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Input circuit
Mono-Multi
D
D
Driver
Decoder
B
S
L
S
L
VR1
G.ADJ
VR2
G.ADJ
Vcc
47K
HC367
ELATCH
CN2
A0
GDCLK
A3
A2
A1
CN3
A0
ENABLE
A3
A2
A1
LED
Matrix
OSC
(A0~A3)
ADDRESS
GDATA
CLOCK
RDATAout
LATCH
ENABLE
tOFF
td(C-L)
tWL
tdD
td(E-A)
td(L-A)
td(E-L)
th
tsu
tEN
t
WCLK
td(L-C)
td(A-E)
td(L-E)
HD(n+1)DATA ON
HD(n)DATA ON
OFF
HD(n+1)DATA
HD(n+2)DATA
HD(n)
HD(n+1)
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
*1
LED current dissipation
*1
Input voltage
Input current
Clock frequency
Frame frequency
*1 Under the condition that dichromatic all dots are lit.
Symbol
V
CC
V
LED
I
CC
I
LED
V
IH
V
IL
I
IH
I
IL
f
CLK
f
FR
MIN.
4.75
------
------
------
3.5
------
------
------
------
80
TYP.
5.0
5.0
50
1.8
------
------
------
------
------
------
MAX.
5.25
5.25
------
------
------
1.5
0.1
0.12
4
625
Unit
V
V
mA
A
V
V
μ
A
mA
MH
Z
H
Z
(V
CC
=5V,V
LED
=5V,Ta=25C)
I
Features
No. of dots : 16
16dots
Outline dimensions : 64
64mm
Dot size : 2.8mm
Dot pitch : 4.0mm
Radiation color : Yellow-green+Red(dichromatic type)
Driving method : 1/16 duty dynamic drive
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
Turn-on time
Operating temperature
Storage temperature
Power dissipation
Symbol
V
CC
V
LED
V
I
t
ON
T
opr
T
stg
P
Rating
6.0
6.0
-0.3 to +5.5
1
-
10 to +45
-
20 to +70
13
Unit
V
V
V
ms
C
C
W
(Ta=25C)
159
Dot Matrix LED Unit for Indoor Use LT1461ED(Chip On Board Type)
I
Optical Characteristics
Parameter
I
Terminal Functions
Connector
Symbol
V
LED
V
CC
GND1
GND2
A0 to A3
RDATA
GDATA
Luminance
Viewing angle
Peak emission wavelength
Symbol
L
V
2
θ
1
/
2
λ
p
TYP
90
90
80
635
565
Unit
cd/m
2
nm
(V
CC
=5V,V
LED
=5V,Ta=25C)
Red
Yellow-green
Red
Yellow-green
Power
supply
(CN1)
Input
signal
(CN2)
Output
signal
(CN3)
LATCH
ENABLE
CLOCK
GND1
A0 to A3
RDATA
GDATA
LATCH
ENABLE
CLOCK
GND1
Function
Supply voltage for LED (+5V)
Supply voltage for IC (+5V)
Ground for IC
Ground for LED
Address specification signal for row driver
Serial data input for red (H=ON, L=OFF)
Serial data input for yellow-green (H=ON, L=OFF)
Latch signal of display data. L: Contents are latched.
Controls ON/OFF of LED (H: LED OFF)
Clock signal for data transmission in the shift-
register. (L
H: serial data is shifted.)
Ground for signal. (Connected to ground for IC)
Buffered input signal
Input signal generated through 16-bit shift register
or buffer
Input signal generated through 16-bit shift register
or buffer
Buffered input signal
Buffered input signal
Buffered input signal
Ground for signal. (Connected to ground for IC)
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
LT1461ED
I
Electrical Characteristics
I
Timing Chart
I
Block Diagram
I
Absolute Maximum Ratings