Datasheet

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MM74HCT164
Connection Diagram
Top View
Truth Table
H = HIGH Level (steady state)
L = LOW Level (steady state)
X = Irrelevant (any input, including transitions)
↑ = Transition from LOW-to-HIGH level.
Q
AO
, Q
BO
, Q
HO
= the level of Q
A
, Q
B
, or Q
H
, respectively, before the
indicated steady state input conditions were established.
Q
An
, Q
Gn
= The level of Q
A
or Q
G
before the most recent ↑ transition of
the clock; indicated a one-bit shift.
Logic Diagram
Inputs Outputs
Clear Clock A B Q
A
Q
B
... Q
H
LXXXLL L
HLXXQ
AO
Q
BO
Q
HO
H ↑ HH H Q
An
Q
Gn
H ↑ LX L Q
An
Q
Gn
H ↑ XL L Q
An
Q
Gn