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參數資料
| 型號： | SCE5784 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 顯示用LED |
| 英文描述： | 5X7 DOT MATRIX DISPLAY, HIGH EFFICIENCY GREEN, 4.57 mm |
| 封裝： | PLASTIC, DIP-26 |
| 文件頁數： | 3/14頁 |
| 文件大小： | 208K |
| 代理商： | SCE5784 |
2001 OSRAM Opto Semiconductors Inc. San Jose, CA
SCE5780/1/2/3/4/5/6
www.inneon.com/opto 408-456-4000
OSRAM Opto Semiconductors GmbH & Co. OHG Regensburg, Germany
www.osram-os.com +49-941-202-7178
11
August 1, 2001-18
Figure 12. ILL Variance
VCC can vary between 4.5 volts and 5.5 volts. Operation below
4.5 volts will change the timing and switching levels of the
inputs.
Interconnect Considerations
Optimum product performance can be had when the following
electrical and mechanical recommendations are adopted. The
SCE578X’s IC is constructed in a high speed CMOS process;
consequently high speed noise on the SERIAL DATA, SERIAL
DATA CLOCK, LOAD and RESET lines may cause incorrect data
to be written into the serial shift register. Adhere to transmis-
sion line termination procedures when using fast line drivers
and long cables (>10 cm).
Good ground and power supply decoupling will insure that ICC
(<800 mA peak) switching currents do not generate localized
ground bounce. Therefore it is recommended that each display
package use a 0.1
F and 20 F tantulum capacitor between
VCC and ground.
When the internal MUX Clock is being used connect the
CLKSEL pin to VCC. In those applications where RESET will not
be connected to the system’s reset control, it is recommended
that this pin be connected to the center node of a series 0.1
F
and 100 k
RC network. Thus upon initial power up the RESET
will be held low for 10 ms allowing adequate time for the sys-
tem power supply to stabilize.
ESD Protection
The input protection structure of the SCE578X provides signi-
cant protection against ESD damage. It is capable of withstand-
ing discharges greater than 2.0 kV. Take all the standard
precautions, normal for CMOS components. These include
properly grounding personnel, tools, tables, and transport carri-
ers that come in contact with unshielded parts. If these condi-
tions are not, or cannot be met, keep the leads of the device
shorted together or the parts in antistatic packaging.
Soldering Considerations
The SCE578X can be hand soldered with SN63 solder using a
grounded iron set to 260
°C.
Wave soldering is also possible following these conditions: Pre-
heat that does not exceed 93
°C on the solder side of the PC
board or a package surface temperature of 85
°C. Water soluble
organic acid ux (except carboxylic acid) or resin-based RMA
ux without alcohol can be used.
Wave temperature of 245
°C ±5°C with a dwell between 1.5
sec. to 3.0 sec. Exposure to the wave should not exceed
temperatures above 260
°C for ve seconds at 0.063" below
the seating plane. The packages should not be immersed in
the wave.
Post Solder Cleaning Procedures
The least offensive cleaning solution is hot D.I. water (60
°C) for
less than 15 minutes. Addition of mild saponiers is acceptable.
Do not use commercial dishwasher detergents.
For faster cleaning, solvents may be used. Exercise care in
choosing solvents as some may chemically attack the nylon
package. For further information refer to Appnotes 18 and 19.
An alternative to soldering and cleaning the display modules is
to use sockets. Naturally, 14 pin DIP sockets .300" wide with
.100" centers work well for single displays. Multiple display
assemblies are best handled by longer SIP sockets or DIP sock-
ets when available for uniform package alignment. Socket man-
ufacturers are Aries Electronics, Inc., Frenchtown, NJ; Garry
Manufacturing, New Brunswick, NJ; Robinson-Nugent, New
Albany, IN; and Samtec Electronic Hardward, New Albany, IN.
For further information refer to Appnote 22.
Optical Considerations
The 0.180" high character of the SCE578X gives readability up
to ve feet. Proper lter selection enhances readability over
this distance.
Using lters emphasizes the contrast ratio between a lit LED
and the character background. This will increase the discrimina-
tion of different characters. The only limitation is cost. Take into
consideration the ambient lighting environment for the best
cost/benet ratio for lters.
Incandescent (with almost no green) or uorescent (with
almost no red) lights do not have the at spectral response of
sunlight. Plastic band-pass lters are an inexpensive and effec-
tive way to strengthen contrast ratios. The SCE5780 is a red
display and should be used with long wavelength pass lter
having a sharp cut-off in the 600 nm to 620 nm range. The
SCE5782 is a high efciency red display and should be used
with long wavelength pass lter having a sharp cut-off in the
570 nm to 600 nm range. The SCE5784 is a high efciency
green display and should be used with long wavelength pass
lter that peaks at 565 nm. The SCE5785 is a soft orange dis-
play and should be used with long wavelength pass lter that
peaks at 610 nm. The SCE5786 is an InGaAlP red display and
should be used with long wavelength pass lter that peaks at
645 nm.
VLL
I LL
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
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相關代理商/技術參數 |
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| SCE5785 | 制造商:OSRAM 制造商全稱:OSRAM 功能描述:Serial Input Dot Addressable Intelligent Display㈢ Devices |
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