Sharp LT1461ED Datasheet
Input circuit
Mono-Multi
Driver
Driver
Driver
Decoder
Buffer
Shiftresister
Latch(G)
Shiftresister
Latch(R)
VR1
G.ADJ
VR2
G.ADJ
Vcc
47K
HC367
ENABLE
CN2
LATCH
CLK
GDATA
RDATA
A3
A2
A1
A0
ENABLE
CN3
LATCH
CLK
GDATA
RDATA
A3
A2
A1
A0
LED
Matrix
OSC
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
Turn-on time
Operating temperature
Storage temperature
Power dissipation
Symbol
V
CC
VLED
VI
tON
Topr
Tstg
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=25˚C)
Dot Matrix LED Unit for Indoor Use LT1461ED(Chip On Board Type)
Parameter
Luminance
Viewing angle
Peak emission wavelength
Symbol
L
V
2θ
1
/
2
λp
TYP
90
90
80
635
565
Unit
cd/m
2
˚
nm
(VCC=5V,VLED=5V,Ta=25˚C)
Red
Yellow-green
Red
Yellow-green
Connector
Power
supply
(CN1)
Input
signal
(CN2)
Output
signal
(CN3)
Symbol
V
LED
VCC
GND1
GND2
A0 to A3
RDATA
GDATA
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.
■ Features
¡No. of dots : 16✕16dots
¡Outline dimensions : 64✕64mm
¡Dot size : ø2.8mm
¡Dot pitch : 4.0mm
¡Radiation color : Yellow-green+Red(dichromatic type)
¡Driving method : 1/16 duty dynamic drive
LT1461ED
■ Absolute Maximum Ratings
■ Optical Characteristics
■ Terminal Functions
■ Electrical Characteristics
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
LED current dissipation
Input voltage
Input current
Clock frequency
Frame frequency
Symbol
V
*1
VLED
ICC
*1
ILED
VIH
VIL
IIH
IIL
fCLK
fFR
CC
(VCC=5V,VLED=5V,Ta=25˚C)
TYP.
MIN.
4.75
------
------
------
3.5
------
------
------
-----80
*1 Under the condition that dichromatic all dots are lit.
■ Timing Chart
WCLK
OFF
t
HD(n+2)DATA
td(L-C)
HD(n+1)DATA ON
td(L-E)
HD(n+1)
td(A-E)
tEN
CLOCK
RDATA
GDATA
RDATAout
GDATAout
LATCH
ENABLE
ADDRESS
(A0~A3)
thtsu
HD(n+1)DATA
tdD
td(C-L)
HD(n)DATA ON
td(E-L)
HD(n)
td(E-A)
td(L-A)
tWL
■ Block Diagram
5.0
5.0
50
1.8
------
------
------
------
------
------
MAX.
5.25
5.25
------
------
------
1.5
0.1
0.12
4
625
tOFF
Unit
mA
µA
mA
MH
HZ
V
V
A
V
V
Z
(Notice) ¡
(Internet) ¡Data for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
159
±1
36.0
30.0
CN1
VV12
3
4
HD0
VD15
VD0
±0.2
HD15
(Output signal)
GND1
9
8
3
A
A
A
A
RDATA5
4
3
2
2
CN3
1
0
1
4
3
2
1
0
1
2
3
CN2
A
A
A
A
RDATA
LATCH7
10
CLOCK
LATCH7
9
810ENABLE
CLOCK
GND1
5
6.6
8 MIN
4-M3.0
1
13 MAX
6.6
±0.1
28.0
62.5
25.0
19 MAX
7 MIN
1010
2 MAX
23.2
1
CN3
VR1VR2
CN1
8MAX
28.0
23.5
4.5
28.0
±0.1
10.5
22.8
4
±0.1
4
28.0
1
6
32.0 MAX
6 GDATA GDATA
±0.2
Pin connection
(Power supply)
LED
CC
GND1
GND2
16.5
62.5
CN2
20 MAX
(Input signal)
19 MAX
P4.0✕15=60.0
63.8
P4.0X15=60.0
63.8
(Depth 6.0)
256-ø2.8
±0.1
ENABLE
LT1461EDLT1481ED
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