54ABT241
Octal Buffer/Line Driver with TRI-STATE®Outputs
General Description
The ABT241 is an octal buffer and line driver with 3-STATE
outputs designed to be employed as a memory and address
driver, clock driver, or bus-oriented transmitter/receiver.
Features
nNon-inverting buffers
nOutput sink capability of 48 mA, source capability of
24 mA
nGuaranteed latchup protection
nHigh impedance glitch free bus loading during entire
power up and power down cycle
nNondestructive hot insertion capability
nStandard Microcircuit Drawing (SMD) 5962-9322701
Ordering Code
Military Package Number Package Description
54ABT241J-QML J20A 20-Lead Ceramic Dual-In-Line
54ABT241W-QML W20A 20-Lead Cerpack
54ABT241E-QML E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagram Pin Names Description
OE
1
Output Enable Input (Active Low)
OE
2
Output Enable Input (Active High)
I
0
–I
7
Inputs
O
0
–O
7
Outputs
OE
1
I
0–3
O
0–3
OE
2
I
4–7
O
4–7
HX ZLX Z
LH HHH H
LL LHL L
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 Cerpack
DS100215-1
Pin Assignment for LCC
DS100215-4
July 1998
54ABT241 Octal Buffer/Line Driver with TRI-STATE Outputs
© 2004 National Semiconductor Corporation DS100215 www.national.com
Absolute Maximum Ratings (Note 1)
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
(Over Comm Operating Range) −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
Note 1: Absolute maximum 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.
DC Electrical Characteristics
Symbol Parameter Min Typ Max Units V
CC
Conditions
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
=−3mA
54ABT 2.0 V Min I
OH
= −24 mA
V
OL
Output LOW Voltage 54ABT 0.55 V Min I
OL
=48mA
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 V
CC
or Ground
I
CCT
Additional I
CC
/Input Outputs Enabled 2.5 mA Max V
I
=V
CC
2.1V
Outputs 3-STATE 2.5 mA Enable Input V
I
=V
CC
2.1V
Outputs 3-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 3: For 8 bits toggling, ICCD <0.8 mA/MHz.
Note 4: Guaranteed, but not tested.
54ABT241
www.national.com 2
DC Electrical Characteristics
Symbol Parameter Min Max Units V
CC
Conditions
C
L
= 50 pF,
R
L
= 500
V
OLP
Quiet Output Maximum Dynamic V
OL
0.67 V 5.0 T
A
= 25˚C (Note 5)
V
OLV
Quiet Output Minimum Dynamic V
OL
-1.35 V 5.0 T
A
= 25˚C (Note 5)
Note 5: Max number of outputs defined as (n).n−1data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested.
AC Electrical Characteristics
Symbol Parameter T
A
= −55˚C to +125˚C Units
V
CC
= 4.5V–5.5V
C
L
=50pF
Min Max
t
PLH
Propagation Delay 0.8 5.3 ns
t
PHL
Data to Outputs 0.8 5.0
t
PZH
Output Enable 1.0 7.0 ns
t
PZL
Time 1.0 7.0
t
PHZ
Output Disable 0.8 7.9 ns
t
PLZ
Time 0.8 6.2
Capacitance
Symbol Parameter Typ Units Conditions
T
A
= 25˚C
C
IN
Input Capacitance 5.0 pF V
CC
=0V
C
OUT
(Note 6) Output Capacitance 9.0 pF V
CC
= 5.0V
Note 6: COUT is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012.
54ABT241
www.national.com3
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Ceramic Leadless Chip Carrier
Package Number E20A
54ABT241
www.national.com 4
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Ceramic Dual-In-Line
Package Number J20A
20-Lead Ceramic Flatpack
Package Number W20A
54ABT241
www.national.com5
Notes
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 AND GENERAL
COUNSEL 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 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.
BANNED SUBSTANCE COMPLIANCE
National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products
Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification
(CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2.
National Semiconductor
Americas Customer
Support Center
Email: new.feedback@nsc.com
Tel: 1-800-272-9959
National Semiconductor
Europe Customer Support Center
Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Support Center
Email: ap.support@nsc.com
National Semiconductor
Japan Customer Support Center
Fax: 81-3-5639-7507
Email: jpn.feedback@nsc.com
Tel: 81-3-5639-7560
www.national.com
54ABT241 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.