© Semiconductor Components Industries, LLC, 2000

August, 2000 – Rev. 7

1

Publication Order Number:

SN74LS245/D

SN74LS245

Octal Bus Transceiver

The SN74LS245 is an Octal Bus Transmitter/Receiver designed for

8-line asynchronous 2-way data communication between data buses.

Direction Input (DR) controls transmission of Data from bus A to bus

B or bus B to bus A depending upon its logic level. The Enable input

(E) can be used to isolate the buses.

LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW)

18

17

16

15

14

13

12

3

4

5

6

7

20

19

8

DIR

E

B1

B2

B3

B5

B4

B6

A1

A2

A3

A4

A5

A6

A7

910

A8 GND

12

11

B7

B8

TRUTH TABLE

INPUTS

OUTPUT

E

DIR

OUTPUT

L

L

Bus B Data to Bus A

L

H

Bus A Data to Bus B

H

X

Isolation

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

Supply Voltage

4.75

5.0

5.25

V

Operating Ambient

Temperature Range

0

25

70

°C

Output Current – High

–3.0

mA

–15

mA

Output Current – Low

24

mA

LOW

POWER

SCHOTTKY

Device

Package

Shipping

ORDERING INFORMATION

SN74LS245N

PDIP–20

1440 Units/Box

SN74LS245DW

SOIC–20

http://onsemi.com

2500/Tape & Reel

PDIP–20

N SUFFIX

CASE 738

20

1

20

1

A

= Assembly Location

WL = Wafer Lot

YY = Year

WW = Work Week

SN74LS245N

AWLYYWW

MARKING

DIAGRAMS

LS245

AWLYYWW

SOIC–20

DW SUFFIX

CASE 751D

1

1