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National Semiconductor - Octal D-Type Flip-Flop

Numéro de référence 54AC574
Description Octal D-Type Flip-Flop
Fabricant National Semiconductor 
Logo National Semiconductor 





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54AC574 fiche technique
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September 1998
54AC574 54ACT574
Octal D-Type Flip-Flop with TRI-STATE® Outputs
General Description
The ’AC/’ACT574 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 in-
puts is stored in the flip-flops on the LOW-to-HIGH Clock
(CP) transition.
The ’AC/’ACT574 is functionally identical to the ’AC/’ACT374
except for the pinouts.
Features
n ICC and IOZ reduced by 50%
n Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
n Useful as input or output port for microprocessors
n Functionally identical to ’AC/’ACT374
n TRI-STATE outputs for bus-oriented applications
n Outputs source/sink 24 mA
n ’ACT574 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’ACT574: 5962-89601
Logic Symbols
IEEE/IEC
DS100256-1
DS100256-4
Pin Names
D0– D7
CP
OE
O0– O7
Description
Data Inputs
Clock Pulse Input
TRI-STATE Output Enable Input
TRI-STATE Outputs
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACTis a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100256
www.national.com

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