TLF9567

May 1995

54F74F574

Octal D-Type Flip-Flop with TRI-STATE

Outputs

General Description

The ’F574 is a high-speed low power octal flip-flop with a

buffered common Clock (CP) and a buffered common Out-

put Enable (OE) The information presented to the D inputs

is stored in the flip-flops on the LOW-to-HIGH Clock (CP)

transition

This device is functionally identical to the ’F374 except for

the pinouts

Features

Y

Inputs and outputs on opposite sides of package

allowing easy interface with microprocessors

Y

Useful as input or output port for microprocessors

Y

Functionally identical to ’F374

Y

TRI-STATE outputs for bus-oriented applications

Commercial

Military

Package

Package Description

Number

74F574PC

N20A

20-Lead (0300 Wide) Molded Dual-In-Line

54F574DM (Note 2)

J20A

20-Lead Ceramic Dual-In-Line

74F574SC (Note 1)

M20B

20-Lead (0300 Wide) Molded Small Outline JEDEC

74F574SJ (Note 1)

M20D

20-Lead (0300 Wide) Molded Small Outline EIAJ

54F574FM (Note 2)

W20A

20-Lead Cerpack

54F574LM (Note 2)

E20A

20-Lead Ceramic Leadless Chip Carrier Type C

Note 1

Devices also available in 13

Note 2

Logic Symbols

TLF9567 – 1

IEEEIEC

TLF9567 – 4

Unit LoadingFan Out

54F74F

Pin Names

Description

UL

HIGHLOW

Data Inputs

1010

CP

Clock Pulse Input (Active LOW)

1010

OE

TRI-STATE Output Enable Input (Active LOW)

1010

TRI-STATE Outputs

15040 (333)

b

3 mA24 mA (20 mA)

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M75Printed in U S A