(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 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 switch-
ing transistors.
Features
•
Three character options
Numeric, hexadecimal, over range
•
Three colors;
High Efficiency Red, Yellow, High Performance Green
•
4 x 7 dot matrix character
•
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
Devices
Part Number
HDSP-
0781
0782
0783
0784
0791
0792
0794
0881
0883
0884
0981
0983
0984
Color
High-Efficiency Red
Low Power
High-Efficiency Red
High Brightness
Yellow
High-Performance
Green
Description
Numeric, Right Hand DP
Numeric, Left Hand DP
Over Range ±1
Hexadecimal
Numeric, Right Hand DP
Numeric, Left Hand DP
Hexadecimal
Numeric, Right Hand DP
Over Range ±1
Hexadecimal
Numeric, Right Hand DP
Over Range ±1
Hexadecimal
Front
View
A
B
C
D
A
B
D
A
C
D
A
C
D
Package Dimensions
FRONT VIEW A
10.2 MAX.
(0.400)
FRONT VIEW B
10.2 MAX.
(0.400)
FRONT VIEW D
10.2 MAX.
(0.400)
7.4
(0.29)
1.5
(0.06)
5.6
(0.22)
5
°
13.5
(0.53)
1.5
(0.06)
5.6
(0.22)
7.4
(0.29)
13.5
(0.53)
7.4
(0.29)
1.5
(0.06)
13.5
(0.53)
5
°
5
°
4.8
(0.19)
3.0
(0.12)
3.6
(0.14)
4.8
(0.19)
4.8
(0.19)
REAR VIEW
5
6
7
8
COLOR
CODE
(3)
LUMINOUS
INTENSITY
CATEGORY
DATE CODE
PIN 1 KEY
COUNTRY
CODE
4
3
2
1
2.8
(0.11)
15.2
(0.600)
SIDE VIEW
0-10
°
SEATING
PLANE
SEATING
PLANE
0.3 ± 0.08 TYP.
(0.012 ± 0.003)
END VIEW
3.8
(0.15)
1.5
(0.06)
XZ
10.2
(0.400)
HDSP
XXXX
YYWW
SYYWW
3.4
(0.135)
1.3 TYP.
(0.050)
0.5 ± 0.08 TYP.
(0.020 ± 0.003)
2.5 ± 0.13 TYP.
(0.100 ± 0.005)
4.3
(0.17)
FUNCTION
PIN
1
2
3
4
5
6
7
8
NUMERIC
Input 2
Input 4
Input 8
Decimal Point
Latch Enable
Ground
V
CC
Input 1
HEXADECIMAL
Input 2
Input 4
Input 8
Blanking Control
Latch Enable
Ground
V
CC
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.
2
t
SETUP
DATA INPUT
(LOW LEVEL DATA)
1.5 V
t
HOLD
1.5 V
BCD DATA
[1]
TRUTH TABLE
NUMERIC
HEXADECIMAL
DATA INPUT
(HIGH LEVEL DATA)
ENABLE
INPUT
1.5 V
t
W
X
8
1.5 V
t
TLH
10%
1.5 V
90%
1.5 V
L
L
L
L
L
L
X
4
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
DECIMAL PT.
[2]
ENABLE
[1]
BLANKING
[3]
X
2
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
1
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
Figure 1. Timing diagram.
L
L
H
H
H
V
CC
ENABLE
7
5
H
H
H
(BLANK)
(BLANK)
••••
(BLANK)
(BLANK)
V
DP
= L
V
DP
= H
V
E
= L
V
E
= H
V
B
= L
V
B
= H
LOGIC
INPUT
DP
(2)
8
1
2
3
4
X1
X2
X4
X8
DP
H
LATCH
MEMORY
MATRIX
DECODER
H
DP
LED
MATRIX
DRIVER
ON
OFF
LOAD DATA
LATCH DATA
DISPLAY–ON
DISPLAY–OFF
BLANKING
(3)
CONTROL
4
LED
MATRIX
GROUND
6
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.
Figure 2. Block diagram.
3
Absolute Maximum Ratings
Description
Storage Temperature, Ambient
HDSP-078x/-079x/-088x
HDSP-098x
Operating Temperature, Ambient
[1]
Supply Voltage
[2]
Voltage Applied to Input Logic, dp and Enable Pins
Voltage Applied to Blanking Input
[2]
Soldering Temperature [1.59 mm (0.063 inch) Below Body]
Solder Dipping, max 5 seconds
Wave Soldering, max. 3 seconds
Symbol
T
S
T
A
V
CC
V
I
, V
DP
, V
E
V
R
Min.
-65
-55
-55
-0.5
-0.5
-0.5
Max.
+125
+100
+100
+7.0
V
CC
V
CC
260
250
Unit
°C
°C
V
V
V
°C
Recommended Operating Conditions
Description
Supply Voltage
[2]
Operating Temperature, Ambient
[1]
Enable Pulse Width
Time Data Must Be Held Before Positive Transition of Enable Line
Time Data Must Be Held After Positive Transition of Enable Line
Enable Pulse Rise Time
Symbol
V
CC
T
A
t
W
t
SETUP
t
HOLD
t
TLH
Min.
4.5
-55
100
50
50
Nom.
5.0
Max.
5.5
+100
1.0
Unit
V
°C
nsec
nsec
nsec
msec
Optical Characterstics at T
A
= 25°C, V
CC
= 5.0 V
Device
Description
HDSP-078x Series
HDSP-079x Series
HDSP-088x Series
HDSP-098x Series
Luminous Intensity per LED
(Digit Average)
[3,4]
Peak Wavelength
Dominant Wavelength
[5]
Luminous Intensity per LED
(Digit Average)
[3,4]
Peak Wavelength
Dominant Wavelength
[5]
Luminous Intensity per LED
(Digit Average)
[3,4]
Peak Wavelength
Dominant Wavelength
[5,6]
Luminous Intensity per LED
(Digit Average)
[3,4]
Peak Wavelength
Dominant Wavelength
Symbol
I
V
l
PEAK
l
d
I
V
l
PEAK
l
d
l
V
l
PEAK
l
d
I
V
l
PEAK
l
d
Min.
65
260
215
298
Typ.
140
635
626
620
635
626
490
583
585
1100
568
574
Max.
Unit
µcd
nm
nm
µcd
nm
nm
µcd
nm
nm
µcd
nm
nm
Notes:
1. The nominal thermal resistance of a display mounted in a socket that is soldered onto a printed circuit board is Rq
JA
= 50°C/W/device. The device
package thermal resistance is Rq
J-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.
4
Electrical/Optical Characteristics
T
A
= –55°C to +100°C
Description
Supply
Current
Power
Dissipation
HDSP-078x Series
HDSP-079x/-088x/-098x Series
HDSP-078x Series
HDSP-079x/-088x/-098x Series
Symbol
I
CC
P
T
V
IL
V
IH
V
BH
I
IL
I
BL
I
IH
Test Conditions
V
CC
= 5.5 V
Characters “5.” or
“B” displayed
V
CC
= 5.5 V
Characters “5.” or
“B” displayed
V
CC
= 4.5 V
V
CC
= 5.5 V
V
IL
= 0.4 V
V
CC
= 5.5 V
V
IH
= 2.4 V
Min.
2.0
2.3
Typ.
[7]
78
120
390
690
1.0
Max.
105
175
573
963
0.8
–1.6
–10
+40
5 x 10
-8
Unit
mA
mW
Logic, Enable and Blanking Low-Level
Input Voltage
Logic, Enable High-Level Input Voltage
Blanking High-Voltage; Display Blanked
Logic and Enable Low-Level Input Current
Blanking Low-Level Input Current
Logic, Enable and Blanking High-Level
Input Current
Weight
Leak Rate
V
V
V
mA
µA
µA
gm
cc/sec
Notes:
4. The luminous intensity at a specific operating ambient temperature,
I
v
(T
A
), may be approximated from the following exponential equation:
I
v
(T
A
) = I
v
(25°C) e
[k(TA-25°C)]
.
Device
HDSP-078 Series
HDSP-079x Series
HDSP-088x Series
HDSP-098x Series
K
–0.0131/°C
–0.0112/°C
–0.0104/°C
5. The dominant wavelength, l
d
, 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 V
CC
= 5.0 V and T
A
= 25°C.
Operational Considerations
Electrical
These devices use a modified 4 x 7 dot matrix of light
emitting diodes to display decimal/hexadecimal numeric
information. 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 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 off ) 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 T
A
= 25°C.
The ESD susceptibility of the IC devices is Class A of MIL-
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