DSD-40BCD Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Miniature 4 1/2 Digit, BCD Input Slave LED Display

www.datel.com
®
®
DSD-40BCD Series
Miniature
4½ Digit, BCD Input
Slave LED Display
Features
• Low cost! Complete!
No external components required
• Rugged, epoxy-encapsulated package
• Ideal for computer-based instruments
• Miniature size:
2.17" x 0.92" x 0.56"
55mm x 23mm x 14mm
• Built-in color filter and bezel
• Single +5V supply, TTL compatible
• Low-power model, 35mA (175mW)
• Large (0.52"/13.2mm), matched-
intensity, LED display
• Choice of red or green LED's
• Minus sign and decimal points included
• PC-board or panel mountable
DATEL's new DSD-40BCD digital slave display combines a full-size, 4½ digit,
LED display with all the other necessary components (including a built-in, contrast-
enhancing filter/bezel) to implement a pc-board mountable instrument display. The
epoxy-encapsulated, 24-pin package, measuring only 2.17 x 0.92 x 0.56 inches, is
perfectly sized to occupy the absolute minimum pc-board space. The one-piece LED
display eliminates the need to purchase multiple, matched-intensity LED's — usually
an expensive and limited-availability situation.
The DSD-40BCD's flexible design gives the user full control of all major display
functions including display update rate, number of digits enabled, and decimal point
selection. Its TTL-compatible inputs interface directly with most BCD output, integrat-
ing analog-to-digital converters — no additional glue logic is required! When used
with sophisticated microcomputers, the brightness of any digit can be independently
controlled by simply lowering the digit-drive input duty cycle.
The extremely rugged package allows all models to operate over the temperature
range of 0 to +70°C (at 0 to 95% relative humidity). For power-sensitive designs, the
low-power DSD-40BCD-RL model, with all digits turned on, draws only 35mA from its
+5V supply. This ultra-low power consumption means that even battery-powered
applications can now benefit from the superior readability offered by LED displays.
1
+5V SUPPLY
2
DISPLAY TEST
3
5V RETURN
DIGIT ^A
DRIVE 5
DIGIT ^B
DRIVE 1
DIGIT ^C
DRIVE 2
4
DP 3
DIGIT D
DRIVE 3
5
DP 2
DIGIT ^E
DRIVE 4
6
DP 1
F
POLARITY
Segment
Identification
A
FG B
E
C
D
DIGIT
DRIVE 1
DP 1
+5V
DIGIT
DRIVE 4
DIG 1 DIG 2 DIG 3 DIG 4 DIG 5
POL
DP
DP1
DP2
DP3
DP4
A BC DE F G
SEVEN-SEGMENT DRIVERS
DP 4
DISPLAY TEST
L
B4
K
B2
J
B1
I
B8
H
N.C.
G
N.C.
12
N.C.
11
N.C.
10
5V RETURN
9
N.C.
8
DP 4
7
N.C.
BCD DECODER
Figure 1. DSD-40BCD Series Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: [phone] Fax: [phone] • Email: [e-mail] • Internet: www.datel.com