HDSP-078X HP | Alldatasheet

Document overview

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Technical content

Features

  • Three Character Options Numeric, Hexadecimal, Over Range
  • Three Colors High Efficiency Red, Yellow, High Performance Green
  • 4 x 7 Dot Matrix Character
  • High Efficiency Red, Yellow and High Performance Green
  • Two High Efficiency Red Options Low Power, High Brightness
  • Performance Guaranteed Over Temperature
  • High Temperature Stabilized
  • Memory Latch/Decoder/ Driver TTL Compatible
  • Categorized for Luminous Intensity

Description

These standard solid state displays have a 7.4 mm (0.29 inch) dot matrix character and an on-board IC with data memory latch/ decoder and LED drivers in a glass/ceramic package. The hermetic HDSP-078x,-079x/ -088x displays utilize a solder glass frit seal. The HDSP-098X displays utilize an epoxy glass-to- ceramic seal. The numeric devices decode posi- tive BCD logic into characters “0-9,” a “–” sign, decimal point, and a test pattern. The hexadecimal devices decode Glass/Ceramic Numeric and Hexadecimal Displays for Industrial Applications Technical Data positive BCD logic into 16 characters, “0-9, A-F.” An input is provided on the hexadecimal devices to blank the display (all LEDS off) without losing the contents of the memory. The over range device displays “± 1” and right hand decimal point and is typically driven via external switching transistors.

Optical Characterstics at TA = 25°C, VCC = 5.0 V Device Description Symbol Min. Typ. Max. Unit HDSP-078x Series Luminous Intensity per LED I V 65 140 µcd (Digit Average)[3,4] Peak Wavelength λPEAK 635 nm Dominant Wavelength[5] λd 626 nm HDSP-079x Series Luminous Intensity per LED I V 260 620 µcd (Digit Average)[3,4] Peak Wavelength λPEAK 635 nm Dominant Wavelength[5] λd 626 nm HDSP-088x Series Luminous Intensity per LED I V 215 490 µcd (Digit Average)[3,4] Peak Wavelength λPEAK 583 nm Dominant Wavelength[5,6] λd 585 nm HDSP-098x Series Luminous Intensity per LED I V 298 1100 µcd (Digit Average)[3,4] Peak Wavelength λPEAK 568 nm Dominant Wavelength λd 574 nm Absolute Maximum Ratings Description Symbol Min. Max. Unit Storage Temperature, Ambient HDSP-078x/-079x/-088x T S -65 +125 °C HDSP-098x -55 +100 Operating Temperature, Ambient [1] TA -55 +100 °C Supply Voltage[2] VCC -0.5 +7.0 V Voltage Applied to Input Logic, dp and Enable Pins V I, VDP, VE -0.5 V CC V Voltage Applied to Blanking Input[2] VR -0.5 V CC V Wave Solder Temperature at 1.59 mm (0.063 inch) 250 °C below Body, max. 3 seconds Notes: 1. The nominal thermal resistance of a display mounted in a socket that is soldered onto a printed circuit board is RθJA =5 0°C/W/device. The device package thermal resistance is R θJ-PIN = 15°C/W/device. The thermal resistance device pin-to- ambient through the PC board should not exceed 35 °C/W/device for operation up to T A = +100°C. 2. Voltage values are with respect to device ground, pin 6. 3. These displays are categorized for luminous intensity with the intensity category designated by a letter code located on the back of the display package. Case temperature of the device immediately prior to the light measurement is equal to 25 °C. Recommended Operating Conditions Description Symbol Min. Nom. Max. Unit Supply Voltage[2] VCC 4.5 5.0 5.5 V Operating Temperature, Ambient [1] TA –55 +100 °C Enable Pulse Width t W 100 nsec Time Data Must Be Held Before Positive t SETUP 50 nsec Transition of Enable Line Time Data Must Be Held After Positive t HOLD 50 nsec Transition of Enable Line Enable Pulse Rise Time t TLH 1.0 msec

Electrical/Optical Characteristics TA = –55°C to +100°C Description Symbol Test Conditions Min. Typ. [7] Max. Unit Supply HDSP-078x Series I CC VCC = 5.5 V 78 105 mA Current HDSP-079x/-088x/ Characters “5.” or -098x Series “B” displayed Power HDSP-078x Series P T VCC = 5.5 V 390 573 mW Dissipation HDSP-079x/-088x/ Characters “5.” or -098x Series “B” displayed Logic, Enable and Blanking V IL VCC = 4.5 V 0.8 V Low-Level Input Voltage Logic, Enable High-Level Input V IH 2.0 V Voltage Blanking High-Voltage; Display V BH 2.3 V Blanked Logic and Enable Low-Level I IL VCC = 5.5 V –1.6 mA Input Current Blanking Low-Level Input Current I BL VIL = 0.4 V –10 µA Logic, Enable and Blanking I IH VCC = 5.5 V +40 µA High-Level Input Current V IH = 2.4 V Weight 1.0 gm Leak Rate 5 x 10-8 cc/sec 120 175 690 963 Notes: 4. The luminous intensity at a specific operating ambient temperature, Iv(TA), may be approximated from the following exponential equation: I v(TA)=I v(25°C) e[k(T -25 °C)]. Device K HDSP-078 Series –0.0131/ °C HDSP-079x Series HDSP-088x Series –0.0112/ °C HDSP-098x Series –0.0104/ °C 5. The dominant wavelength, λd, is derived from the CIE chroma- ticity diagram and represents the single wavelength which defines the color of the device. 6. The HDSP-088X and HDSP-098X series devices are categor- ized as to dominant wavelength with the category designated by a number on the back of the display package. 7. All typical values at VCC = 5.0 V and TA = 25°C. Operational Considerations Electrical These devices use a modified 4 x 7 dot matrix of light emitting diodes to display decimal/ hexadecimal numeric informa- tion. The high efficiency red and yellow displays use GaAsP/GaP LEDs and the high performance green displays use GaP/GaP LEDs. The LEDs are driven by constant current drivers, BCD information is accepted by the display memory when the enable line is at logic low and the data is latched when the enable is at logic high. Using the enable pulse width and data setup and hold times listed in the Recommended Operating Conditions allows data to be clocked into an array of displays at a 6.7 MHz rate. The decimal point input is active low true and this data is latched into the display memory in the same fashion as the BCD data. The decimal point LED is driven by the on-board IC. The blanking control input on the hexadecimal displays blanks (turns off) the displayed information without disturbing the contents of display memory . The display is blanked at a minimum threshold level of 2.0 volts. When blanked, the display standby power is nominally 250 mW at T A = 25°C. The ESD susceptibility of the IC devices is Class A of MIL-STD- 883 or Class 2 of DOD-STD-1686 and DOD-HDBK-263. A

These displays are hermetically sealed for use in environments that require a high reliability device. These displays are designed and tested to meet a helium leak rate of 5x1 0 -8 cc/sec. These displays may be mounted by soldering directly to a printed circuit board or insertion into a socket. The lead-to-lead pin spacing is 2.54 mm (0.100 inch) and the lead row spacing is 15.24 mm (0.600 inch). These displays may be end stacked with 2.54 mm (0.100 inch) spacing between outside pins of adjacent displays. Sockets such as Augat 324-AG2D (3 digits) or Augat 508-AG8D (one digit, right angle mounting) may be used. The primary thermal path for power dissipation is through the device leads. Therefore, to insure reliable operation up to an ambient temperature of +100°C, it is important to maintain a base-to-ambient thermal resistance of less than 35°C watt/device as measured on top of display pin 3. For further information on soldering and post solder cleaning, see Application Note 1027, Soldering LED Components. Preconditioning These displays are 100% pre- conditioned by 24 hour storage at 125°C, at 100°C for the HDSP- 098x Series. Contrast Enhancement These display devices are designed to provide an optimum ON/OFF contrast when placed behind an appropriate contrast enhancement filter. For further information on contrast enhancement, see Application Note 1015, Contrast Enhancement for LED Displays. Over Range Display The over range devices display “± 1” and decimal point. The character height and package configuration are the same as the numeric and hexadecimal devices. Character selection is obtained via external switching transistors and current limiting resistors. Absolute Maximum Ratings Description Symbol Min Max Unit Storage Temperature, Ambient T S –65 +125 °C Operating Temperature, Ambient T A –55 +100 °C Forward Current, Each LED I F 10 mA Reverse Voltage, Each LED V R 5V

Figure 3. Typical Driving Circuit. 0: Line switching transistor in Figure 7 cutoff. 1: Line switching transistor in Figure 7 saturated.

Bin Category Min. (mcd) Max. (mcd) Condition A 0.065 0.102 B 0.085 0.138 C 0.114 0.200 D 0.165 0.300 E 0.260 0.488 F 0.403 0.756 G 0.625 1.172 Intensity Bin Limits for HDSP-078x Series Luminous Intensity per LED. V DD @ 5.0 V Bin Category Min. (mcd) Max. (mcd) Condition A 0.22 0.34 B 0.28 0.46 C 0.38 0.66 D 0.55 0.99 E 0.82 1.54 F 1.27 2.39 Intensity Bin Limits for HDSP-088x Series Luminous Intensity per LED. V DD @ 5.0 V

Electrical Characteristics

TA = –55°C to +100°C Device Description Symbol Test Conditions Min Typ Max Unit HDSP-0783 Power Dissipation P T IF = 2.8 mA 72 mW IF = 8 mA 224 282 Forward Voltage per LED V F IF = 2.8 mA 1.6 V IF = 8 mA 1.75 2.2 HDSP-0883 Power Dissipation P T IF = 8 mA 237 282 mW (All LEDs Illuminated) Forward Voltage per LED V F 1.90 2.2 V HDSP-0883 Power Dissipation P T IF = 8 mA 243 282 mW (All LEDs Illuminated) Forward Voltage per LED V F 1.85 2.2 V (All LEDs Illuminated) Bin Category Min. (mcd) Max. (mcd) Condition E 0.260 0.488 F 0.403 0.756 G 0.625 1.172 H 0.969 1.820 Intensity Bin Limits for HDSP-079x Series Luminous Intensity per LED. V DD @ 5.0 V Bin Category Min. (mcd) Max. (mcd) Condition C 0.30 0.52 D 0.43 0.79 E 0.65 1.18 F 0.97 1.76 G 1.45 2.63 Intensity Bin Limits for HDSP-098x Series Luminous Intensity per LED. V DD @ 5.0 V

Intensity Range (nm) Color Bin Min. Max. Yellow 1 581.50 585.00 2 584.00 587.50 3 586.50 590.00 Green 1 570.00 574.00 2 573.00 577.00 3 576.00 580.00 Note: Bin categories are established for classification of products. Products may not be available in all bin categories. Please consult your local Agilent Technologies representative. Color Bin Limits (Dominant Wavelength) www.agilent.com/semiconductors For product information and a complete list of distributors, please go to our web site. For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (916) 788-6763 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 6756 2394 India, Australia, New Zealand: (+65) 6755 1939 Japan: (+81 3) 3335-8152 (Domestic/Interna- tional), or 0120-61-1280 (Domestic Only) Korea: (+65) 6755 1989 Singapore, Malaysia, Vietnam, Thailand, Philippines, Indonesia: (+65) 6755 2044 Taiwan: (+65) 6755 1843 Data subject to change. Copyright © 2004 Agilent Technologies, Inc. Obsoletes 5964-6390E July 14, 2004 5988-2261EN