Devices
Part Number Front
HDSP- Color Description View
0781 High-Efficiency Red Numeric, Right Hand DP A
0782 Low Power Numeric, Left Hand DP B
0783 Over Range ±1 C
0784 Hexadecimal D
0791 High-Efficiency Red Numeric, Right Hand DP A
0792 High Brightness Numeric, Left Hand DP B
0794 Hexadecimal D
0881 Yellow Numeric, Right Hand DP A
0883 Over Range ±1 C
0884 Hexadecimal D
0981 High-Performance Numeric, Right Hand DP A
0983 Green Over Range ±1 C
0984 Hexadecimal D
Features
•  Three character options 
Numeric, hexadecimal, over range
•  Three colors; 
High Eciency Red, Yellow, High Performance Green
•  4 x 7 dot matrix character
•  Two high eciency 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 positive BCD logic into char-
acters “0-9,” a “–” sign, decimal point, and a test pattern. 
The hexadecimal devices decode positive BCD logic into 
16 characters, “0-9, A-F.” An input is provided on the hexa-
decimal devices to blank the display (all LEDS o) without 
losing the contents of the memory.
The  over  range  device  displays  “±1”  and  right  hand 
decimal point and is typically driven via external switch-
ing transistors.
HDSP-078x, HDSP-079x, HDSP-088x, HDSP-098x
Glass/Ceramic Numeric and Hexadecimal Displays
for Industrial Applications
Data Sheet
2
Package Dimensions
13.5
(0.53)
3.0
(0.12)
COLOR
CODE(3)
LUMINOUS
INTENSITY
CATEGORY
DATE CODE
COUNTRY
CODE
TYP.
0-10°
PIN 1 KEY
4.8
(0.19)
10.2
(0.400)
5.6
(0.22)
1.5
(0.06)
7.4
(0.29)
5°
MAX.
PIN
1
2
3
4
5
6
7
8
NUMERIC
Input 2
Input 4
Input 8
Decimal Point
Latch Enable
Ground
VCC
Input 1
HEXADECIMAL
Input 2
Input 4
Input 8
Blanking Control
Latch Enable
Ground
VCC
Input 1
NOTES:
1. DIMENSIONS IN MILLIMETERS AND (INCHES).
2. UNLESS OTHERWISE SPECIFIED, THE TOLERANCE
ON ALL DIMENSIONS IS ± 0.38 mm (± 0.015 INCH).
3. DIGIT CENTER LINE IS ± 0.25 mm (± 0.01 INCH)
FROM PACKAGE CENTER LINE.
4. COLOR CODE FOR HDSP-088X/-098X SERIES.
REAR VIEW SIDE VIEW END VIEW
10.2
(0.400)
15.2
(0.600)
HDSP
XXXX
YYWW
SYYWW
5
X Z
6 7 8
4 3 2 1
13.5
(0.53)
3.6
(0.14)
4.8
(0.19)
4.3
(0.17)
0.3 ± 0.08
(0.012 ± 0.003)
TYP.
2.5 ± 0.13
(0.100 ± 0.005)
TYP.
0.5 ± 0.08
(0.020 ± 0.003)
TYP.
SEATING
PLANE
1.3
(0.050)
3.8
(0.15) 1.5
(0.06) 3.4
(0.135)
2.8
(0.11)
10.2
(0.400)
5.6
(0.22)
1.5
(0.06)
7.4
(0.29)
5°
MAX.
13.5
(0.53)
4.8
(0.19)
10.2
(0.400)
1.5
(0.06)
7.4
(0.29)
5°
MAX.
SEATING
PLANE
FUNCTION
FRONT VIEW A FRONT VIEW B FRONT VIEW D
3
Figure 1. Timing diagram.
Figure 2. Block diagram.
tSETUP tHOLD
tW
tTLH
DATA INPUT
(LOW LEVEL DATA)
1.5 V 1.5 V
1.5 V 1.5 V
1.5 V 1.5 V
10%
90%
DATA INPUT
(HIGH LEVEL DATA)
ENABLE
INPUT
LATCH
MEMORY
4
6
4 DP
DP
3 X8
2 X4
1 X2
8
5
7
BLANKING(3)
CONTROL
GROUND
DP(2)
INPUT
LOGIC
ENABLE
VCC
X1
MATRIX
DECODER
LED
MATRIX
DRIVER
LED
MATRIX
TRUTH TABLE
X8
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X4
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X2
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X1
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
BCD DATA[1]
NUMERIC
DECIMAL PT.[2] ON
OFF
LOAD DATA
LATCH DATA
DISPLAY–ON
DISPLAY–OFF
VDP = L
VDP = H
VE= L
VE= H
VB= L
VB= H
ENABLE[1]
BLANKING[3]
(BLANK)
(BLANK)
••••
(BLANK)
(BLANK)
HEXADECIMAL
NOTES:
1. H = LOGIC HIGH; L = LOGIC LOW. WITH THE ENABLE INPUT AT
LOGIC HIGH, CHANGES IN BCD INPUT LOGIC LEVELS HAVE NO
EFFECT UPON DISPLAY MEMORY, DISPLAYED CHARACTER, OR DP.
2. THE DECIMAL POINT INPUT, DP, PERTAINS ONLY TO THE
NUMERIC DISPLAYS.
3. THE BLANKING CONTROL INPUT, B, PERTAINS ONLY TO THE
HEXADECIMAL DISPLAYS. BLANKING INPUT HAS NO EFFECT
UPON DISPLAY MEMORY.
4
Absolute Maximum Ratings
Description Symbol Min. Max. Unit
Storage Temperature, Ambient
HDSP-078x/-079x/-088x TS -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 VI, VDP, VE -0.5 VCC V
Voltage Applied to Blanking Input[2] VR -0.5 VCC V
Soldering Temperature [1.59 mm (0.063 inch) Below Body]
Solder Dipping, max 5 seconds 260 °C
Wave Soldering, max. 3 seconds 250
Recommended Operating Conditions
Description Symbol Min. Nom. Max. Unit
Supply Voltage[2] V
CC 4.5 5.0 5.5 V
Operating Temperature, Ambient[1] T
A -55 +100 °C
Enable Pulse Width tW 100 nsec
Time Data Must Be Held Before Positive Transition of Enable Line tSETUP 50 nsec
Time Data Must Be Held After Positive Transition of Enable Line tHOLD 50 nsec
Enable Pulse Rise Time tTLH 1.0 msec
Optical Characterstics at TA = 25°C, VCC = 5.0 V
Device Description Symbol Min. Typ. Max. Unit
HDSP-078x Series Luminous Intensity per LED IV 65 140 µcd
(Digit Average)[3,4]
Peak Wavelength lPEAK 635 nm
Dominant Wavelength[5] ld 626 nm
HDSP-079x Series Luminous Intensity per LED IV 260 620 µcd
(Digit Average)[3,4]
Peak Wavelength lPEAK 635 nm
Dominant Wavelength[5] ld 626 nm
HDSP-088x Series Luminous Intensity per LED lV 215 490 µcd
(Digit Average)[3,4]
Peak Wavelength lPEAK 583 nm
Dominant Wavelength[5,6] ld 585 nm
HDSP-098x Series Luminous Intensity per LED IV 298 1100 µcd
(Digit Average)[3,4]
Peak Wavelength lPEAK 568 nm
Dominant Wavelength ld 574 nm
Notes:
1. The nominal thermal resistance of a display mounted in a socket that is soldered onto a printed circuit board is RqJA = 50°C/W/device. The device
package thermal resistance is RqJ-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 TA = +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.
5
Electrical/Optical Characteristics
TA = –55°C to +100°C
Description Symbol Test Conditions Min. Typ.[7] Max. Unit
Supply HDSP-078x Series ICC VCC = 5.5 V 78 105 mA
Current HDSP-079x/-088x/-098x Series Characters “5.” or 120 175
“B” displayed
Power HDSP-078x Series PT VCC = 5.5 V 390 573 mW
Dissipation HDSP-079x/-088x/-098x Series Characters “5.” or 690 963
“B” displayed
Logic, Enable and Blanking Low-Level VIL VCC = 4.5 V 0.8 V
Input Voltage
Logic, Enable High-Level Input Voltage VIH 2.0 V
Blanking High-Voltage; Display Blanked VBH 2.3 V
Logic and Enable Low-Level Input Current IIL VCC = 5.5 V –1.6 mA
Blanking Low-Level Input Current IBL VIL = 0.4 V –10 µA
Logic, Enable and Blanking High-Level IIH VCC = 5.5 V +40 µA
Input Current VIH = 2.4 V
Weight 1.0 gm
Leak Rate 5 x 10-8 cc/sec
Notes:
4. The luminous intensity at a specific operating ambient temperature,
Iv(TA), may be approximated from the following exponential equation:
Iv(TA) = Iv(25°C) e[k(TA-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, ld, is derived from the CIE chromaticity dia-
gram and represents the single wavelength which defines the color of
the device.
6. The HDSP-088X and HDSP-098X series devices are categorized 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  modied  4 x 7  dot  matrix  of  light 
emitting diodes to display decimal/hexadecimal numeric 
information. The high eciency red and yellow displays 
use  GaAsP/GaP  LEDs  and  the  high  performance  green 
displays use GaP/GaP LEDs. The LEDs are driven by con-
stant  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 o) the displayed information without dis-
turbing 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 TA = 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.
6
Mechanical
These displays are hermetically sealed for use in environ-
ments that require a high reliability device. These displays 
are  designed  and  tested  to  meet  a  helium  leak  rate  of 
5 x 10-8 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 Com-
ponents.
Preconditioning
These  displays  are  100%  preconditioned  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 appro-
priate contrast enhancement lter. 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 conguration 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 TS –65 +125 °C
Operating Temperature, Ambient TA –55 +100 °C
Forward Current, Each LED IF 10 mA
Reverse Voltage, Each LED VR 5 V
7
Package Dimensions
Luminous Intensity per LED
(Digit Average) at TA = 25°C
Device Test Conditions Min. Typ. Units
HDSP-0783 IF = 2.8 mA 65 140 µcd
IF = 8 mA 620 µcd
HDSP-0883 IF = 8 mA 215 490 µcd
HDSP-0983 IF = 8 mA 298 1100 µcd
Recommended Operating Conditions
VCC = 5.0 V
Forward Current Resistor Value
Device Per LED, mA R1 R2 R3
HDSP-0783 Low Power 2.8 1300 200 300
High Brightness 8 360 47 68
HDSP-0883 8 360 36 56
HDSP-0983 8 360 30 43
Figure 3. Typical driving circuit.
Pin
Character 1 2,3 4 8
+ 1 X X 1
– 0 X X 1
1 X 1 X X
Decimal Point X X 1 X
Blank 0 0 0 0
Notes:
0: Line switching transistor in Figure 7 cutoff.
1: Line switching transistor in Figure 7 saturated.
X: ‘don’t care.’
13.5
(0.53)
3.3
(0.13)
10.2
(0.400)
1.9
(0.075)
1.5
(0.06)
4.8
(0.19)
4.8
(0.19)
7.4
(0.29)
8 7 6 5
5
MAX. PIN
1
2
3
4
5
6
7
8
FUNCTION
Plus
Numeral One
Numeral One
DP
Open
Open
VCC
Minus/Plus
NOTE: DIMENSIONS IN MILLIMETERS AND (INCHES).
FRONT VIEW C
1 2 3 4
PLUS
R1
#4
#7 VCC = 5.0 V
d.p.
R3
#1
R2
#2
R1
#3
MINUS PLUS
R3
#8
NUMERAL ONE
Color Bin Limits
(Dominant Wavelength)
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 Avago
Technologies representative.
Intensity Bin Limits for HDSP-078x Series
Bin Category Min. (mcd) Max. (mcd) Condition
A 0.065 0.102
B 0.085 0.138
C 0.114 0.200 Luminous Intensity per
D 0.165 0.300 LED. VDD @ 5.0 V
E 0.260 0.488
F 0.403 0.756
G 0.625 1.172
Intensity Bin Limits for HDSP-079x Series
Bin Category Min. (mcd) Max. (mcd) Condition
E 0.260 0.488
F 0.403 0.756 Luminous Intensity per
G 0.625 1.172 LED. VDD @ 5.0 V
H 0.969 1.820
Intensity Bin Limits for HDSP-088x Series
Bin Category Min. (mcd) Max. (mcd) Condition
A 0.22 0.34
B 0.28 0.46
C 0.38 0.66 Luminous Intensity per
D 0.55 0.99 LED. VDD @ 5.0 V
E 0.82 1.54
F 1.27 2.39
Intensity Bin Limits for HDSP-098x Series
Bin Category Min. (mcd) Max. (mcd) Condition
C 0.30 0.52
D 0.43 0.79 Luminous Intensity per
E 0.65 1.18 LED. VDD @ 5.0 V
F 0.97 1.76
G 1.45 2.63
Electrical Characteristics
TA = –55°C to +100°C
Device Description Symbol Test Conditions Min. Typ. Max. Unit
HDSP-0783 Power Dissipation (All LEDs Illuminated) PT IF = 2.8 mA 72 mW
IF = 8 mA 224 282
Forward Voltage per LED VF IF = 2.8 mA 1.6 V
IF = 8 mA 1.75 2.2
HDSP-0883 Power Dissipation (All LEDs Illuminated) PT IF = 8 mA 237 282 mW
Forward Voltage per LED VF 1.90 2.2 V
HDSP-0983 Power Dissipation (All LEDs Illuminated) PT IF = 8 mA 243 282 mW
Forward Voltage per LED VF 1.85 2.2 V
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Data subject to change. Copyright © 2005-2008 Avago Technologies Limited. All rights reserved. Obsoletes 5989-3188EN
AV02-1334EN - June 6, 2008