BU2114 Datasheet, PDF (3/8 Pages) Rohm – 8-bit shift register and latch driver

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