HDSP-078 HP [Agilent(Hewlett-Packard)], HDSP-078 Datasheet - Page 4

• Manufacturer Part Number: HDSP-078
• Description: Glass/Ceramic Numeric and Hexadecimal Displays for Industrial Applications
• Manufacturer: HP [Agilent(Hewlett-Packard)]

Electrical/Optical Characteristics
T
Notes:
4. The luminous intensity at a specific operating ambient
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
A
Supply
Current
Power
Dissipation
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
temperature, I
exponential equation: I
= –55 C to +100 C
HDSP-078 Series
HDSP-079x Series
HDSP-088x Series
HDSP-098x Series
Device
Description
v
(T
A
HDSP-079x/-088x/
HDSP-078x Series
-098x Series
HDSP-078x Series
-098x Series
), may be approximated from the following
HDSP-079x/-088x/
v
(T
A
) = I
v
(25 C) e
[k(T -25 C)]
–0.0131/ C
–0.0112/ C
–0.0104/ C
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.
A
Symbol
K
V
I
V
V
I
.
P
I
I
CC
BL
BH
IH
IL
IH
IL
T
Test Conditions
V
“B” displayed
V
Characters “5.” or
“B” displayed
V
V
V
V
V
Characters “5.” or
CC
CC
CC
CC
IL
CC
IH
= 0.4 V
= 2.4 V
= 5.5 V
= 5.5 V
= 4.5 V
= 5.5 V
= 5.5 V
5. The dominant wavelength,
6. The HDSP-088X and HDSP-098X series devices are categor-
7. All typical values at V
ticity diagram and represents the single wavelength which
defines the color of the device.
ized as to dominant wavelength with the category designated
by a number on the back of the display package.
Min.
2.0
2.3
4
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
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.
CC
= 5.0 V and T
Typ.
d
120
, is derived from the CIE chroma-
390
690
1.0
78
A
= 25 C.
[7]
A
5 x 10
= 25 C.
Max.
–1.6
+40
105
573
175
–10
963
0.8
-8
cc/sec
Unit
mW
mA
mA
gm
V
V
V
A
A