74VHC138
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Table 6: DC Specifications
Table 7: AC Electrical Characteristics (Input t
r
= t
f
= 3ns)
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5.0V ±
0.5V
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
V
IH
High Level Input
Voltage
2.0 1.5 1.5 1.5
V
3.0 to
5.5
0.7V
CC
0.7V
CC
0.7V
CC
V
IL
Low Level Input
Voltage
2.0 0.5 0.5 0.5
V
3.0 to
5.5
0.3V
CC
0.3V
CC
0.3V
CC
V
OH
High Level Output
Voltage
2.0
I
O
=-50 µA
1.9 2.0 1.9 1.9
V
3.0
I
O
=-50 µA
2.9 3.0 2.9 2.9
4.5
I
O
=-50 µA
4.4 4.5 4.4 4.4
3.0
I
O
=-4 mA
2.58 2.48 2.4
4.5
I
O
=-8 mA
3.94 3.8 3.7
V
OL
Low Level Output
Voltage
2.0
I
O
=50 µA
0.0 0.1 0.1 0.1
V
3.0
I
O
=50 µA
0.0 0.1 0.1 0.1
4.5
I
O
=50 µA
0.0 0.1 0.1 0.1
3.0
I
O
=4 mA
0.36 0.44 0.55
4.5
I
O
=8 mA
0.36 0.44 0.55
I
I
Input Leakage
Current
0 to
5.5
V
I
= 5.5V or GND
± 0.1 ± 1 ± 1 µA
I
CC
Quiescent Supply
Current
5.5
V
I
= V
CC
or GND
44040µA
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
C
L
(pF)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
t
PLH
t
PHL
Propagation Delay
Time
A, B, C, to Y
3.3
(*)
15 8.2 11.4 1.0 13.0 1.0 13.0
ns
3.3
(*)
50 10.0 15.8 1.0 18.0 1.0 18.0
5.0
(**)
15 5.7 8.1 1.0 9.5 1.0 9.5
5.0
(**)
50 7.2 10.1 1.0 11.5 1.0 11.5
t
PLH
t
PHL
Propagation Delay
Time
G to Y
3.3
(*)
15 8.1 12.8 1.0 15.0 1.0 15.0
ns
3.3
(*)
50 10.6 16.3 1.0 18.5 1.0 18.5
5.0
(**)
15 5.6 8.1 1.0 9.5 1.0 9.5
5.0
(**)
50 7.1 10.1 1.0 11.5 1.0 11.5
t
PLH
t
PHL
Propagation Delay
Time
G2A
, G2B to Y
3.3
(*)
15 8.2 11.4 1.0 13.5 1.0 13.5
ns
3.3
(*)
50 10.7 14.9 1.0 17.0 1.0 17.0
5.0
(**)
15 5.8 8.1 1.0 9.5 1.0 9.5
5.0
(**)
50 7.3 10.1 1.0 11.5 1.0 11.5
