Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
CC
)
DC Input Diode Current (I
IK
)
V
I
e b
0.5V
V
I
e
V
CC
a
0.5V
DC Input Voltage (V
I
)
DC Output Diode Current (I
OK
)
V
O
e
0.5V
V
O
e
V
CC
a
0.5V
DC Output Voltage (V
O
)
DC Output Source
or Sink Current (I
O
)
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
)
Storage Temperature (T
STG
)
Junction Temperature (
i
JA
)
Plastic (N) 14-Lead
Plastic (M) 14-Lead
Plastic (N) 16-Lead
Plastic (M) 16-Lead
b
0.5V to
a
7.0V
b
20 mA
a
0.2 mA
b
0.5V to (V
CC
a
0.5V)
b
20 mA
a
20 mA
b
0.5V to (V
CC
a
0.5V)
g
50 mA
g
50 MA
b
65
§
C to
a
150
§
C
102
§
C/W
128
§
C/W
97
§
C/W
124
§
C/W
Recommended Operating
Conditions
Supply Voltage (V
CC
)
‘C’
‘CT’
2.0V to 6.0V
4.5V to 5.5V
Input Voltage (V
I
)
Output Voltage (V
O
)
Operating Temperature (T
A
)
CGS74C/CT
54AC/ACT
0V to V
CC
0V to V
CC
b
40
§
C to
a
85
§
C
b
55
§
C to
a
125
§
C
Input Rise and Fall Times Devices
(30% to 70% of V
CC
)
V
CC
e
3.3V
4.5V
5.5V
10.5 ns max
14.4 ns max
17.6 ns max
Input Rise and Fall Times Devices
(0.8V to 2.0V)
9.6 ns max
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 CGS circuits outside databook specifications.
DC Electrical Characteristics for CGS74C and 54AC Family Devices
Over recommended operating conditions unless specified otherwise.
CGS74C
54AC
CGS74C
Symbol
Parameter
V
CC
(V)
T
A
e a
25
§
C
T
A
e
T
A
e
Units
Conditions
b
55
§
C to
a
125
§
C
b
40
§
C to
a
85
§
C
Typ
Guaranteed Limits
V
IH
Minimum High Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
2.1
3.15
3.85
2.1
3.15
3.85
2.1
3.15
3.85
V
OUT
e
0.1V
or V
CC
b
0.1V
V
V
IL
Maximum Low Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
0.9
1.35
1.65
0.9
1.35
1.65
0.9
1.35
1.65
V
OUT
e
0.1V
or V
CC
b
0.1V
V
V
OH
Minimum High Level
Output Voltage
(Note 2)
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
OUT
e b
50
m
A
V
V
IN
e
V
IL
or V
IH
b
12 mA
I
OH
b
24 mA
b
24 mA
3.0
4.5
5.5
2.56
3.86
4.86
2.4
3.7
4.7
2.46
3.76
4.76
V
V
OL
Maximum Low Level
Output Voltage
(Note 2)
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
OUT
e
50
m
A
V
V
IN
e
V
IL
or V
IH
3.0
4.5
5.5
0.36
0.36
0.36
0.40
0.50
0.50
0.44
0.44
0.44
12 mA
24 mA
24 mA
V
I
OL
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