Connection Diagrams

Functional Description

The’ACT564 consists of eight edge-triggered flip-flops with

individual D-type inputs and TRI-STATE complement out-

puts. The buffered clock and buffered Output Enable are

common to all flip-flops. The eight flip-flops will store the

state of their individual D inputs that meet the setup and hold

time requirements on the LOW-to-HIGH Clock (CP) transi-

tion. With the Output Enable (OE) LOW, the complement of

the contents of the eight flip-flops are available at the out-

puts. When OE is HIGH, the outputs go to the high imped-

ance state. Operation of the OE input does not affect the

state of the flip-flops.

Function Table

Inputs

Internal

Outputs

Function

OE

CP

D

Q

O

N

H

H

L

NC

Z

Hold

H

H

H

NC

Z

Hold

H

N

L

L

Z

Load

H

N

H

H

Z

Load

L

N

L

L

H

Data Available

L

N

H

H

L

Data Available

L

H

L

NC

NC

No Change in Data

L

H

H

NC

NC

No Change in Data

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Z = High Impedance

N = LOW-to-HIGH Transition

NC = No Change

Pin Assignment for DIP,

and Flatpak

DS100994-3

Pin Assignment

for LCC

DS100994-4

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