INTEGRAL IN74ALS240AN Datasheet

TECHNICAL DATA

OCTAL BUFFER / DRIVER
WITH 3-STATE OUTPUTS

This octal buffer/driver is designed specially to
improve both the performance and density of 3-state
memory address drivers, clock drivers and bus­oriented receivers and transmitters. When this device is
used with the ‘ALS241, ‘AS241A, ‘ALS244 and
AS244A, the circuit designer has a choice of selected
combinations of inverting and noninverting outputs,
symmetrical active-low output-enable (OE) inputs and
complementary OE and OE inputs. This device features
high fan-out and improved fan-in.

The IN74ALS240A is characterized for operation from
0oC to 70oC.

ORDERING INFORMATION

IN74LS240AN Plastic
IN74ALS240AD SOIC
T

A

= 0° to 70° C for all

packages

Logic Symbol Logic Diagram (Positive Logic)

IN74ALS240A

IN74ALS240A

2

ABSOLUTE MAXIMUM RATINGS

OVER OPERATING FREE-AIR TEMPERATURE RANGE

Su

pply

voltage, Vcc 7 V

Input voltage, V

I

7 V
Voltage applied to a disabled 3-state output 5.5V
Operating free-air temperature range, T

A

0oC to 70oC.

Storage temperature range-65

o

C to 150oC

RECOMMENDED OPERATING CONDITIONS

MIN NOM MAX UNIT

V

CC

Supply voltage 4.5 5 5.5 V

V

IH

High-level input voltage2V

V

IL

Low-level input voltage 0.8 V

I

OH

High-level output current -15 mA

I

OL

Low-level output current 24 mA

T

A

Operating free-air temperature 0 70

o

C

FUNCTION TABLE

INPUTS OUTPUT

OE

AY

LH L
LLH

HX Z

PIN ASSIGNMENT