54FCT574

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

Data Inputs

CP

Clock Pulse Input

(Active Rising Edge)

OE

TRI-STATE Output Enable

Input (Active LOW)

O

TRI-STATE Outputs

Pin Assignment for DIP and Flatpak

DS100966-1

Pin Assignment

for LCC

DS100966-2

October 1999

© 1999 National Semiconductor Corporation

DS100966

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