ss a3 INCH RED ee SEVEN SEGMENT sta snes | COMPONENTS a co Features @ 5082-7750 Common Anode Lett Hand D.P. 5082-7751 Common Anode Right Hand D.P. 5082-7756 Polarity and Overflow Indicator Universal Pinout Right Hand D.P. e 5082-7760 Common Cathode Right Hand D.P. e LARGE DIGIT Viewing Up to 6 Meters (19.7 Feet) EXCELLENT CHARACTER APPEARANCE Description Continuous Uniform Segments _ ; ; Wide Viewing Angle The 5082-7750/7760 series are large 10.92mm (.43 in.) High Contrast GaAsP LED seven segment displays. Designed for viewing distances up to 6 meters (19.7 feet), these single IC COMPATIBLE digit displays provide a high contrast ratio and a wide viewing angle. STANDARD 7.62mm (.3 in.) DIF These devices utilize a standard 7.62mm (.3 in.) dual-in- LEAD CONFIGURATION line package configuration that permits mounting on PC PC Board or Standard Socket Mountable boards or in standard IC sockets. Requiring a low forward voitage, these displays are inherently IC compatible, CATEGORIZED FOR LUMINOUS INTENSITY allowing for easy integration into electronic instru- Assures Uniformity of Light Output from mentation, point of sale terminals, TVs, radios, and digital Unit to Unit within a Single Category clocks. Devices No, 5082- 7780 7781 =1760 Note: Universal pinout brings the anode and cathode of each segments LED out to separate pins. See internal diagram C. 61Package Dimensions 7.01 (.276) }+-- | 10 1p Waa a a 2 * pe 3 ae 3+ 4 12 | ape +] 11 10,92 (430) LH.DP. 5 ] I 10 | ~ 6 ' +Hempolic+ 9 . 3.18 (125) 7 OTe Note 4 | || Note 4 - 5.08 {.200} 6.35 (.250) 4 6.38 1.250) A LUMINOUS INTENSITY CATEGORY \. 1.52 + \, (060) 12.70 (.500) - - Max. "| 6.35 (.2 { iy sol 19.05 + 0.25 16 ( 160) (.750 + .010} 4.06 (.160} MIN. po >|| 0.25 (.010) 7.62 {.300) } DATA CODE END VIEW SIDE VIEW NOTES: 7.01 (.276) + 10.92 {.430) 1 13 2 W 3 1 19.05 + 0.25 (.750 + 010) 44" 10 5 Q | 6 8 3.18 (.125) { 7 R.4.D.P. wore 5.21 (.205) B.D Cc FRONT VIEW Hee FUNCTION FORE 1.02 ee (.040) iN 4 8 & 0 t : A 7780 s7IS1 7756 F760 SS 40 | GATHODEs. | CATHODE. | CATHODEd | ANODES ~) (20 | CATHODEL | (CATHODE |) ANODE-d ANODE-+ 3.) ANODER! ANODEI3! | NO PIN CATHODE (6 4 NO:PEN: NO-PIN: CATHODE- |L-NO-PIN f8.) NO'PIN NO PIN | CATHODE. | 'NOPIN _@ | CATHODEdp | NOCONN, 5! | ANODE-s NO.CONN:[8) oy | CATHODE. | CATHQDE | ANODE-s ANODES | CATHODE-d | CATHODE-d) | ANODEdp |) ANODE d. "| 2.54 (.100) @ = NOCONNJS! | CATHODE dp CATHODE dp ANODE dp =| ~ 10. GATHODE-c [| CATHODE | CATHODE-b | ANODE- : 11) CATHODE'g: | GATHODE:9 CATHODEs -ANODE-g | | Te NO-PIN NO PIN NO PIN NO. PIN (13 | CATHODEb | CATHODE | ANODE-s ANODE-bo 5) (44) ANODELS! ANODE?) ANODE-b. CATHODE!S) 1. Dimensions in millimeters and (inches). 2. All untoleranced dimensions are for reference only. 3. 4, 5. 6. Internal Circuit Diagram Absolute Maximum Ratings DC Power Dissipation Per Segment or p.p." (Ta=28C) Operating Temperature Range Storage Temperature Range Peak Forward Current Per Segment or D.P(T,=25C) DC Forward Current Per Segment or D.P.(!'2) (T4=25 C) Reverse Voltage Per Segment or D.P. Lead Soldering Temperature . Redundant anodes. Unused dp position. . See Internal Circuit Diagram. . Redundant cathodes. eee etree 42mw 20C to +85C 20C to +85C 230C for 3 Sec [1.59mm (1/16 inch) below seating plane"? Notes: 1. See power derating curve (Fig.2). 2. Derate average current from 50C at 0.43mA/C per segment. 3. See Maximum Toler- able Segment Peak Current vs. Pulse Duration curve, (Fig. 1). 4. Clean only in water, isopropanol, ethanol, Freon TF or TE (or equivalent) and Genesolv DI-15 or DE-15 (or equivalent) 62Electr ical /Optical Char acteristics at T,=25C Description Luminous Intensity/Segment (Digit Average). |. | Peak Peak Wavelength _ : Dominant ant Wavelength | @ fe Forward Vo Voltage, any. Segment |_Reverse Current, any Segment or D. Rise and Fall Time Temper ature Coefficient of Forward Temperature Coefficient of Luminot [fare owe. Ne tes: _ 1. The digits are categorized for luminous intensity with the intensity category designated by a letter located on the right hand side of the package. . The dominant wavelength, Au, is derived from the CIE Chromaticity Diagram and is that single wavelength which defines the color of the device 2. 3. Time for a 10% - 90% change of light intensity for step change in current, 4. Temperature coefficient of luminous intensity ly/C is determined by the formula:ly., = Operational Considerations ELECTRICAL The 5082-7750/7760 series display is composed of eight light emitting diodes optically magnified to form seven individual segments and decimal point. The diodes are made of GaAsP (Gallium Arsenide Phosphide) junction on a GaAs substrate. Diode turn-on voltage is approximately 1.55 volts and typical forward diode resistance is 5 ohms. For strobing at peak currents a user should take this forward resistance into account. Typical forward voltage may be scaled from Figure 4 or calculated from the following formula: Ve = 1.55V + (59, x IpEAK) Figure 1 relates refresh rate, f, and pulse duration, tp, toa ratio which defines the maximum desirable operating peak current as a function of derated dc current, lp max/Ipe max. TO most effectively utilize Figure 1, per- form the following steps: 1. Determine desired duty factor. Example: Four digit display, duty factor = 1/4. 2. Determine desired refresh rate, f. Use duty factor to calculate pulse duration, tp. Note: ftp = Duty Factor Example: f = 1kHz; tp = 250 usec. 3. Enter Figure 1 at the calculated tp. Move vertically to the refresh rate line and then record the corresponding value of Ip max/Ipc MAx. Example: At tp = 250 usec anf f=1kHz, Ip max/Ipc Max = 3.0. 4. From Figure 2, determine the value for Ipc Max. Note: Ipc max is derated above T,=50C Example: At Ta=70C, Ipc Max = 16.4mA. 5. Calculate lp max from lp max/Ipc max ratio and calculate Iavg from Ip and duty factor. Example: Ip=(3.0) (16.4mA) = 49.2mA peak lave=(1/4) (49.2mA) = 12.3mA average. The above calculations determine the maximum tolerable strobing conditions. Operation at a reduced peak current or duty factor is suggested to help insure even more reliable operation. tas ec (.982) [a= 28C] Refresh rates of 1kHz or faster provide the most efficient operation reulting in the maximum possible time average luminous intensity. This display may be operated at various peak currents (see Figure 3). Light output for a selected peak current may be caiculated from the 20mA value using the following formula: ( Wy = (lv 20ma) 74 ( IE we PEAK \ 20mA Where: ly = Luminous Intensity at desired lava lv 20ma = Luminous Intensity at Ip = 20mA lave = Average Forward Current per seg- ment = (lpeax X Duty Factor) nlpeak = Relative Efficiency Factor at Peak Operating Forward Current from Figure 3. CONTRAST ENHANCEMENT The 5082-7750/7760 series display may be effectively filtered using one of the following filter products: Homalite H 100-1605; Panelgraphic Ruby Red 60 or Dark Red 63; Plexiglas 2423; 3M Brand Light Control Film for daylight viewing. MECHANICAL The 5082-7750/7760 series devices are constructed utilizing a lead frame in a standard DIP package. The individual packages may be close-packed on 12.7mm (.5 in.) centers on a PC board. Also, the larger character height allows other character spacing options when desired. The lead frame has an integral seating plane which will hold the package approximately 1.52mm (.060 in.) above the PC board during standard soldering and flux removal operation. To optimize device performance, new materials are used that are limited to certain solvent materials for flux rernoval. It is recommended that only mixtures of Freon and alcohol be used for post solder vapor cleaning processes, with an immersion time in the vapors up to two minutes maximum. Suggested products are Freon TF, Freon TE, Genesolv DI-15 and Genesolv DE- 15. tsoproponal, Ethanol or water may also be used for cleaning operations.loc max ~ MAXIMUM DC CURRENT mA Figure 2. Ip FORWARD CURRENT PER SEGMENT mA RATIO OF MAXIMUM OPERATING PEAK -CURRENT TO TEMPERATURE DERATED MAXIMUM DC CURRENT Ipeak MAX be max 20 aR anunod 4 OPERATION IN THIS REGION REQUIRES TEMPERATURE DERATING OF oc max. fF ~ DC OPERATION 1 10 100 1000 10000 tp - PULSE DURATION - SEC Figure 1. Maximum Tolerable Peak Current vs. Pulse Duration, 25 42 24 40 = 22 37 20 33COI a 18 30 = 6 16 2 8 14 23 = 12 2 5 10 1 & = 8 13 1 z 6 9 = 4 6 ae 2 3 0 0 0 10 20 30 40 50 60 70 808590 Tax AMBIENT TEMPERATURE "C Maximum Allowable DC Current and DC Power Dissipation per Segment as a Function of Ambient Temperature. oO 4 B 1.2 1.6 2.0 2.4 28 32 Ve - FORWARE: VOLTAGE V Figure 4. Forward Current versus Forward Voltage. 11 t > 3 2 a 10 8 = & i w 2 = <9 : s a a e Q N 3 S sk x o 2 7 0 10 20 30 40 50 peak PEAK SEGMENT CURRENT mA Figure 3. Relative Efficiency (Luminous Intensity per Unit Current) versus Peak Current per Segment. LAMBERTIAN OISTRIBUTIGN~ Figure 5. Normalized Angular Distrubution of Luminous Intensity. 64