Datasheet 5962-8976701RA, 5962-89767012A Datasheet (NSC)

54FCT540
Octal Buffer/Line Driver with TRI-STATE

®

Outputs

General Description

The ’FCT540 is an octal buffer/line drivers designed to be
employed as memory and address drivers, clock drivers and
bus oriented transmitter/receivers.

These devices are similar in function to the ’FCT240 while
providing flow-through architecture (inputs on opposite side
from outputs).Thispinout arrangement makes these devices
especially useful as output ports for microprocessors, allow­ing ease of layout and greater PC board density.

Features

n TRI-STATE inverting outputs
n Inputs and outputs opposite side of package, allowing

easier interface to microprocessors

n TTL input and output level compatible
n CMOS power consumption
n Output sink capability of 48mA, source capability of 12

mA

n Standard Microcircuit Drawing (SMD) 5962-8976701

Logic Symbol

Inputs Outputs

OE

1

OE

2

I

LLH L
HXX Z
XHX Z
LLL H

H

=

HIGH Voltage Level
L=LOW Voltage Level
X=Immaterial
Z=High Impedance

Connection Diagrams

TRI-STATE®is a registered trademark of National Semiconductor Corporation.
FACT

™

is a trademark of Fairchild Semiconductor Corporation.

IEEE/IEC

DS100970-1

Pin Assignment

for DIP and Flatpak

DS100970-3

Pin Assignment for LCC

DS100970-2

October 1999

54FCT540 Octal Buffer/Line Driver with TRI-STATE Outputs

© 1999 National Semiconductor Corporation DS100970 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Supply Voltage (V

CC

) −0.5V to +7.0V

DC Input Diode Current (I

IK

)

V

I

=

−0.5V −20 mA

V

I

=

V

CC

+ 0.5V +20 mA

DC Input Voltage (V

I

) −0.5V to VCC+ 0.5V

DC Output Diode Current (I

OK

)

V

O

=

−0.5V −20 mA

V

O

=

V

CC

+ 0.5V +20 mA

DC Output Voltage (V

O

) −0.5V to VCC+ 0.5V

DC Output Source

or Sink Current (I

O

)

±

50 mA

DC V

CC

or Ground Current

per Output Pin (I

CC

or I

GND

)

±

50 mA

Storage Temperature (T

STG

) −65˚C to +150˚C

Junction Temperature (T

J

)

CDIP 175˚C

Recommended Operating
Conditions

Supply Voltage (VCC)

’FCT 2.0V to 6.0V

Input Voltage (V

I

) 0VtoV

CC

Output Voltage (VO) 0VtoV

CC

Operating Temperature (TA)

54FCT −55˚C to +125˚C

Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recom­mend operation of FACT

®

circuits outside databook specifications.

DC Characteristics for ’FCT Family Devices

Symbol Parameter FCT540 Units V

CC

Conditions

Min Max

V

IH

Input HIGH Voltage 2.0 V Recognized HIGH Signal

V

IL

Input LOW Voltage 0.8 V Recognized LOW Signal

V

CD

Input Clamp Diode Voltage −1.2 V Min I

IN

=

−18 mA

V

OH

Output HIGH Voltage 54FCT 4.3 V Min I

OH

=

−300 µA

54FCT 2.4 V Min I

OH

=

−12 mA

V

OL

Output LOW Voltage 54FCT 0.2 V Min I

OL

=

300 µA

54FCT 0.55 V Min I

OL

=

48 mA

I

IH

Input HIGH Current 5 µA Max V

IN

=

V

CC

I

IL

Input LOW Current −5 µA Max V

IN

=

0.0V

I

OZH

Output Leakage Current 10 µA Max V

OUT

=

5.5V; OE

n

=

2.0V

I

OZL

Output Leakage Current −10 µA Max V

OUT

=

0.0V; OE

n

=

2.0V

I

OS

Output Short-Circuit Current -60 mA Max V

OUT

=

0.0V

I

CCQ

Quiescent Power
Supply Current

1.5 mA Max V

IN

<

0.2V or VIN5.3V, VCC=

5.5V

∆I

CC

Quiescent Power
Supply Current

2.0 mA Max V

I

=

V

CC

− 2.1V

I

CCD

Dynamic I

CC

0.4 mA/
MHz

Max VCC= 5.5V, Outputs Open,

One Bit Toggling, 50%Duty
Cycle, OE

n

=

GND

I

CC

Total Power Supply
Current

6.0 mA Max VCC= 5.5V, Outputs Open, fI

= 10MHz, OE

n

=

GND, One

Bit Toggling, 50%Duty Cycle

Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.

54FCT540

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AC Electrical Characteristics

54FCT

T

A

=

−55˚C to +125˚C

Symbol Parameter V

CC

=

4.5V–5.5V Units

C

L

=

50 pF

Min Max

t

PLH

Propagation Delay 2.0 9.5 ns

t

PHL

Data to Outputs 2.0 9.5

t

PZH

Output Enable Time 2.0 12.5 ns

t

PZL

2.0 12.5

t

PHZ

Output Disable Time 2.0 12.5 ns

t

PLZ

2.0 12.5

Capacitance

Symbol Parameter Typ Units Conditions

C

IN

Input Capacitance 4.5 pF V

CC

=

OPEN

C

PD

Power Dissipation 30.0 pF V

CC

=

5.0V

Capacitance

54FCT540

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Physical Dimensions inches (millimeters) unless otherwise noted

20-Terminal Ceramic Leadless Chip Carrier (L)

NS Package Number E20A

20-Lead Ceramic Dual-In-Line Package (D)

NS Package Number J20A

54FCT540

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

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systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.

2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.

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20-Lead Ceramic Flatpak (F)

NS Package Number W20A

54FCT540 Octal Buffer/Line Driver with TRI-STATE Outputs

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.