Datasheet 5962-9214701VSA, 5962-9214701V2A, 5962-9214701QSA, 5962-9214701QRA, 5962-9214701Q2A Datasheet (NSC)

54ABT244
Octal Buffer/Line Driver with TRI-STATE

®

Outputs

General Description

The ’ABT244 is an octal buffer and line driver with
TRI-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus-oriented transmitter/
receiver.

Features

n Non-inverting buffers
n Output sink capability of 48 mA, source capability of

24 mA

n Output switching specified for both 50 pF and 250 pF

loads

n Guaranteed simultaneous switching, noise level and

dynamic threshold performance

n Guaranteed latchup protection
n High impedance glitch free bus loading during entire

power up and power down cycle

n Nondestructive hot insertion capability
n Disable time less than enable time to avoid bus

contention

n Standard Microcircuit Drawing (SMD) 5962-9214701

Ordering Code

Military Package Package Description

Number

54ABT244J-QML J20A 20-Lead Ceramic Dual-In-Line
54ABT244W-QML W20A 20-Lead Cerpack
54ABT244E-QML E20A 20-Lead Ceramic Leadless Chip Carrier, Type C

Connection Diagrams

Pin

Names

Description

OE

1

,OE2Output Enable Input

(Active Low)

I

0–I7

Inputs

O

0–O7

Outputs

Truth Table

OE1I

0–3O0–3OE2I4–7O4–7

HXZHXZ
LHHLHH
LLLLLL

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

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

Pin Assignment for

DIP and Flatpak

DS100203-1

Pin Assignment for LCC

DS100203-2

July 1998

54ABT244 Octal Buffer/Line Driver with TRI-STATE Outputs

© 1998 National Semiconductor Corporation DS100203 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.

Storage Temperature −65˚C to +150˚C
Ambient Temperature under Bias −55˚C to +125˚C
Junction Temperature under Bias

Ceramic −55˚C to +175˚C

V

CC

Pin Potential to Ground Pin −0.5V to +7.0V
Input Voltage (Note 2) −0.5V to +7.0V
Input Current (Note 2) −30 mA to +5.0 mA
Voltage Applied to Any Output

in the Disabled or
Power-Off State −0.5V to 5.5V
in the HIGH State −0.5V to V

CC

Current Applied to Output

in LOW State (Max) twice the rated I

OL

(mA)
DC Latchup Source Current −500 mA
Over Voltage Latchup (I/O) 10V

Recommended Operating
Conditions

Free Air Ambient Temperature

Military −55˚C to +125˚C

Supply Voltage

Military +4.5V to +5.5V

Minimum Input Edge Rate (∆V/∆t)

Data Input 50 mV/ns
Enable Input 20 mV/ns

DC Electrical Characteristics

Symbol Parameter ABT244 Units V

CC

Conditions

Min Typ 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 54ABT 2.5 V Min I

OH

=

−3 mA

54ABT 2.0 V Min I

OH

=

−24 mA

V

OL

Output LOW Voltage 54ABT 0.55 V Min I

OL

=

48 mA

I

IH

Input HIGH Current 5 µA Max V

IN

=

2.7V (Note 4)

5V

IN

=

V

CC

I

BVI

Input HIGH Current Breakdown Test 7 µA Max V

IN

=

7.0V

I

IL

Input LOW Current −5 µA Max V

IN

=

0.5V (Note 4)

−5 V

IN

=

0.0V

V

ID

Input Leakage Test 4.75 V 0.0 I

ID

=

1.9 µA

All Other Pins Grounded

I

OZH

Output Leakage Current 50 µA 0 − 5.5V V

OUT

=

2.7V; OE

n

=

2.0V

I

OZL

Output Leakage Current −50 µA 0 − 5.5V V

OUT

=

0.5V; OE

n

=

2.0V

I

OS

Output Short-Circuit Current −100 −275 mA Max V

OUT

=

0.0V

I

CEX

Output High Leakage Current 50 µA Max V

OUT

=

V

CC

I

ZZ

Bus Drainage Test 100 µA 0.0 V

OUT

=

5.5V; All Others GND

I

CCH

Power Supply Current 50 µA Max All Outputs HIGH

I

CCL

Power Supply Current 30 mA Max All Outputs LOW

I

CCZ

Power Supply Current 50 µA Max OE

n

=

V

CC

;

All Others at VCCor Ground

I

CCT

Additional ICC/Input Outputs Enabled 2.5 mA Max V

I

=

V

CC

− 2.1V

Outputs TRI-STATE 2.5 mA Enable Input V

I

=

V

CC

− 2.1V

Outputs TRI-STATE 50 µA Data Input V

I

=

V

CC

− 2.1V

All Others at V

CC

or Ground

I

CCD

Dynamic I

CC

No Load mA/ Max Outputs Open

(Note 4) 0.1 MHz OE

n

=

GND, (Note 3)

One Bit Toggling, 50%Duty Cycle

Note 1: Absolutemaximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions
is not implied.

Note 2: Either voltage limit or current limit is sufficient to protect inputs.
Note 3: For 8 bits toggling, I

CCD

<

0.8 mA/MHz.

Note 4: Guaranteed, but not tested.

www.national.com 2

AC Electrical Characteristics

Symbol Parameter 54ABT Units Fig.

No.

T

A

=

−55˚C to +125˚C

V

CC

=

4.5V–5.5V

C

L

=

50 pF

Min Max

t

PLH

Propagation Delay 1.0 5.3 ns

Figure 5

t

PHL

Data to Outputs 1.0 5.0

t

PZH

Output Enable 0.8 6.5 ns

Figure 4

t

PZL

Time 1.2 7.9

t

PHZ

Output Disable 1.2 7.6 ns

Figure 4

t

PLZ

Time 1.0 7.9

Capacitance

Symbol Parameter Typ Units Conditions

T

A

=

25˚C

C

IN

Input Capacitance 5.0 pF V

CC

=

0V

C

OUT

(Note 5) Output Capacitance 9.0 pF V

CC

=

5.0V

Note 5: C

OUT

is measured at frequency f=1 MHz, per MIL-STD-883B, Method 3012.

t

PLH

vs Temperature (TA)

C

L

=

50 pF, 1 Output Switching

DS100203-11

t

PHL

vs Temperature (TA)

C

L

=

50 pF, 1 Output Switching

DS100203-12

Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.

3 www.national.com

Capacitance (Continued)

t

PLH

vs Load Capacitance

1 Output Switching, T

A

=

25˚C

DS100203-13

t

PHL

vs Load Capacitance

1 Output Switching, T

A

=

25˚C

DS100203-14

t

PLH

vs Load Capacitance

8 Outputs Switching, T

A

=

25˚C

DS100203-15

t

PHL

vs Load Capacitance

8 Outputs Switching, T

A

=

25˚C

DS100203-16

t

PZL

vs Temperature (TA)

C

L

=

50 pF, 1 Output Switching

DS100203-17

t

PLZ

vs Temperature (TA)

C

L

=

50 pF, 1 Output Switching

DS100203-18

Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.

www.national.com 4

Capacitance (Continued)

t

PZH

vs Temperature (TA)

C

L

=

50 pF, 1 Output Switching

DS100203-19

t

PHZ

vs Temperature (TA)

C

L

=

50 pF, 1 Output Switching

DS100203-20

t

PZH

vs Temperature (TA)

C

L

=

50 pF, 8 Outputs Switching

DS100203-21

t

PHZ

vs Temperature (TA)

C

L

=

50 pF, 8 Outputs Switching

DS100203-22

t

PZL

vs Temperature (TA)

C

L

=

50 pF, 8 Outputs Switching

DS100203-23

t

PLZ

vs Temperature (TA)

C

L

=

50 pF, 8 Outputs Switching

DS100203-24

Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.

5 www.national.com

Capacitance (Continued)

t

PZL

vs Load Capacitance

8 Outputs Switching

T

A

=

25˚C

DS100203-25

t

PZH

vs Load Capacitance

8 Outputs Switching

T

A

=

25˚C

DS100203-26

t

PLH

and t

PHL

vs Number

Outputs Switching V

CC

=

5.0V,

T

A

=

25˚C, C

L

=

50 pF

DS100203-27

ICCvs Frequency,

Average, T

A

=

25˚C,

All Outputs Unloaded/Unterminated

DS100203-28

Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.

www.national.com 6

AC Loading AC Waveforms

DS100203-3

*Includes jig and probe capacitance

FIGURE 1. Standard AC Test Load

DS100203-5

FIGURE 2. Test Input Signal Levels

Amplitude Rep. Rate t

W

t

r

t

f

3.0V 1 MHz 500 ns 2.5 ns 2.5 ns

FIGURE 3. Test Input Signal Requirements

DS100203-6

FIGURE 4. TRI-STATE Output HIGH

and LOW Enable and Disable Times

DS100203-7

FIGURE 5. Propagation Delay Waveforms for

Inverting and Non-Inverting Functions

7 www.national.com

8

Physical Dimensions inches (millimeters) unless otherwise noted

20-Terminal Ceramic Chip Carrier (L)

NS Package Number E20A

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

NS Package Number J20A

9 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.

National Semiconductor
Corporation

Americas
Tel: [phone]
Fax: [phone]
Email: [e-mail]

www.national.com

National Semiconductor
Europe

Fax: [phone]

Email: [e-mail]
Deutsch Tel: [phone]
English Tel: [phone]
Français Tel: [phone]
Italiano Tel: [phone]

National Semiconductor
Asia Pacific Customer
Response Group

Tel: [phone]
Fax: [phone]
Email: [e-mail]

National Semiconductor
Japan Ltd.

Tel: [phone]
Fax: [phone]

20-Lead Ceramic Flatpak (F)

NS Package Number W20A

54ABT244 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.