TLF9584

December 1994

54F74F657 Octal Bidirectional Transceiver

with 8-Bit Parity GeneratorChecker

and TRI-STATE

Outputs

General Description

The

’F657

contains

eight

non-inverting

buffers

with

TRI-STATE

outputs and an 8-bit parity generatorchecker

It is intended for bus-oriented applications The buffers have

a guaranteed current sinking capability of 24 mA (20 mA mil)

at the A port and 64 mA (48 mA mil) at the B port

Features

Y

300 Mil 24-pin slimline DIP

Y

Combines ’F245 and ’F280A functions in one package

Y

TRI-STATE outputs

Y

B Outputs sink 64 mA (48 mA mil)

Y

12 mA source current B side

Y

Input diodes for termination effects

Commercial

Military

Package

Package Description

Number

74F657SPC

N24C

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

54F657SDM (Note 2)

J24F

24-Lead (0300 Wide) Ceramic Dual-In-Line

75F657SC (Note 1)

M24B

24-Lead (0300 Wide) Molded Small Outline JEDEC

54F657FM (Note 2)

W24C

24-Lead Cerpack

54F657LM (Note 2)

E28A

24-Lead Ceramic Leadless Chip Carrier Type C

Note 1

Devices also available in 13

Note 2

Logic Symbols

IEEEIEC

TLF9584 – 5

TLF9584 – 1

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M75Printed in U S A