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54ABT574 Octal D-Type Flip-Flop with TRI-STATE Outputs

July 1998

54ABT574

Octal D-Type Flip-Flop with TRI-STATE

廬

Outputs

General Description

The 鈥橝BT574 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 鈥橝BT374 except for

the pinouts.

n

TRI-STATE outputs for bus-oriented applications

n

Output sink capability of 48 mA, source capability of

24 mA

n

Guaranteed multiple output switching specifications

n

Output switching specified for both 50 pF and 250 pF

loads

n

Guaranteed simultaneous switching, noise level and

dynamic threshold performance

n

Guaranteed latchup protection

n

High impedance glitch free bus loading during entire

power up and power down cycle

n

Non-destructive hot insertion capability

n

Standard Microcircuit Drawing (SMD) 5962-9322001

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 鈥橝BT374

Ordering Code

Military

54ABT574J/883

54ABT574W/883

54ABT574E/883

Package Number

J20A

W20A

E20A

20-Lead Cerpack

20-Lead Ceramic Leadless Chip Carrier, Type C

Package Description

20-Lead Ceramic Dual-In-Line

Connection Diagrams

Pin Assignment for DIP and Flatpak

Pin Assignment

for LCC

DS100208-1

DS100208-2

Pin Descriptions

Pin

Names

D

0

鈥揇

7

CP

OE

O

0

鈥揙

7

Data Inputs

Clock Pulse Input

(Active Rising Edge)

TRI-STATE Output Enable

Input (Active LOW)

TRI-STATE Outputs

Description

FAST

廬

and TRI-STATE

廬

are registered trademarks of National Semiconductor Corporation.

漏 1998 National Semiconductor Corporation

DS100208

www.national.com

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