74LVX257
4/13
Table 7: Dynamic Switching Characteristics
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (V
ILD
), 0V to threshold
(V
IHD
), f=1MHz.
Table 8: AC Electrical Characteristics (Input t
r
= t
f
= 3ns)
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW
2) Parameter guaranteed by design
(*) Voltage range is 3.3V ±
0.3V
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
OLP
Dynamic Low
Voltage Quiet
Output (note 1, 2)
3.3
C
L
= 50 pF
0.3 0.5
V
V
OLV
-0.5 -0.3
V
IHD
Dynamic High
Voltage Input
(note 1, 3)
3.3 2.0
V
ILD
Dynamic Low
Voltage Input
(note 1, 3)
3.3 0.8
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, to Y
2.7 15 7.0 13.0 1.0 15.4 1.0 16.4
ns
2.7 50 9.5 18.0 1.0 20.3 1.0 21.3
3.3
(*)
15 5.8 9.3 1.0 11.0 1.0 12.0
3.3
(*)
50 8.3 12.8 1.0 14.5 1.0 15.5
t
PLH
t
PHL
Propagation Delay
Time
SELECT to Y
2.7 15 8.5 15.4 1.0 18.2 1.0 20.0
ns
2.7 50 10.5 20.3 1.0 23.1 1.0 24.5
3.3
(*)
15 7.0 11.0 1.0 13.0 1.0 14.0
3.3
(*)
50 9.5 14.5 1.0 16.5 1.0 18.0
t
PZL
t
PZH
Output Enable
Time
2.7 15 8.0 14.7 1.0 17.5 1.0 18.5
ns
2.7 50 10.5 19.6 1.0 22.4 1.0 24.0
3.3
(*)
15 6.7 10.5 1.0 12.5 1.0 13.5
3.3
(*)
50 9.2 14.0 1.0 16.0 1.0 17.0
t
PLZ
t
PHZ
Output Disable
Time
2.7 50 9.5 16.8 1.0 18.9 1.0 20.0
ns
3.3
(*)
50 8.6 12.0 1.0 13.5 1.0 15.0
t
OSLH
t
OSHL
Output to Output
Skew Time (note
1,2)
2.7 50 0.5 1.0 1.5 1.5
ns
3.3
(*)
50 0.5 1.0 1.5 1.5
Obsolete Product(s) - Obsolete Product(s)
