Datasheet 5962-8769501RA, 5962-8769501SA, 5962-87695012A, 54AC540MDA, 54AC540FM-MLS Datasheet (NSC)

54AC540
Octal Buffer/Line Driver with TRI-STATE

®

Outputs

General Description

The ’AC540 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 ’AC240 while
providing flow-through architecture (inputs on opposite side
from outputs).Thispinoutarrangementmakes these devices
especially useful as output ports for microprocessors, allow­ing ease of layout and greater PC board density.

Features

n ICCand IOZreduced by 50

%

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

easier interface to microprocessors

n Output source/sink 24 mA
n Standard Military Drawing 54AC540: 5962-8769501

Logic Symbol Truth Table

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

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

™

is a trademark of Fairchild Semiconductor Corporation.

IEEE/IEC

DS100293-1

July 1998

54AC540 Octal Buffer/Line Driver with TRI-STATE Outputs

© 1998 National Semiconductor Corporation DS100293 www.national.com

Connection Diagrams

Pin Assignment

for DIP and Flatpak

DS100293-3

Pin Assignment for LCC

DS100293-2

www.national.com 2

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)

’AC 2.0V to 6.0V

Input Voltage (V

I

) 0VtoV

CC

Output Voltage (VO) 0VtoV

CC

Operating Temperature (TA)

54AC −55˚C to +125˚C

Minimum Input Edge Rate (∆V/∆t)

’AC Devices
V

IN

from 30%to 70%of V

CC

V

CC

@

3.3V, 4.5V, 5.5V 125 mV/ns

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 ’AC Family Devices

54AC

Symbol Parameter V

CC

T

A

=

Units Conditions

(V) −55˚C to +125˚C

Guaranteed Limits

V

IH

Minimum High Level 3.0 2.1 V

OUT

=

0.1V

Input Voltage 4.5 3.15 V or V

CC

− 0.1V

5.5 3.85

V

IL

Maximum Low Level 3.0 0.9 V

OUT

=

0.1V

Input Voltage 4.5 1.35 V or V

CC

− 0.1V

5.5 1.65

V

OH

Minimum High Level 3.0 2.9 I

OUT

=

−50 µA

Output Voltage 4.5 4.4 V

5.5 5.4
(Note 2)

V

IN

=

V

IL

or V

IH

3.0 2.4 I

OH

=

−12 mA

4.5 3.7 V I

OH

=

−24 mA

5.5 4.7 I

OH

=

−24 mA

V

OL

Maximum Low Level 3.0 0.1 I

OUT

=

50 µA

Output Voltage 4.5 0.1 V

5.5 0.1
(Note 2)

V

IN

=

V

IL

or V

IH

3.0 0.50 I

OL

=

12 mA

4.5 0.50 V I

OL

=

24 mA

5.5 0.50 I

OL

=

24 mA

I

IN

Maximum Input 5.5

±

1.0 µA V

I

=

V

CC

, GND

Leakage Current

I

OZ

Maximum TRI-STATE VI(OE)=VIL,V

IH

Current 5.5

±

5.0 µA V

I

=

V

CC

, GND

V

O

=

V

CC

, GND

3 www.national.com

DC Characteristics for ’AC Family Devices (Continued)

54AC

Symbol Parameter V

CC

T

A

=

Units Conditions

(V) −55˚C to +125˚C

Guaranteed Limits

(Note 3)

I

OLD

Minimum Dynamic 5.5 50 mA V

OLD

=

1.65V Max

I

OHD

Output Current 5.5 −50 mA V

OHD

=

3.85V Min

I

CC

Maximum Quiescent 5.5 80.0 µA V

IN

=

V

CC

Supply Current or GND

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.
Note 4: I

IN

and I

CC

@

3.0V are guaranteed to be less than or equal to the respective limit@5.5V VCC.

I

CC

for 54AC@25˚C is identical to 74AC@25˚C.

AC Electrical Characteristics

54AC

V

CC

T

A

=

−55˚C

Symbol Parameter (V) to +125˚C Units

(Note 5) C

L

=

50 pF

Min Max

t

PLH

Propagation Delay 3.3 1.0 9.0 ns
Data to Output 5.0 1.5 7.0

t

PHL

Propagation Delay 3.3 1.0 8.0 ns
Data to Output 5.0 1.5 6.5

t

PZH

Output Enable Time 3.3 1.0 13.0 ns

5.0 1.5 10.0

t

PZL

Output Enable Time 3.3 1.0 12.0 ns

5.0 1.5 9.0

t

PHZ

Output Disable Time 3.3 1.0 15.5 ns

5.0 1.5 12.0

t

PLZ

Output Disable Time 3.3 1.0 12.0 ns

5.0 1.5 10.0

Note 5: Voltage Range 3.3 is 3.3V±0.3V
Voltage Range 5.0 is 5.0V

±

0.5V

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

www.national.com 4

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

5 www.national.com

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

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE­VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI­CONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or 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 in 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

54AC540 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.