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PDF HPDL-2416 Data sheet ( Hoja de datos )
| Número de pieza | HPDL-2416 | |
| Descripción | Four Character Smart Alphanumeric Displays | |
| Fabricantes | Agilent(Hewlett-Packard) | |
| Logotipo | .gif "Agilent(Hewlett-Packard)"){kind=logo} |
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H
Four Character Smart
Alphanumeric Displays
Technical Data
HPDL-1414
HPDL-2416
Features
• Smart Alphanumeric Display
Built-in RAM, ASCII Decoder
and LED Drive Circuitry
• Wide Operating Temperature
Range
-40°C to +85°C
• Fast Access Time
160 ns
• Excellent ESD Protection
Built-in Input Protection Diodes
• CMOS IC for Low Power
Consumption
• Full TTL Compatibility Over
Operating Temperature
Range
VIL = 0.8 V
VIH = 2.0 V
• Wave Solderable
• Rugged Package
Construction
• End-Stackable
• Wide Viewing Angle
Typical Applications
• Portable Data Entry Devices
• Medical Equipment
• Process Control Equipment
• Test Equipment
• Industrial Instrumentation
• Computer Peripherals
• Telecommunication
Instrumentation
Description
The HPDL-1414 and 2416 are
smart, four character, sixteen-
segment, red GaAsP displays. The
HPDL-1414 has a character
height of 2.85 mm (0.112"). The
HPDL-2416 has a character
height of 4.10 mm (0.160"). The
on-board CMOS IC contains
memory, ASCII decoder, multi-
plexing circuitry and drivers. The
monolithic LED characters are
magnified by an immersion lens
which increases both character
size and luminous intensity. The
encapsulated dual-in-line package
provides a rugged, environment-
ally sealed unit.
The HPDL-1414 and 2416
incorporate many improvements
over competitive products. They
have a wide operating tempera-
ture range, very fast IC access
time, and improved ESD protec-
tion. The displays are also fully
TTL compatible, wave solderable,
and highly reliable. These
displays are ideally suited for
industrial and commercial
applications where a good-
looking, easy-to-use alphanumeric
display is required.
ESD WARNING: STANDARD CMOS HANDLING PRECAUTIONS SHOULD BE OBSERVED
WITH THE HPDL-1414 AND HPDL-2416.
5964-6381E
3-175
1 page  
AC Timing Characteristics over Operating Temperature Range at VCC = 4.5 V
Parameter
Address Setup Time
Write Delay Time
Write Time
Data Setup Time
Data Hold Time
Address Hold Time
Chip Enable Hold Time[1]
Chip Enable Setup Time[1]
Clear Time[1]
Access Time
Symbol
tAS
tWD
tW
tDS
tDH
tAH
tCEH
tCES
tCLR
-20°C tMIN
90
10
80
40
40
40
40
90
2.4
130
25°C tMIN
115
15
100
60
45
45
45
115
3.5
160
70°C tMIN
150
20
130
80
50
50
50
150
4.0
200
Units
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
Refresh Rate
420-790
310-630
270-550
Hz
Note:
1. HPDL-2416 only.
Timing Diagram
3-179
5 Page 
Display Blank HPDL-2416
As shown in Figure 4, the display
will be blanked if the blanking
input (BL) is held low. Note that
the display will be blanked
regardless of the state of the chip
enables (CE1, CE2) or write (WR)
inputs. The ASCII data stored in
the display and the cursor
memory are not affected by the
blanking input. ASCII data and
cursor data can be stored even
while the blanking input (BL) is
low. Note that while the blanking
input (BL) is low, the clear (CLR)
function is inhibited. A flashing
display can be obtained by
applying a low frequency square
wave to the blanking input (BL).
Because the blanking input (BL)
also resets the internal display
multiplex counter, the frequency
applied to the blanking input
(BL) should be much slower than
the display multiplex rate. Finally,
dimming of the display through
the blanking input (BL) is not
recommended.
For further application informa-
tion please consult Application
Note 1026.
Optical Considerations/
Contrast Enhancement
The HPDL-1414 and HPDL-2416
displays use a precision aspheric
immersion lens to provide
excellent readability and low off-
axis distortion. For the HPDL-
1414, the aspheric lens produces
a magnified character height of
2.85 mm (0.112 in.) and a
viewing angle of ± 40°. For the
HPDL-2416, the aspheric lens
produces a magnified character
height of 4.1 mm (0.160 in.) and
a viewing angle of ± 50°. These
features provide excellent
readability at distances up to 1.5
metres (4 feet) for the HPDL-
1414 and 2 metres (6 feet) for
the HPDL-2416.
Each HPDL-1414/2416 display is
tested for luminous intensity and
marked with an intensity category
on the side of the display
package. To ensure intensity
matching for multiple package
applications, mixing intensity
categories for a given panel is not
recommended.
The HPDL-1414/2416 display is
designed to provide maximum
contrast when placed behind an
appropriate contrast enhance-
ment filter. For further informa-
tion on contrast enhancement,
see Hewlett-Packard Application
Note 1015.
Mechanical and Electrical
Considerations
The HPDL-1414/2416 are dual in-
line packages that can be stacked
horizontally and vertically to
create arrays of any size. These
displays are designed to operate
continuously between -40°C to
+85°C with a maximum of 10
segments on per digit.
During continuous operation of
all four Cursors the operating
temperature should be limited to
-40°C to +55°C. At temperatures
above +55°C, the maximum
number of Cursors illuminated
continuously should be reduced
as follows: No Cursors illumin-
ated at operating temperatures
above 75°C. One Cursor can be
illuminated continuously at
operating temperatures below
75°C. Two Cursors can be
illuminated continuously at
operating temperatures below
68°C. Three Cursors can be
illuminated continuously at
operating temperatures below
60°C.
The HPDL-1414/2416 are assem-
bled by die attaching and wire
bonding the four GaAsP/GaAs
monolithic LED chips and the
CMOS IC to a high temperature
printed circuit board. An
immersion lens is formed by
placing the PC board assembly
into a nylon lens filled with
epoxy. A plastic cap creates an
air gap to protect the CMOS IC.
Backfill epoxy environmentally
seals the display package. This
package construction provides
the display with a high tolerance
to temperature cycling.
The inputs to the CMOS IC are
protected against static discharge
and input current latchup.
However, for best results
standard CMOS handling
precautions should be used. Prior
to use, the HPDL-1414/2416
should be stored in anti-static
tubes or conductive material.
During assembly a grounded
conductive work area should be
used, and assembly personnel
should wear conductive wrist
straps. Lab coats made of
synthetic material should be
avoided since they are prone to
static charge build-up. Input
current latchup is caused when
the CMOS inputs are subjected
either to a voltage below ground
(VIN < ground) or to a voltage
higher than VDD (VIN > VDD) and
when a high current is forced into
the input. To prevent input
current latchup and ESD damage,
unused inputs should be
connected either to ground or to
VDD. Voltages should not be
applied to the inputs until VDD
has been applied to the display.
Transient input voltages should
be eliminated.
3-185
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet HPDL-2416.PDF ] | |
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