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74VCXH245
AC Electrical Characteristics (Note 6)
Note 6: For C
L
50 pF, add approximately 300 ps to the AC maximum specification.
Note 7: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (t
OSHL
) or LOW-to-HIGH (t
OSLH
).
Dynamic Switching Characteristics
Capacitance
Symbol Parameter Conditions
V
CC
T
A
40 C to 85 C
Units
Figure
(V) Min Max Number
t
PHL
, Propagation Delay C
L
30 pF, R
L
500 3.3 0.3 0.6 3.5
ns
Figures
1, 2
t
PLH
A
n
to B
n
or B
n
to A
n
2.5 0.2 0.8 4.2
1.8 0.15 1.5 8.4
C
L
15 pF, R
L
2k 1.5 0.1 1.0 16.8
Figures
5, 6
1.2 42.0
t
PZL
, Output Enable Time C
L
30 pF, R
L
500 3.3 0.3 0.6 4.5
ns
Figures
1, 3, 4
t
PZH
2.5 0.2 0.8 5.6
1.8 0.15 1.5 9.8
C
L
15 pF, R
L
2k 1.5 0.1 1.0 19.6
Figures
5, 7, 8
1.2 49.0
t
PLZ
, Output Disable Time C
L
30 pF, R
L
500 3.3 0.3 0.6 3.6
ns
Figures
1, 3, 4
t
PHZ
2.5 0.2 0.8 4.0
1.8 0.15 1.5 7.2
C
L
15 pF, R
L
2k 1.5 0.1 1.0 14.4
Figures
5, 7, 8
1.2 36.0
t
OSHL
Output to Output Skew C
L
30 pF, R
L
500 3.3 0.3 0.5
ns
t
OSLH
(Note 7) 2.5 0.2 0.5
1.8 0.15 0.75
C
L
15 pF, R
L
2k 1.5 0.1 1.5
1.2 1.5
Symbol Parameter Conditions
V
CC
T
A
25 C
Units
(V) Typical
V
OLP
Quiet Output Dynamic Peak V
OL
C
L
30 pF, V
IH
V
CC
, V
IL
0V 1.8 0.3
V2.5 0.7
3.3 1.0
V
OLV
Quiet Output Dynamic Valley V
OL
C
L
30 pF, V
IH
V
CC
, V
IL
0V 1.8 0.3
V2.5 0.7
3.3 1.0
V
OHV
Quiet Output Dynamic Valley V
OH
C
L
30 pF, V
IH
V
CC
, V
IL
0V 1.8 1.3
V2.5 1.7
3.3 2.0
Symbol Parameter Conditions
T
A
25 C
Units
Typical
C
IN
Input Capacitance V
I
0V or V
CC
, V
CC
1.8V, 2.5V or 3.3V 6 pF
C
I/O
Input/Output Capacitance V
I
0V or V
CC
, V
CC
1.8V, 2.5V or 3.3V 7 pF
C
PD
Power Dissipation Capacitance V
I
0V or V
CC
, f 10 MHz, V
CC
1.8V, 2.5V or 3.3V 20 pF
