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MC74ACT564 Datasheet PDF : 8 Pages
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MC74ACT564
Octal D−Type Flip−Flop
with 3−State Outputs
The MC74ACT564 is a high−speed, low power octal flip−flop with
a buffered common Clock (CP) and a buffered common Output
Enable (OE).
The information presented to the D inputs is stored in the flip−flops
on the LOW−to−HIGH Clock (CP) transition.
The MC74ACT564 device is functionally indentical to the
MC74ACT574, but with inverted outputs.
Features
• Inputs and Outputs on the Opposite Sides of the Package Allowing
Easy Interface with Microprocessors
• Useful as Input or Output Port for Microprocessor
• Functionally Indentical to the MC74ACT574 but with Inverted
Outputs
• 3−State Outputs for Bus−Oriented Applications
• Outputs Source/Sink 24 mA
• TTL Compatible Inputs
• Pb−Free Packages are Available*
VCC O0 O1 O2 O3 O4 O5 O6 O7 CP
20 19 18 17 16 15 14 13 12 11
http://onsemi.com
PDIP−20
N SUFFIX
CASE 738
1
SOIC−20W
DW SUFFIX
CASE 751D
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
1 2 3 4 5 6 7 8 9 10
OE D0 D1 D2 D3 D4 D5 D6 D7 GND
Figure 1. Pinout: 20−Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN
FUNCTION
D0−D7
CP
Data Inputs
Clock Pulse Input
OE
3−State Output Enable Input
O0−O7
3−State Outputs
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 5 of this data sheet.
D0 D1 D2 D3 D4 D5 D6 D7
CP
OE
O0 O1 O2 O3 O4 O5 O6 O7
Figure 2. Logic Symbol
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
1
December, 2006 − Rev. 3
Publication Order Number:
MC74ACT564/D
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