Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Recommended Operating
Conditions
Supply Voltage (V
’AC
’ACT
)
CC
2.0V to 6.0V
4.5V to 5.5V
b
a
0.5V to 7.0V
Supply Voltage (V
)
CC
DC Input Diode Current (I )
K
Input Voltage (V )
I
0V to V
0V to V
CC
e b
b
a
V
V
0.5V
a
20 mA
20 mA
I
I
Output Voltage (V
)
O
CC
e
V
CC
0.5V
Operating Temperature (T )
A
74AC/ACT
54AC/ACT
b
b
a
0.5V
DC Input Voltage (V )
I
0.5V to V
0.5V to V
CC
b
b
a
40 C to 85 C
§
55 C to 125 C
§
§
DC Output Diode Current (I
)
a
OK
§
e b
b
a
V
V
0.5V
a
20 mA
20 mA
O
O
Minimum Input Edge Rate (DV/Dt)
’AC Devices
e
V
CC
0.5V
a
DC Output Voltage (V
DC Output Source
)
O
0.5V
50 mA
50 mA
CC
V
V
from 30% to 70% of V
@
IN
CC
3.3V, 4.5V, 5.5V
125 mV/ns
125 mV/ns
CC
g
g
or Sink Current (I
)
O
Minimum Input Edge Rate (DV/Dt)
’ACT Devices
DC V
or Ground Current
CC
per Output Pin (I or I
CC
)
V
V
from 0.8V to 2.0V
@
GND
)
IN
4.5V, 5.5V
b
a
65 C to 150 C
CC
Storage Temperature (T
§
§
STG
Junction Temperature (T )
J
CDIP
PDIP
175 C
§
140 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 recom-
mend operation of FACTTM circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
74AC
54AC
74AC
e
e
T
A
V
T
CC
A
e a
Symbol
Parameter
T
25 C
§
Units
Conditions
A
b
a
55 C to 125 C
b a
40 C to 85 C
(V)
§
§
§
§
Typ
Guaranteed Limits
e
0.1V
V
V
V
Minimum High Level
Input Voltage
3.0
4.5
5.5
1.5
2.1
2.1
2.1
V
IH
OUT
b
2.25
2.75
3.15
3.85
3.15
3.85
3.15
3.85
V
V
V
or V
0.1V
CC
e
Maximum Low Level
Input Voltage
3.0
4.5
5.5
1.5
0.9
0.9
0.9
V
OUT
0.1V
IL
b
2.25
2.75
1.35
1.65
1.35
1.65
1.35
1.65
or V
0.1V
CC
e b
OUT
Minimum High Level
Output Voltage
3.0
4.5
5.5
2.99
4.49
5.49
2.9
4.4
5.4
2.9
4.4
5.4
2.9
4.4
5.4
I
50 mA
OH
e
*V
IN
V
IL
or V
IH
b
b
b
3.0
4.5
5.5
2.56
3.86
4.86
2.4
3.7
4.7
2.46
3.76
4.76
12 mA
V
V
I
24 mA
24 mA
OH
e
e
V
OL
Maximum Low Level
Output Voltage
3.0
4.5
5.5
0.002
0.001
0.001
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
I
50 mA
OUT
*V
IN
V or V
IL IH
3.0
4.5
5.5
0.36
0.36
0.36
0.50
0.50
0.50
0.44
0.44
0.44
12 mA
V
I
24 mA
24 mA
OL
e
I
Maximum Input
Leakage Current
V
I
V , GND
CC
IN
g
g
g
1.0
5.5
0.1
1.0
mA
*All outputs loaded; thresholds on input associated with output under test.
2
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