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
VDD – 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)∗4mW
BU2092 / F / FV
Topr – 25 ~ + 75 °C
Tstg – 55 ~ + 125 °C
VIN VSS – 0.3 ~ VDD + 0.3 V
VOVSS ~ 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 VDD 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
910
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
912
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
VSS
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
5
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•Electrical characteristics (Ta = 25°C)
DC characteristics (unless otherwise noted, Ta = 25°C, VSS = 0V)
Parameter Symbol Min. Typ. Max. Unit VDD Conditions
VIH 3.5 ——V5
2.5 —— —
—
3
VIL ——1.5 V5
——0.4 3
VOL ——2.0 V5I
OL = 20mA
——1.0 3
5
5
IOL = 5mA
IOZH ——
10.0 µAV
O = 25.0V
IOZL ——
– 5.0 µAV
O = 0V
IDD ——5.0 µA5V
IN = VSS or VDD
——3.0 3 OUTPUT: OPEN
Input high level voltage
Input low level voltage
Output low level voltage
"H" output disable current
"L" output disable current
Current dissipation
BU2090 / F / FS switching characteristics (unless otherwise noted, Ta = 25°C, VSS = 0V)
Parameter Symbol Min. Typ. Max. Unit VDD Conditions
Minimum clock pulse width
Data shift setup time
Data shift hold time
Data latch setup time
Data latch hold time
Data latch "L" setup time
Data latch "L" hold time
tW500 ——ns 5
31000 ——
tSU 200 ——
—
—
—
—
—
—
—
ns 5
3300 ——
tH200 ——ns 5
3400 ——
tLSUH 50 ——ns 5
3100 ——
tLHH 250 ——ns 5
3500 ——
tLSUL 200 ——ns 5
3400 ——
tLHL 250 ——ns 5
3500 ——
䊊Not designed for radiation resistance.
BU2090 / F / FS switching characteristics measurement conditions
90%
10%
90%
10% 10%
10%10%
10%
90%
90% 90% 90% 90%
VDD
VDD
CLOCK
DATA
tHtSU tLSUL tLHL tLHH
tLSUH
t
W
t
W
GND (VSS)
GND (VSS)
Fig.1
6
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
BU2092 / F / FV switching characteristics (unless otherwise noted, Ta = 25°C, VSS = 0V)
Parameter Symbol Min. Typ. Max. Unit VDD Conditions
Transmission delay time
(LCK to OUTPUT QX)
Output disable time
(OE to OUTPUT QX)
Minimum clock pulse width
Minimum latch pulse width
Setup time
(LCK to CLOCK)
Setup time
(DATA to CLOCK)
Hold time
(CLOCK to DATA)
— 55 — ns 5RL = 5kΩ
CL = 10pF
— 90 — 3
— 50 — ns 5RL = 5kΩ
CL = 10pF
— 115 — 3
tPLZ — 45 — ns 5RL = 5kΩ
CL = 10pF
— 70 — 3
tPZL — 35 — ns 5RL = 5kΩ
CL = 10pF
— 80 — 3
tW500 ——ns 5
1000 —— —
—
—
—
—
3
500 ——ns 5
1000 —— 3
tS200 ——ns 5
400 —— 3
tSU 200 ——ns 5
400 —— 3
tH200 ——ns 5
400 —— 3
tW (LCK)
tPLZ (LCK)
tPZL (LCK)
䊊 Not designed for radiation resistance.
BU2092 / F / FV switching characteristics measurement conditions
90%
10%
90% 90%
90%
10% 10%
90% 90%
50% 50%
90%
10%
90%
50% 50%
10% 50% 10% 50%
tWtW
CLOCK
DATA
LCK
OE
Qx
VDD
VDD
VDD
VDD
tSU tH
tS
tPLZ tPZL
tW (LCK)
GND (VSS)
GND (VSS)
GND (VSS)
GND (VSS)
tPZL (LCK) tPLZ (LCK)
Fig.2
7
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•Truth table
BU2092 / F / FV
INPUT FUNCTION
CLOCK DATA LCK OE
×× ×
H
×× ×
L
L
××
H
××
×××
×× ×
×× ×
Output (Q0 to Q11) disabled
Output (Q0 to Q11) enabled
First cell of the shift register stores the LOW. Other cells, respectively, store
data from the preceding cells or other prior data. (Output state is HOLD.)
First cell of the shift register stores the HIGH. Other cells, respectively, store
data from the preceding cells or other prior data. (Storage state and output state are HOLD.)
No change in shift register.
Contents of shift register are stored in storage register.
No change in shift register.
Q0 to Q11 output for the BU2090 / F / FS and BU2092 / F / FV is Nch open drain output. When the shift register transfer data is LOW,
the corresponding output FET is ON (continuous state). When the transfer data is HIGH, the output FET is OFF (discontinuous).
•Input / output circuit
VDD VDD
GND (VSS)GND (VSS)GND (VSS)
Pin No. Pin No. Pin No. Pin No. Pin No. Pin No.
BU2090 / F / FS BU2092 / F BU2092FV BU2090 / F / FS BU2092 / F BU2092FV
2, 3 2, 3, 4, 17 2, 3, 4, 19
10, 11, 12, 13
14, 15
4, 5, 6, 7, 8, 9 10, 11, 12, 13
14, 15, 16
5, 6, 7, 8, 9, 10, 11, 14, 15
16, 17, 18
5, 6, 7, 8, 9,
8
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•Circuit operation
The logic of the DATA pin is sent to the 12-bit shift register on the rising edge of the CLOCK pulse. Subsequently, it
is shifted from Q0 to Q11 for every clock rising edge.
For the BU2090 / F / FS
When the DATA pin is LOW on the CLOCK falling edge, the data does not change its output state. It is only shifted in
the internal shift register. However, when the DATA pin is HIGH, the content of the 12-bit shift register is latched and
is output to the corresponding Q0 to Q11.
D11 D10 D8 D7 D6 D5 D4 D3 D2 D1 D0D9
CLOCK
DATA
Note 1) indicates unstable output.
Note 2) Pull-up resistance is connected to the output pin.
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Fig.3 Operation timing chart
9
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
For the BU2092 / F / FV
The content of the 12-bit shift register is stored in the 12-bit storage register at the rising edge of LCK, and is output
to the corresponding Q0 to Q11. When OE is HIGH, regardless of the content of the storage register, the output FET
turns OFF and enters a HIGH (discontinuous) state.
LCK
OE
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
CLOCK
DATA
Note 1) indicates unstable output.
Note 2) Pull-up resistance is connected to the output pin.
D11 D10 D8 D7 D6 D5 D4 D3 D2 D1 D0D9
Fig.4 Operation timing chart
10
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•Application example
BU2090 / F / FS
Control
circuit
Output buffer (open drain)
12-bit shift register
LED power supply
GND
GND
Latch
VDD
CLOCK DATA
(VSS) (VSS)
Fig.5
BU2092 / F / (FV)
CLOCK
DATA
LED power supply
Control
circuit
Output buffer (open drain)
12-bit shift register
12-bit storage register
LCK
OE
GND
VDD
GND (VSS)
(VSS)
Fig.6
11
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•Electrical characteristic curves
25 50 75 100 125 1500
SOP16
SSOP16
(
Unmounted
)
SSOP16
1200
1000
800
600
400
200
AMBIENT TEMPERATURE: Ta (°C)
POWER DISSIPATION: Pd (mW)
Fig.7 BU2090 / F / FS thermal derating
characteristics
DIP16
(
Unmounted
)
(
when mounted on a 90mm × 50mm × 1.6mm
glass epoxy board
)
(
when mounted on a 50mm × 50mm × 1.6mm
glass epoxy board
)
SOP16
(
Unmounted
)
25 50 75 100 125
0
200
400
600
800
1000
1200
150
DIP18
(
Unmounted
)
AMBIENT TEMPERATURE: Ta (°C)
POWER DISSIPATION: Pd (mW)
(
When mounted on a 70mm
×
70mm
×
1.6mm glass epoxy board
)
SSOP-B20
SSOP-B20
(
Unmounted
)
Fig.8 BU2092 / F / FV thermal derating
characteristics
(
when mounted on a 50mm × 50mm × 1.6mm
glass epoxy board
)
SOP18
(
Unmounted
)
SOP18
0.5
01.0 1.5 2.0 2.5
30
25
20
15
10
5
VDD = 5V VDD = 3V
OUTPUT VOLTAGE "LOW"
LEVEL
:
V
OL
(V)
OUTPUT CURRENT "LOW"
LEVEL
:
I
OL
(mA)
Fig.9 Output current vs.output low level
voltage
12
Standard ICs BU2090 / BU2090F / BU2090FS /
BU2092 / BU2092F / BU2092FV
•External dimensions (Units: mm)
DIP16
SOP16
DIP18
SOP18
BU2090F
BU2090FS BU2092FV
BU2090 BU2092
BU2092F
0.51Min.
0.3 ± 0.1
916
81
6.5 ± 0.3
3.2 ± 0.2 4.25 ± 0.3
0.5 ± 0.1
19.4 ± 0.3
0.51Min.
18 10
91
6.5 ± 0.3
22.9 ± 0.3
3.29 ± 0.2
0.5 ± 0.1
0.3 ± 0.1
2.54 0° ~ 15°
7.62
2.54 0° ~ 15°
7.62
SSOP-A16 SSOP-B20
0.4 ± 0.11.27
0.15
0.15 ± 0.1
0.3Min.
4.4 ± 0.2
6.2 ± 0.3
0.11
1.5 ± 0.1
1
16
10.0 ± 0.2
8
9
0.4 ± 0.11.27 0.3Min.
0.11
1.8 ± 0.1
5.4 ± 0.2
7.8 ± 0.3
0.15 ± 0.1
18
1
11.2 ± 0.2
10
9
0.15
0.36 ± 0.10.8
0.11
6.6 ± 0.2
4.4 ± 0.2
6.2 ± 0.31.5 ± 0.1
1
16
8
9
0.15
0.3Min.
0.15 ± 0.1
11
10
20
1
6.4 ± 0.3
4.4 ± 0.2
6.5 ± 0.2
0.15 ± 0.1
1.15 ± 0.1
0.3Min.
0.1
11
10
20
1
0.1
6.4 ± 0.3
4.4 ± 0.2
6.5 ± 0.2
0.15 ± 0.1
0.22 ± 0.1
0.65
1.15 ± 0.1
0.3Min.
0.1
Appendix
Appendix1-Rev1.0
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
