74VHC139 STMicroelectronics, 74VHC139 Datasheet - Page 4

• Manufacturer Part Number: 74VHC139
• Description: DUAL 2 TO 4 DECODER/DEMULTIPLEXER
• Manufacturer: STMicroelectronics

74VHC138
AC ELECTRICAL CHARACTERISTICS (Input t
(*) Voltage range is 3.3V 0.3V
(**) Voltage range is 5V 0.5V
CAPACITIVE CHARACTERISTICS
1) C
Test Circuit).Average operating current can be obtained by the following equation. I
TEST CIRCUIT
C
R
4/8
Symb ol
Symb ol
L
T
= 15/50 pF or equivalent (includes jig and probe capacitance)
= Z
C
t
t
t
t
t
t
PD
C
PLH
PHL
PLH
PHL
PLH
PHL
PD
IN
OUT
isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
of pulse generator (typically 50 )
Propagation Delay
Time
A, B, C to Y
Propagation Delay
Time
G1 to Y
Propagation Delay
Time
G2A, G2B to Y
Input Capacitance
Power Dissipation
Capacitance (note 1)
Parameter
Parameter
5.0
5.0
5.0
5.0
5.0
5.0
3.3
3.3
3.3
3.3
3.3
3.3
V
(V)
CC
(**)
(**)
(**)
(**)
(**)
(**)
(*)
(*)
(*)
(*)
(*)
(*)
T est Cond ition s
Test Co ndition
(pF )
C
15
50
15
50
15
50
15
50
15
50
15
50
L
r
= t
f
=3 ns)
CC
(opr) = C
Min.
Min.
PD
T
T
V
A
A
CC
Typ .
Typ .
= 25
= 25
10.0
10.6
10.7
8.2
5.7
7.2
8.1
5.6
7.1
8.2
5.8
7.3
34
4
f
IN
+ I
o
o
CC
C
C
Value
Value
Max.
Max.
11.4
15.8
10.1
12.8
16.3
10.1
11.4
14.9
10.1
8.1
8.1
8.1
10
-40 to 85
-40 to 85
Min .
Min .
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max.
Max.
13.5
18.0
11.5
15.0
18.5
11.5
13.5
17.0
11.5
9.5
9.5
9.5
10
o
o
C
C
Un it
Un it
pF
ns
ns
ns
pF