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
’ACT
)
CC
4.5V to 5.5V
b
Supply Voltage (V
)
CC
0.5V to 7.0V
Input Voltage (V )
I
0V to V
0V to V
CC
DC Input Diode Current (I
)
IK
Output Voltage (V
)
O
CC
e b
b
a
V
I
V
I
0.5V
a
20 mA
20 mA
Operating Temperature (T )
A
e
V
CC
0.5V
b
b
a
40 C to 85 C
74ACT
54ACT
§
55 C to 125 C
§
§
b
b
a
0.5V
DC Input Voltage (V )
I
0.5V to V
CC
a
§
DC Output Diode Current (I
)
OK
Minimum Input Edge Rate (DV/Dt)
’ACT Devices
e b
b
a
V
V
0.5V
a
20 mA
20 mA
O
O
e
V
CC
0.5V
V
V
from 0.8V to 2.0V
@
IN
a
CC
DC Output Voltage (V
)
O
0.5V to V
0.5V
4.5V, 5.5V
125 mV/ns
CC
g
DC Output Source or Sink Current (I
)
O
50 mA
DC V
or Ground Current
CC
g
per Output Pin (I or I
CC
)
50 mA
GND
)
b
a
65 C to 150 C
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 Electrical Characteristics
74ACT
54ACT
74ACT
e
e
T
A
V
CC
(V)
T
A
55 C to 125 C
e
Symbol
Parameter
T
25 C
§
Units
Conditions
A
b
a
b a
40 C to 85 C
§
§
Guaranteed Limits
§
§
Typ
e
0.1V
V
V
V
Minimum High Level
Input Voltage
4.5
5.5
1.5
1.5
2.0
2.0
2.0
2.0
2.0
2.0
V
IH
OUT
V
V
V
b
or V
CC
0.1V
e
Maximum Low Level
Input Voltage
4.5
4.5
1.5
1.5
0.8
0.8
0.8
0.8
0.8
0.8
V
OUT
or V
0.1V
0.1V
IL
b
CC
e b
OUT
Minimum High Level
4.5 4.49
5.49
4.4
5.4
4.4
5.4
4.4
5.4
I
50 mA
OH
e
*V
IN
OH
V
IL
or V
IH
b
b
4.5
3.86
4.86
3.70
4.70
3.76
4.76
I
24 mA
24 mA
V
V
e
e
V
OL
Maximum Low Level
Output Voltage
4.5 0.001 0.1
5.5 0.001 0.1
0.1
0.1
0.1
0.1
I
50 mA
OUT
*V
V or V
IL IH
IN
4.5
5.5
0.36
0.36
0.50
0.50
0.44
0.44
I
24 mA
24 mA
OL
V
I
I
Maximum Input
Leakage Current
IN
e
e
g
g
g
g
g
5.5
5.5
0.1
0.5
1.0
1.0
5.0
mA
mA
V
V
, GND
CC
I
Maximum TRI-STATE Current
V
V
V , V
IL IH
OZ
I
g
10.0
e
V
, GND
CC
O
e
b
2.1V
I
I
I
I
Maximum I /Input
CC
5.5
5.5
5.5
0.6
1.6
50
1.5
75
mA
mA
mA
V
V
V
V
V
CC
CCT
OLD
OHD
CC
I
e
²
Minimum Dynamic
Output Current
1.65V Max
e
3.85V Min
OLD
OHD
b
b
50
75
e
Maximum Quiescent
Supply Current
V
CC
IN
5.5
8.0
160
80
mA
or GND
*All outputs loaded; thresholds on input associated with output under test.
²
Maximum test duration 2.0 ms, one output loaded at a time.
@ @
limit for 54ACT 25 C is identical to 74ACT 25 C.
§ §
Note: I
CC
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