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HDSP-0862 Schematic ( PDF Datasheet ) - Avago

Teilenummer HDSP-0862
Beschreibung Hexadecimal and Numeric Displays
Hersteller Avago
Logo Avago Logo 




Gesamt 8 Seiten
HDSP-0862 Datasheet, Funktion
HDSP-076x Series
Hexadecimal and Numeric Displays
for Industrial Applications
Data Sheet
HDSP-076x Series, HDSP-077x Series
HDSP-086x Series, HDSP-096x Series
Description
These solid state display devices are designed and tested
for use in adverse industrial environments. The character
height is 7.4 mm (0.29 inch). The numeric and hexadeci-
mal devices incorporate an on-board IC that contains the
data memory, decoder and display driver functions.
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.
Device Selection Guide
Part
Number
HDSP- Color
Description
0760
0761
0762
0763
High-Efficiency
Red
Low Power
Numeric, Right Hand DP
Numeric, Left Hand DP
Hexadecimal
Over Range ±1
0770
0771
0772
High-Efficiency Numeric, Right Hand DP
Red Numeric, Left Hand DP
High Brightness Hexadecimal
0860
0861
0862
0863
Yellow
Numeric, Right Hand DP
Numeric, Left Hand DP
Hexadecimal
Over Range ±1
0960
0961
0962
0963
Green
Numeric, Right Hand DP
Numeric, Left Hand DP
Hexadecimal
Over Range ±1
Front
View
A
B
C
D
A
B
C
A
B
C
D
A
B
C
D
Features
  Three colors: High-efficiency red
Yellow
High performance green
  Two high-efficiency red options
– Low power
– High brightness
  Three character options
– Numeric
– Hexadecimal
– Over range
  Performance guaranteed over temperature
  Memory latch/decoder/driver: TTL compatible
  4 x 7 dot matrix character
  Categorized for luminous intensity
  Yellow and green categorized for color
Typical Applications
  Industrial equipment
  Computer peripherals
  Instrumentation
  Telecommunication equipment






HDSP-0862 Datasheet, Funktion
Operational Considerations
Electrical
These devices use a modified 4 x 7 dot matrix light emit-
ting diode to display decimal/hexa­decimal numeric
information. The high efficiency red and yellow LEDs are
GaAsP epitaxial layer on a GaP transparent substrate. The
green LEDs are GaP epitaxial layer on a GaP transparent
substrate. 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 Recom-
mended 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 TA = 25°C.
Mechanical
The primary thermal path for power dissipation is through
the device leads. Therefore, to insure reliable operation
up to an ambient temperature of +85°C, it is important
to maintain a case-to-ambient thermal resistance of less
than 35°C watt/device as measured on top of display pin
3.
For information on soldering and post solder cleaning see
Applica­tion Note 1027, Soldering LED Components.
Contrast Enhancement
These display devices are designed to provide an
optimum ON/OFF contrast when placed behind an ap-
propriate contrast enhancement filter. For further infor-
mation, please refer to Application Note 1015, Contrast
Enhancement Techniques 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.
Package Dimensions
10.2
(0.400)
MAX.
8765
D
7.4
(0.29)
4.8
(0.19)
1.5
(0.06)
5
1.9
(0.075)
1234
FRONT VIEW
13.5
4.8 (0.53)
(0.19)
3.3
(0.13)
NOTE: DIMENSIONS IN MILLIMETERS AND (INCHES).
PIN FUNCTION
1 Plus
2 Numeral One
3 Numeral One
4 DP
5 Open
6 Open
7 VCC
8 Minus/Plus
       Pin
Character
1 2,3
+ 1 X
- 0 X
1 X 1
Decimal Point
X
X
Blank
0 0
4
X
X
X
1
0
Notes:
0:  Line switching transistor in Figure 7 cutoff.
1:  Line switching transistor in Figure 7 saturated.
X: ‘don’t care’
8
1
1
X
X
0


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