Rev.3.00, Jul.15.2005, page 1 of 6

HD74LS243

Quadruple Bus Transceivers (with three-state outputs)

REJ03D0462–0300

Rev.3.00

Jul.15.2005

Features

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LS243FPEL

SOP-14 pin (JEITA)

PRSP0014DF-B

(FP-14DAV)

FP

EL (2,000 pcs/reel)

Pin Arrangement

(Top view)

GBA

NC

1B

3B

2B

GAB

GND

NC

1A

2A

3A

4A

4B

1

2

3

4

5

6

7

14

8

9

10

11

12

13

Function Table

Control input

Data port status

GAB

GBA

A

B

H

H

Output

Input

L

H

*

H

L

Isolated

Isolated

L

L

Input

Output

Notes: 1. H; high level, L; low level

2. *; Possibly destructive oscillation may occur if the transceivers are enabled in both directions at once.