2 5 7 Single Color Dot Matrix
LED Displays
LTP-747 Series
757
Features
0.7 inch (17.22mm) matrix height
Choices of four bright colors-green/yellow/red orange/
AlGaAs red.
Low power requirement.
5 7 array with X-Y select.
Compatible with usascll and ebcdic codes.
Stackable vertically and horizontally.
Choices of two matrix orientation.
Cathode row, or cathode column.
Easy mounting on P.C. board or sockets.
Categorized for luminous intensity.
Package Dimensions
Description
The LTP-747/757 series are 0.7 inch (17.2mm) matrix
height 5 7 dot matrix displays. The green, yellow, red
orange and AlGaAs red displays have gray face and
white dots.
The AlGaAs red series devices utilize LED chips which
are made from AlGaAs on a non-transparent GaAs
substrate. The green series devices utilize LED chips
which are made from GaP on a transparent GaP
substrate. The yellow and red orange series utilize LED
chips which are made from GaAsP on a transparent
GaP substrate.
Notes : All dimensions are in millimeters(inches).
Tolerance :
0.25mm (0.010") unless
otherwise noted.
Devices
Part No.
Green
LTP-747G
LTP-757G
Yellow
LTP-747Y
LTP-757Y
Red
Orange
LTP-747E
LTP-757E
Description
AlGaAs Red
LTP-747C
LTP-757C
Anode Column, Cathode Row
Cathode Column, Anode Row
Internal
Circuit Diagram
A
B
Pin Connection
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
Connection
LTP-747
Anode Column 1
Cathode Row 3
Anode Column 2
Cathode Row 5
Cathode Row 6
Cathode Row 7
Anode Column 4
Anode Column 5
Cathode Row 4
Anode Column 3
Cathode Row 2
Cathode Row 1
LTP-757
Cathode Column 1
Anode Row 3
Cathode Column 2
Anode Row 5
Anode Row 6
Anode Row 7
Cathode Column 4
Cathode Column 5
Anode Row 4
Cathode Column 3
Anode Row 2
Anode Row 1
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DISPLAYS
Internal Circuit Diagrams
A. LTP-747
B. LTP-757
Absolute Maximum Ratings at Ta=25
Parameter
Average Power Dissipation Per Dot
Peak Forward Current Per Dot
(1/10 Duty Cycle, 0.1ms Pulse Width)
Average Forward Current Per Dot
Derating Linear from 25 Per Dot
Reverse Voltage Per Dot
Operating Temperature Range
Storage Temperature Range
Solder Temperature 1/16 Inch Below Seating Plane for 3 Seconds at 260
Green
32
90
11
0.15
5
Yellow
28
80
8
0.11
5
Red Orange
32
90
11
0.15
-35
-35
5
to +85
to +85
AlGaAs Red
32
110
14
0.19
5
Unit
mW
mA
mA
mA/
V
Electrical/Optical Characteristics at Ta=25
LTP-747G/757G
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
630
Typ.
2000
565
30
569
2.1
3.0
Max.
Unit
cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=5V
I
P
=80mA
1/16 Duty
2.6
3.7
100
2:1
V
V
A
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LTP-747Y/757Y
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
630
Typ.
2000
585
35
588
2.1
3.0
Max.
Unit
cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=5V
I
P
=80mA
1/16 Duty
2.6
3.7
100
2:1
V
V
A
LTP-747E/757E
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
630
Typ.
2000
630
40
621
2.0
2.6
Max.
Unit
cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=5V
I
P
=80mA
1/16 Duty
2.6
3.4
100
2:1
V
V
A
LTP-747C/757C
Parameter
Average Luminous Intensity
Peak Emission Wavelength
Spectral Line Half-Width
Dominant Wavelength
Forward Voltage, any Dot
Reverse Current, any Dot
Luminous Intensity Matching Ratio
d
V
F
I
R
I
V
-m
Symbol
I
V
P
Min.
5000
Typ.
9000
660
35
638
1.8
2.0
Max.
Unit
cd
nm
nm
nm
Test
Condition
I
P
=80mA
1/16 Duty
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=20mA
I
F
=80mA
V
R
=5V
I
P
=80mA
1/16 Duty
2.4
3.1
100
2:1
V
V
A
Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision
Internationale De L’Eclairage) eye-response curve.
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DISPLAYS
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