot Reverse Voltage Per Dot Operating Temperature Range -35 5 to +85 Storage Temperature Range Solder Temperature 1/16 Inch Below Seating Plane for 3 Seconds at 260 -35 to +85 V 5 Electrical/Optical Characteristics at Ta=25 LTP-747G/757G Parameter Average Luminous Intensity Peak Emission Wavelength Symbol Min. Typ. IV 630 2000 P Spectral Line Half-Width Dominant Wavelength d Forward Voltage, any Dot VF Reverse Current, any Dot IR Luminous Intensity Matching Ratio I V-m Max. Unit cd Test Condition IP=80mA 1/16 Duty 565 nm IF=20mA 30 nm IF=20mA 569 nm IF=20mA 2.1 2.6 V IF=20mA 3.0 3.7 V IF=80mA 100 2:1 A VR=5V IP=80mA 1/16 Duty 9-56 P7x7.p65 Page 56 2000/7/11, UE 04:57 Adobe PageMaker 6.5C/Win LTP-747Y/757Y Average Luminous Intensity Peak Emission Wavelength Symbol Min. Typ. IV 630 2000 P Spectral Line Half-Width Dominant Wavelength VF Reverse Current, any Dot IR Luminous Intensity Matching Ratio Unit cd Test Condition IP=80mA 1/16 Duty 585 nm IF=20mA 35 nm IF=20mA 588 d Forward Voltage, any Dot Max. nm IF=20mA 2.1 2.6 V IF=20mA 3.0 3.7 V IF=80mA 100 I V-m A VR=5V IP=80mA 1/16 Duty 2:1 LTP-747E/757E Parameter Average Luminous Intensity Peak Emission Wavelength Symbol Min. Typ. IV 630 2000 P Spectral Line Half-Width Dominant Wavelength VF Reverse Current, any Dot IR Luminous Intensity Matching Ratio Unit cd Test Condition IP=80mA 1/16 Duty 630 nm IF=20mA 40 nm IF=20mA 621 d Forward Voltage, any Dot Max. nm IF=20mA 2.0 2.6 V IF=20mA 2.6 3.4 V IF=80mA 100 I V-m A DISPLAYS Parameter VR=5V IP=80mA 1/16 Duty 2:1 LTP-747C/757C Parameter Average Luminous Intensity Peak Emission Wavelength Symbol Min. Typ. IV 5000 9000 P Spectral Line Half-Width Dominant Wavelength d Forward Voltage, any Dot VF Reverse Current, any Dot IR Luminous Intensity Matching Ratio I V-m Max. Unit cd Test Condition IP=80mA 1/16 Duty 660 nm IF=20mA 35 nm IF=20mA 638 nm IF=20mA 1.8 2.4 V IF=20mA 2.0 3.1 V IF=80mA 100 2:1 A VR=5V IP=80mA 1/16 Duty Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision Internationale De L'Eclairage) eye-response curve. 9-57 P7x7.p65 Page 57 2000/7/11, UE 04:57 Adobe PageMaker 6.5C/Win Typical Electrical/Optical Characteristic Curves (25 Ambient Temperatrue Unless Otherwise Noted) 9-58 P7x7.p65 Page 58 2000/7/11, UE 04:58 Adobe PageMaker 6.5C/Win