If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
Ceramic
V
CC
Pin Potential to Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Any Output
in the Disabled or
Power-Off State
in the HIGH State
−65˚C to +150˚C
−55˚C to +125˚C
−55˚C to +175˚C
−0.5V to +7.0V
−0.5V to +7.0V
−30 mA to +5.0 mA
Current Applied to Output
in LOW State (Max)
DC Latchup Source Current
Over Voltage Latchup (I/O)
twice the rated I
OL
(mA)
−500 mA
10V
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Supply Voltage
Military
Minimum Input Edge Rate
Data Input
Enable Input
−55˚C to +125˚C
+4.5V to +5.5V
(∆V/∆t)
50 mV/ns
20 mV/ns
−0.5V to 5.5V
−0.5V to V
CC
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
CD
V
OH
V
OL
I
IH
I
BVI
I
IL
V
ID
I
OZH
I
OZL
I
OS
I
CEX
I
ZZ
I
CCH
I
CCL
I
CCZ
I
CCT
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output LOW Voltage
Input HIGH Current
Input HIGH Current Breakdown Test
Input LOW Current
Input Leakage Test
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Output High Leakage Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
Additional I
CC
/Input
Outputs Enabled
Outputs TRI-STATE
Outputs TRI-STATE
I
CCD
Dynamic I
CC
(Note 4)
No Load
0.1
−100
4.75
50
−50
−275
50
100
50
30
50
2.5
2.5
50
54ABT
54ABT
54ABT
2.5
2.0
0.55
5
5
7
−5
−5
V
µA
µA
mA
µA
µA
µA
mA
µA
mA
mA
µA
mA/
MHz
Max
0.0
0 − 5.5V
0 − 5.5V
Max
Max
0.0
Max
Max
Max
Max
µA
µA
Max
Max
2.0
0.8
−1.2
ABT244
Min Typ
Max
V
V
V
V
V
V
µA
Min
Min
Min
Min
Max
Recognized HIGH Signal
Recognized LOW Signal
I
IN
= −18 mA
I
OH
= −3 mA
I
OH
= −24 mA
I
OL
= 48 mA
V
IN
= 2.7V (Note 4)
V
IN
= V
CC
V
IN
= 7.0V
V
IN
= 0.5V (Note 4)
V
IN
= 0.0V
I
ID
= 1.9 µA
All Other Pins Grounded
V
OUT
= 2.7V; OE
n
= 2.0V
V
OUT
= 0.5V; OE
n
= 2.0V
V
OUT
= 0.0V
V
OUT
= V
CC
V
OUT
= 5.5V; All Others GND
All Outputs HIGH
All Outputs LOW
OE
n
= V
CC
;
All Others at V
CC
or Ground
V
I
= V
CC
− 2.1V
Enable Input V
I
= V
CC
− 2.1V
Data Input V
I
= V
CC
− 2.1V
All Others at V
CC
or Ground
Outputs Open
OE
n
= GND, (Note 3)
One Bit Toggling, 50% Duty Cycle
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.
Note 3:
For 8 bits toggling, I
CCD
<
0.8 mA/MHz.
Note 4:
Guaranteed, but not tested.
Units
V
CC
Conditions
www.national.com
2
AC Electrical Characteristics
Symbol
Parameter
54ABT
T
A
= −55˚C to +125˚C
V
CC
= 4.5V–5.5V
C
L
= 50 pF
Min
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
Data to Outputs
Output Enable
Time
Output Disable
Time
1.0
1.0
0.8
1.2
1.2
1.0
Max
5.3
5.0
6.5
7.9
7.6
7.9
ns
ns
ns
Units
Fig.
No.
Figure 5
Figure 4
Figure 4
Capacitance
Symbol
C
IN
C
OUT
(Note 5)
Parameter
Input Capacitance
Output Capacitance
Typ
5.0
9.0
Units
pF
pF
Conditions
T
A
= 25˚C
V
CC
= 0V
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 (T
A
)
C
L
= 50 pF, 1 Output Switching
t
PHL
vs Temperature (T
A
)
C
L
= 50 pF, 1 Output Switching
DS100203-11
DS100203-12
Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.
3
www.national.com
Capacitance
(Continued)
t
PHL
vs Load Capacitance
1 Output Switching, T
A
= 25˚C
t
PLH
vs Load Capacitance
1 Output Switching, T
A
= 25˚C
DS100203-13
DS100203-14
t
PLH
vs Load Capacitance
8 Outputs Switching, T
A
= 25˚C
t
PHL
vs Load Capacitance
8 Outputs Switching, T
A
= 25˚C
DS100203-15
DS100203-16
t
PZL
vs Temperature (T
A
)
C
L
= 50 pF, 1 Output Switching
t
PLZ
vs Temperature (T
A
)
C
L
= 50 pF, 1 Output Switching
DS100203-17
DS100203-18
Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.
www.national.com
4
Capacitance
(Continued)
t
PHZ
vs Temperature (T
A
)
C
L
= 50 pF, 1 Output Switching
t
PZH
vs Temperature (T
A
)
C
L
= 50 pF, 1 Output Switching
DS100203-19
DS100203-20
t
PZH
vs Temperature (T
A
)
C
L
= 50 pF, 8 Outputs Switching
t
PHZ
vs Temperature (T
A
)
C
L
= 50 pF, 8 Outputs Switching
DS100203-21
DS100203-22
t
PZL
vs Temperature (T
A
)
C
L
= 50 pF, 8 Outputs Switching
t
PLZ
vs Temperature (T
A
)
C
L
= 50 pF, 8 Outputs Switching
DS100203-23
DS100203-24
Dashed lines represent design characteristics; for specified guarantees refer to AC Characteristics Table.
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