0.6" Four Digit Clock LED Displays LTC-637 Series Features Description The LTC-6000 series devices are designed for viewing distance of up to two meters and for using in instrument, test equipment, communication equipment, business machines, computers, micro processor...ect. DISPLAYS 0.6 inch (15.0mm) height character red or green color. Flexible to select both 12/24 hours and full feature. Continuous uniform segments. Wide angle, long distance viewing. Color filter provides high contrast. Low power requirements, high reliability and long life. Package Dimensions A. LTC-637C1X Series B.LTC-637D1 Series Notes:All dimensions are in millimeters (inches).Tolerance: 0.25mm (0.010") unless otherwise noted. 9-215 17-c637.p65 Page 215 2000/7/11, UE 07:41 Adobe PageMaker 6.5C/Win Devices Description Part No. LTC- Internal Circuit Diagram Bright Red Green Drive Mode Clock AM/PM Alarm Package Dimension 637C1P-12 637C1G-12 Common Cathode 12Hr AM/PM LOW A A 637C1P 637C1G Common Cathode 24Hr AM/PM LOW A B 637D1P-12 637D1G-12 Common Cathode 12Hr AM/PM LOW B A 637D1P 637D1G Common Cathode 24Hr AM/PM LOW B B Pin Connection Pin No. 9-216 LTL-637C1P-12/LTC-637D1P-12 LTC-637C1G-12/LTC-637D1G-12 LTL-637C1P/LTC-637D1P LTC-637C1G/LTC-637D1G 1 Common Cathode 1 Common Cathode 1 2 Common Cathode 2 Common Cathode 2 3 Cathode AM Cathode AM 4 Anode AM Anode AM 5 Anode PM Anode PM 6 Digit 1 Anode B Digit 1 Anode B 7 No Use Digit 1 Anode A, Digit 1 Anode G 8 No Use Digit 1 Anode D, Digit 1 Anode E 9 Digit 2 Anode E, Digit 1 Anode C Digit 2 Anode E, Digit 1 Anode C 10 Digit 2 Anode B, Digit 2 Anode G Digit 2 Anode B, Digit 2 Anode G 11 No Use No Use 12 Digit 3 Anode A, Digit 2 Anode D Digit 2 Anode C, Digit 2 Anode D 13 Digit 2 Anode A, Digit 2 Anode F Digit 2 Anode A, Digit 2 Anode F 14 No Use No Use 15 Digit 3 Anode A, Digit 3 Anode F Digit 3 Anode A, Digit 3 Anode F 16 Digit 3 Anode B, Digit 3 Anode G Digit 3 Anode B, Digit 3 Anode G 17 Digit 3 Anode C, Digit 3 Anode D Digit 3 Anode C, Digit 3 Anode D 18 Digit 3 Anode E, Digit 4 Anode E Digit 3 Anode E, Digit 4 Anode E 19 Digit 4 Anode B, Digit 4 Anode G Digit 4 Anode B, Digit 4 Anode G 20 Digit 4 anode C, Digit 4 Anode D Digit 4 Anode C, Digit 4 Anode D 21 Digit 4 Anode A, Digit 4 Anode F Digit 4 Anode A, Digit 4 Anode F 22 No Connection No Connection 23 No Connection No Connection 24 No Connection No Connection 25 No Connection No Connection 26 Common Cathode 2 Common Cathode 2 27 Anode AL Anode AL 28 Cathode AL Cathode AL 29 Common Cathode 1 Common Cathode 1 30 Anode UC, Anode LC Anode UC, Anode LC Internal Circuit Diagrams A. LTC-637C1P-12/637D1P-12/637C1G-12/637D1G-12 DISPLAYS B. LTC-637C1P/637D1P/637C1G/637D1G Absolute Maximum Ratings at Ta=25 Parameter Bright Red Green Unit 40 75 mW 60 100 mA 15 0.2 25 0.33 mA mA/ Power Dissipation Per Segment Peak forward Current Per Segment (1/10 Duty Cycle, 0.1ms Pulse Width) Continuous forward Current Per Segment Derating Linar From 25 Per segment Reverse Voltage Per Segment 5 Operating Temperature Range Storage Temperature Range Ma x. solder Temperature 260 -25 5 to +65 -25 to +65 V from 3 Seconds at 2 mm from The Case or Reflector Edge Electrical/Optical Characteristics at Ta=25 Bright Red Parameter Average Luminous Intensity Peak Emission Wavelength Symbol Min. Typ. IV 125 350 cd Test Condition IF=10mA 697 nm IF=20mA 90 nm IF=20mA d 638 nm IF=20mA V IF=20mA Forward Voltage, any Segment or D.P. VF Reverse Current, any Segment or D.P. IR 100 I V-m 2:1 Luminous Intensity Matching Ratio Unit P Spectral Line Half-Width Dominant Wavelength Max. 2.1 2.6 A VR=5V IF=10mA 9-217 Green Parameter Average Luminous Intensity Peak Emission Wavelength Symbol Min. Typ. IV 200 600 cd Test Condition IF=10mA 565 nm IF=20mA 30 nm IF=20mA d 569 nm IF=20mA V IF=20mA Forward Voltage, any Segment or D.P. VF Reverse Current, any Segment or D.P. IR 100 I V-m 2:1 Luminous Intensity Matching Ratio Unit P Spectral Line Half-Width Dominant Wavelength Max. 2.1 2.6 A 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. Typical Electrical/Optical Characteristic Curves (25 Ambient Temperature Unless Otherwise Noted) 9-218 17-c637.p65 Page 218 2000/7/11, UE 07:41 Adobe PageMaker 6.5C/Win