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.

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

Operating temperature

Storage temperature

Input voltage

Output voltage

0.3 ~ + 7.0

BU2090 / F / FS

1000 (DIP), 300 (SOP), 500 (SSOP)

1050 (DIP), 450 (SOP), 400 (SSOP)

BU2092 / F / FV

BU2090 / F / FS

500 (SOP)

, 650 (SSOP)

500 (SOP)

, 650 (SSOP)

BU2092 / F / FV

Topr

25 ~ + 75

Tstg

55 ~ + 125

0.3 ~ V

+ 0.3

~ 25.0

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

2.7 ~ 5.5

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

Block diagram

Control circuit

12-bit shift register

Latch

DATA

CLOCK

DATA

CLOCK

LCK

Q11

Q10

Q11

Q10

Output buffer

(open drain)

BU2090 / F / FS

BU2092 / F

Control circuit

Output buffer

(open drain)

12-bit shift register

12-bit storage register

DATA

CLOCK

LCK

Q11

Q10

N.C.

BU2092FV

Control circuit

Output buffer (open drain)

12-bit shift register

12-bit storage register

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

Pin descriptions

Pin name

GND

Serial data input

Data shift clock input

Data latch clock input

Parallel data output

Not connected

Parallel data output

Output Enable

Power supply

DATA

CLOCK

LCK

N.C.

Q10

Q11

BU2090 / F / FS

BU2092 / F

BU2092 / FV

Pin No.

Function

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

Electrical characteristics (Ta = 25°C)

DC characteristics (unless otherwise noted, Ta = 25°C, V

= 0V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Conditions

3.5

2.5

1.5

0.4

2.0

= 20mA

1.0

= 5mA

OZH

10.0

= 25.0V

OZL

5.0

= 0V

5.0

= V

or V

3.0

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, V

= 0V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

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

500

1000

200

300

200

400

LSUH

100

LHH

250

500

LSUL

200

400

LHL

250

500

Not designed for radiation resistance.

BU2090 / F / FS switching characteristics measurement conditions

90%

10%

90%

10%

90%

CLOCK

DATA

LSUL

LHL

LHH

LSUH

GND (V

)

GND (V

)

Fig.1

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

BU2092 / F / FV switching characteristics (unless otherwise noted, Ta = 25°C, V

= 0V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

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)

= 5k

= 10pF

= 5k

= 10pF

115

PLZ

= 5k

= 10pF

PZL

= 5k

= 10pF

500

1000

500

1000

200

400

200

400

200

400

W (LCK)

PLZ (LCK)

PZL (LCK)

Not designed for radiation resistance.

BU2092 / F / FV switching characteristics measurement conditions

90%

10%

90% 90%

90%

10%

90%

50%

90%

10%

90%

50%

10%

50%

10%

50%

CLOCK

DATA

LCK

PLZ

PZL

(LCK)

GND (V

)

GND (V

)

GND (V

)

GND (V

)

PZL

(LCK)

PLZ

(LCK)

Fig.2

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

Truth table

BU2092 / F / FV

INPUT

FUNCTION

CLOCK DATA

LCK

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

GND (V

)

GND (V

)

GND (V

)

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,

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

CLOCK

DATA

Note 1) indicates unstable output.

Note 2) Pull-up resistance is connected to the output pin.

Q11

Q10

Fig.3 Operation timing chart

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

Q11

Q10

CLOCK

DATA

Note 1) indicates unstable output.

Note 2) Pull-up resistance is connected to the output pin.

D11

D10

Fig.4 Operation timing chart

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

Latch

CLOCK DATA

)

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

GND

GND (V

)

Fig.6

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

Electrical characteristic curves

100

125

150

SOP16

SSOP16 (Unmounted)

SSOP16

1200

1000

800

600

400

200

AMBIENT TEMPERATURE: Ta (

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)

100

125

200

400

600

800

1000

1200

150

DIP18 (Unmounted)

AMBIENT TEMPERATURE: Ta (

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

1.0

1.5

2.0

2.5

OUTPUT VOLTAGE "LOW" LEVEL: V

(V)

OUTPUT CURRENT

"
LOW

"

LEVEL

(

)

Fig.9 Output current vs.output low level

voltage

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

6.5

0.3

3.2

0.2

4.25

0.3

0.5

0.1

19.4

0.3

0.51Min.

6.5

0.3

22.9

0.3

3.29

0.2

0.5

0.1

0.3

0.1

2.54

~ 15

7.62

2.54

~ 15

7.62

SSOP-A16

SSOP-B20

0.4

0.1

1.27

0.15

0.1

0.3Min.

4.4

0.2

6.2

0.3

0.11

1.5

0.1

10.0

0.2

0.4

0.1

1.27

0.3Min.

0.11

1.8

0.1

5.4

0.2

7.8

0.3

0.15

0.1

11.2

0.2

0.15

0.36

0.1

0.8

0.11

6.6

0.2

4.4

0.2

6.2

0.3

1.5

0.1

0.15

0.3Min.

0.15

0.1

6.4

0.3

4.4

0.2

6.5

0.2

0.15

0.1

1.15

0.1

0.3Min.

0.1

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

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ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: BU2090F