HDSP-0781 Datasheet, PDF (5/9 Pages) AVAGO TECHNOLOGIES LIMITED – Glass/Ceramic Numeric and Hexadecimal Displays for Industrial Applications

Electrical/Optical Characteristics
T_A = –55°C to +100°C
Description
Supply
Current
HDSP-078x Series
HDSP-079x/-088x/-098x Series
Symbol
I_CC
Power
HDSP-078x Series
P_T
Dissipation _{HDSP-079x/-088x/-098x Series}
Logic, Enable and Blanking Low-Level
V_IL
Input Voltage
Logic, Enable High-Level Input Voltage
V_IH
Blanking High-Voltage; Display Blanked
V_BH
Logic and Enable Low-Level Input Current
I_IL
Blanking Low-Level Input Current
I_BL
Logic, Enable and Blanking High-Level
I_IH
Input Current
Weight
Leak Rate
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
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
Min. Typ.^[7] Max.
78
105
120 175
390 573
690 963
0.8
Unit
mA
mW
V
V_CC = 5.5 V
V_IL = 0.4 V
V_CC = 5.5 V
V_IH = 2.4 V
2.0
2.3
1.0
V
V
–1.6 mA
–10
µA
+40
µA
gm
5 x 10^-8 cc/sec
5. The dominant wavelength, l_d, is derived from the CIE chromaticity
diagram 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 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.
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