HD74AC166 Datasheet, PDF (3/11 Pages) Hitachi Semiconductor – 8-bit Shift Register

Truth Table
Inputs
MR
PE
L
X
CP₂
CP₁
D_S
X
X
X
H
X
L
L
X
H
L
L
X
H
H
L
H
H
H
L
L
H
X
H
X
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
: Low-to-High Clock Transition
HD74AC166/HD74ACT166
Parallel
P₀ to P₇
X
X
a ··· h
X
X
X
Internal Outputs
Q₀
Q₆
L
L
Q_A0
Q_B0
a
b
H
Q_An
L
Q_An
Q_A0
Q_B0
Output
Q₇
L
Q_H0
h
Q_Gn
Q_Gn
Q_H0
Logic Diagram
CP
P0
DS
P1
P2
P3
P4
P5
P6
MR
P7 PE
12
R CP S
CD
Q
R CP S
CD
Q
Q7
3