tc74vhc238f TOSHIBA Semiconductor CORPORATION, tc74vhc238f Datasheet - Page 5

• Manufacturer Part Number: tc74vhc238f
• Description: 3-to-8 Line Decoder
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Input Equivalent Circuit
INPUT
AC Characteristics
Propagation delay
time
(A, B, C-Y)
Propagation delay
time
(G1-Y)
Propagation delay
time
( 2
Input capacitance
Power dissipation
capacitance
Note: C
G -Y)
Characteristics
current consumption without load.
Average operating current can be obtained by the equation:
PD
I
is defined as the value of the internal equivalent capacitance which is calculated from the operating
CC (opr)
= C
PD
Symbol
(input: t
C
t
t
t
t
t
t
C
pLH
pHL
pLH
pHL
pLH
pHL
·V
PD
IN
CC
·f
IN
r
+ I
= t
CC
f
―
―
―
= 3 ns)
Test Condition
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
V
―
CC
(V)
5
C
L
15
50
15
50
15
50
15
50
15
50
15
50
(Note)
(pF)
Min
―
―
―
―
―
―
―
―
―
―
―
―
―
―
TC74VHC238F/FN/FT/FK
Ta = 25°C
Typ.
10.5
10.6
10.6
8.0
5.5
7.0
8.1
5.4
6.9
8.1
5.7
7.2
37
4
Max
12.3
15.8
10.1
12.8
16.3
10.1
12.3
15.8
10.1
8.1
8.1
8.1
―
―
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
Ta = −40 to
―
―
85°C
2007-01-15
14.5
18.0
11.5
15.0
18.5
11.5
14.5
18.0
11.5
Max
9.5
9.5
9.5
10
―
Unit
pF
pF
ns
ns
ns