BU2114 View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

View to exact match

BU2114

8-bit shift register and latch driver

ROHM Semiconductor 

Standard ICs

BU2114 / BU2114F

•Pin descriptions

Pin No. Symbol

I/O

Function

1

SIN

I

Serial data input pin

2

CK

I

Shift clock for shift register

Setting this pin to "L" holds the latch output. While it is

3

LATCH

I

"H", latch output changes simultaneously when the

shift register output changes.

4

SOUT

O

This is the output for the final-stage shift register.

5

EN

This is the Enable pin for O1 to O8. When this pin is

"L", the latch output appears as is.

I

When the output is "H", however, output QN is "L",

and when the latch output is "L", Qn becomes High-

Z

6

RST

I

Resets the shift register and latch.

7

GND

—

0V power supply

8

GND

—

0V power supply

9

GND

—

0V power supply

10

O8

O

Latch output for 8th stage of shift register

11

O7

O

Latch output for 7th stage of shift register

12

O6

O

Latch output for 6th stage of shift register

13

O5

O

Latch output for 5th stage of shift register

14

O4

O

Latch output for 4th stage of shift register

15

O3

O

Latch output for 3rd stage of shift register

16

O2

O

Latch output for 2nd stage of shift register

17

O1

O

Latch output for 1st stage of shift register

18

VDD

—

+ VDD power supply

Note 1) O1 to O8 are open drain output, and when the shift register output is "H", the output level goes "L".

3

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