DSD-40BCD Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – Miniature 4 1/2 Digit, BCD Input Slave LED Display

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
PRODUCT OVERVIEW
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 elimi-
nates 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 dis-
play update rate, number of digits enabled, and decimal point selection. Its TTL-compatible inputs interface
directly with most BCD output, integrating 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.
SIMPLIFIED SCHEMATIC
1
+5V SUPPLY
DIGIT ^A
DRIVE 5
2
DISPLAY TEST
DIGIT ^B
DRIVE 1
3
5V RETURN
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
Ḥ
+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
Figure 1. Simplified Schematic
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
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
MPM_DSD-40BCD.B01 Page 1 of 5