TECHNICAL NOTE
Serial-in / Parallel-out Driver Series
Serial / Parallel
2-input Driver
BU2098F, BU2090F/FS
●Description
Serial-in-parallel-out driver is a open drain output driver. It incorporates a built-in shift register and a latch circuit to turn on a
maximum of 12 LED by a 2-line interface, linked to a microcontroller.
A open drain output provides maximum of 25mA current.
●Features
1) LED can be driven directly. (Output current 25mA)
2) 8/12 Bit parallel output
3) This product can be operated on low voltage.
2
4) Compatible with I C BUS. (BU2098)
2
* I C BUS is a registered trademark of Phillips.
●Use
For AV equipment such as, audio stereo sets, videos and TV sets, PCs, control microcontroller mounted equipment.
ver.C Oct.2007
●Line
up
Parameter
Output current
Output line
Package
BU2098F
25
8
SOP16
BU2090F
25
12
SOP16
BU2090FS
Unit
mA
lines
SSOP-A16
－
●Thermal
derating curve
700
Pd
[mW]
Pd
[mW]
600
500
400
BU2098F
300
200
100
85℃
700
600
BU2090FS
500
400
BU2090F
300
200
100
0
Power dissipation
0
25
50
75
100
125
150
175
Power dissipation
25
50
75
100
125
150
175
Ambient temperature Ta
[℃]
Ambient temperature Ta
[℃]
●Electrical
characteristics
BU2098F
(unless otherwise noted, V
DD
=5V, Vss=0V, Ta=25℃)
Parameter
Input High-level voltage
Input Low-level voltage
Output Low-level voltage
Input Low-level current
Input High-level current
Output leakage current
Static dissipation current
Symbol
V
IH
V
IL
V
OL
I
IL
I
IH
I
OZ
I
DD
Min.
0.7ＸV
DD
-
-
-
-
-
-
-
-
-
Typ.
-
-
-
Max.
-
0.3ＸV
DD
0.4
2.0
-2.0
±5.0
2.0
Unit
V
V
V
μA
μA
μA
μA
I
OUT
=10mA
V
IN
=0
V
IN
=V
DD
Output=High impedance
V
OUT
=V
DD
Condition
BU2090F/FS
(unless otherwise noted, V
DD
=5V/3V, V
SS
=0V, Ta=25℃)
Parameter
Input High-level voltage
Input Low-level voltage
Output Low-level voltage
“H” output disable current
“L” output disable current
Static dissipation current
Symbol
V
IH
V
IL
V
OL
I
OZH
I
OZL
I
DD
Min.
3.5/2.5*
-
-
-
-
-
-
Typ.
-
-
-
-
Max.
-
1.5/0.4*
2.0/1.0*
10
-5.0
5.0/3.0*
Unit
V
V
V
μA
μA
μA
(*the value at 5V /3V)
2/15
I
OL
=20mA
V
O
=25V
V
O
=0V
Condition
●Operating
conditions (Ta=25℃, V
SS
=0V)
Limits
Parameter
Power Supply Voltage
Output Voltage
Symbol
BU2098F
V
DD
Vo
0½+15
BU2090F/FS
+2.7½5.5
0½+25
V
V
Unit
●Absolute
maximum ratings
BU2098F
Limits
Parameter
Power supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Output voltage
Input voltage
Allowable loss of single unit
* Reduced by 3mW/℃ over 25℃. (BU2098F)
Symbol
BU2098F
V
DD
Pd
Topr
Tstg
Vo
V
IN
-0.5½+7.0
300
*
Unit
V
mW
℃
℃
V
V
-40½+85
-55½+125
V
SS
½+18.0
-0.5½V
DD
+0.5
BU2090F/FS
Limits
Parameter
Power supply voltage
Power dissipation 1
Power dissipation 2
Operating temperature range
Storage temperature range
Output voltage
Input voltage
Allowable loss of single unit
*
1
Reduced by 3mW/℃ over 25℃.
*
2
Reduced by 5mW/℃ over 25℃.
*
3
Reduced by 5.0mW for each increase in Ta of 1℃ over 25℃.(When mounted on a board 70mm×70mm×1.6mm Glass-epoxy PCB)
*
4
Reduced by 6.5mW for each increase in Ta of 1℃ over 25℃.(When mounted on a board 70mm×70mm×1.6mm Glass-epoxy PCB)
Symbol
BU2090F
V
DD
Pd1
Pd2
Topr
Tstg
Vo
V
IN
300 *
1
Unit
BU2090FS
-0.3½+7.0
500 *
2
650 *
4
-40½+85
-55½+125
V
SS
-0.3½+25
V
SS
-0.3½V
DD
+0.3
V
mW
mW
℃
℃
V
V
500 *
3
3/15
●Pin
descriptions
BU2098F
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
A0
A1
A2
Q0
Q1
Q2
Q3
V
SS
Q4
Q5
Q6
Q7
N.C.
SCL
SDA
V
DD
I/O
I
I
I
Function
Address input, internally pull-up
O
Open drain output
-
GND
O
Open drain output
-
I
I/O
-
Non connected
Serial clock input
Serial data input/output
Power supply
BU2090F/FS
PIN No.
Pin Name
1
V
SS
2
DATA
I/O
-
I
Function
GND
Serial data input
Data shift clock input
(rising edge trigger)
The shift data is transferred to the output when the input data logic
level is high during the falling transition of the clock pulse.
3
CLOCK
I
4
5
6
7
8
9
10
11
12
13
14
15
16
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
V
DD
Parallel data output (Nch Open Drain FET)
O
Latch data
Output FET
L
ON
H
OFF
-
Power supply
4/15
●Block
diagram
BU2098F
Power-On Reset
SDA
SCL
I
2
C Bus
A0
A1
Register
A2
Controller
Shift
8bit
L
a
t
c
h
Write
Buffer
Q0½Q7
BU2090F/FS
CLOCK
12bit
Controller
Shift
DATA
Register
L
a
t
c
h
Write
Buffer
Q0½Q11
5/15
