HD74HC166 Datasheet, PDF (2/7 Pages) Hitachi Semiconductor – Parallel-load 8-bit Shift Register

HD74HC166
Pin Arrangement
Serial
Input
1
A2
B3
Parallel
Inputs _{C 4}
D5
Clock
Inhibit
6
Clock 7
GND 8
(Top view)
16 V_CC
15 Shift/Load
14
Parallel
Input H
13
Output
QH
12 G
11 F
Parallel
Inputs
10 E
9 Clear
Timing Diagram
Clock
Clock Inhibit
Clear
Serial Input
Shift/Load
A
B
C
D
Parallel
Inputs _E
F
G
H
Output QH
Clear
Serial Shift
H
L
H
L
H
L
H
H
HH LH L HL HL
Inhibit
Load
Serial Shift
Rev.3.00, Jan 31, 2006 page 2 of 6