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BU2092F_OLD

12-bit, serial IN, parallel OUT driver

ROHM Semiconductor 

Standard ICs

BU2090 / BU2090F / BU2090FS /

BU2092 / BU2092F / BU2092FV

•Truth table

BU2092 / F / FV

INPUT

CLOCK DATA LCK

×

×

×

×

×

×

L

×

H

×

×

×

×

×

×

×

FUNCTION

OE

H Output (Q0 to Q11) disabled

L 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

BU2090 / F / FS

BU2092 / F

BU2092FV

BU2090 / F / FS

BU2092 / F

BU2092FV

4, 5, 6, 7, 8, 9

5, 6, 7, 8, 9,

5, 6, 7, 8, 9,

Pin No. 2, 3 Pin No. 2, 3, 4, 17 Pin No. 2, 3, 4, 19 Pin No. 10, 11, 12, 13 Pin No. 10, 11, 12, 13 Pin No. 10, 11, 14, 15

14, 15

14, 15, 16

16, 17, 18

VDD

VDD

GND (VSS)

GND (VSS)

GND (VSS)

7

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