54FCT574
Octal D-Type Flip-Flop with TRI-STATE
®
Outputs
General Description
The ’FCT574 is an 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 device is functionally identical to the ’FCT374 except for
the pinouts.
Features
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 ’FCT374
n TRI-STATE outputs for bus-oriented applications
n Output sink capability of 32 mA, source capability of
12 mA
n TTL input and output level compatible
n CMOS power consumption
n Standard Microcircuit Drawing (SMD) 5962-8951301
Ordering Code
Military Package Number Package Description
54FCT574DMQB J20A 20-Lead Ceramic Dual-In-Line
54FCT574FMQB W20A 20-Lead Cerpack
54FCT574LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagrams
Pin Descriptions
Pin Description
Names
D
0
–D
7
Data Inputs
CP Clock Pulse Input
(Active Rising Edge)
OE TRI-STATE Output Enable
Input (Active LOW)
O
0
–O
7
TRI-STATE Outputs
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
Pin Assignment for DIP and Flatpak
DS100966-1
Pin Assignment
for LCC
DS100966-2
October 1999
54FCT574
Octal
D-T
ype
Flip-Flop
with
TRI-ST
A
T
E
Outputs
© 1999 National Semiconductor Corporation DS100966 www.national.com