ROHM BU2090F, BU2090, BU2092FV, BU2092F, BU2092 Datasheet
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1
Standard ICs
BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
12-bit, serial IN, parallel OUT driver
BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
The BU2090, BU2090F, BU2090FS, BU2092, BU2092F, and BU2092FV are 12-bit serial input, parallel output
drivers.
For the BU2090 / F / FS, data input is shifted to the 12-bit internal shift register on the rising edge of a clock pulse.
On the falling edge of the pulse, if the DATA pin is HIGH, the data in the shift register is output in parallel to Q0 to
Q11.
For the BU2092 / F / FV, shift data read at the rising edge of CLOCK is output in parallel to Q0 to Q11 at the rising
edge of LCK. These ICs also have an OE pin, which when HIGH, forces data to be output, regardless of the shift
data state.
•
Applications
Radio cassette players, telephones, compact audio systems, car stereos, and others
•
Features
1) Low power dissipation.
2) Operating voltages ranging from 2.7 to 5.5V.
3) Output is Nch open drain.
4) High output withstand voltage of + 25V.
5) Diverse variety of packages.
BU2090 / F / FS: DIP16, SOP16, SSOP-A16
BU2092 / F / FV: DIP18, SOP18, SSOP-A18
(plastic molds)
6) High drive capability; direct lighting of green LED
possible.
2
Standard ICs
BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•
Absolute maximum ratings (Ta = 25°C)
(BU2090 / F / FS, BU2092 / F / FV)
Parameter Symbol Limits Unit
Power supply voltage
Power
dissipation
Power
dissipation
Operating temperature
Storage temperature
Input voltage
Output voltage
V
DD – 0.3 ~ + 7.0 V
BU2090 / F / FS
Pd
1000 (DIP), 300 (SOP), 500 (SSOP)
∗
1
1050 (DIP), 450 (SOP), 400 (SSOP)
∗
1
mW
BU2092 / F / FV
BU2090 / F / FS
Pd
500 (SOP)
∗
2
, 650 (SSOP)
∗
3
500 (SOP)
∗
2
, 650 (SSOP)
∗
4
mW
BU2092 / F / FV
Topr – 25 ~ + 75
°C
Tstg – 55 ~ + 125 °C
V
IN VSS – 0.3 ~ VDD + 0.3 V
V
O VSS ~ 25.0 V
∗
1 Unmounted
∗
2 When mounted on a glass epoxy board of 50mm × 50mm × 1.6mm
∗
3 When mounted on a glass epoxy board of 90mm × 50mm × 1.6mm
∗
4 When mounted on a glass epoxy board of 70mm × 70mm × 1.6mm
•
Recommended operating conditions
Parameter Symbol Limits Unit
Power supply voltage V
DD 2.7 ~ 5.5 V
3
Standard ICs
BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•
Block diagram
Control circuit
12-bit shift register
Latch
VSS
2
1
3
4
5
6
7
8
DATA
CLOCK
Q0
Q1
Q2
Q3
Q4
16
15
14
13
12
11
10
9
VDD
VSS
2
1
3
DATA
CLOCK
Q0
Q1
Q2
Q3
Q4
VDD
4
LCK
5
6
7
8
9
10
11
12
13
14
15
16
OE
17
18
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Output buffer
(open drain)
BU2090 / F / FS BU2092 / F
Control circuit
Output buffer
(open drain)
12-bit shift register
1
12-bit storage register
VSS
2
1
3
DATA
CLOCK
Q0
Q1
Q2
Q3
Q4
VDD
4
LCK
5
6
7
8
9
12
13
14
15
16
17
18
OE
19
20
Q11
Q10
Q9
Q8
Q7
N.C.
N.C.
BU2092FV
Control circuit
Output buffer (open drain)
12-bit shift register
12-bit storage register
Q5
10
11
Q6
4
Standard ICs
BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•
Pin descriptions
Pin name
11 GND
Serial data input
Data shift clock input
Data latch clock input
Parallel data output
Parallel data output
Parallel data output
Parallel data output
Parallel data output
Parallel data output
Parallel data output
Not connected
Not connected
Parallel data output
Parallel data output
Parallel data output
Parallel data output
Parallel data output
Output Enable
Power supply
2 2 DATA
3 3 CLOCK
—
4 LCK
45 Q0
56 Q1
67 Q2
78 Q3
89 Q4
910 Q5
10 11 Q6
N.C.
N.C.
——
Q7
——
Q8
11 12
Q9
12 13
Q10
13 14
Q11
14 15
OE
15 16
V
SS
VDD
BU2090 / F / FS BU2092 / F
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
—
17 19
16 18 20
BU2092 / FV
Pin No.
Function
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