74LVC157A_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 2 — 2 May 2013 7 of 17
NXP Semiconductors
74LVC157A-Q100
Quad 2-input multiplexer
10. Dynamic characteristics
[1] Typical values are measured at T
amb
=25C and V
CC
= 1.2 V, 1.8 V, 2.5 V, 2.7 V, and 3.3 V respectively.
[2] t
pd
is the same as t
PLH
and t
PHL
.
[3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
[4] C
PD
is used to determine the dynamic power dissipation (P
D
in W).
P
D
=C
PD
V
CC
2
f
i
N+(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz; f
o
= output frequency in MHz
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
N = number of inputs switching
(C
L
V
CC
2
f
o
) = sum of outputs
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 9.
Symbol Parameter Conditions 40 C to +85 C 40 C to +125 C Unit
Min Typ
[1]
Max Min Max
t
pd
propagation delay nI0, nI1 to nY; see Figure 8
[2]
V
CC
= 1.2 V - 16 - - - ns
V
CC
= 1.65 V to 1.95 V 1.0 4.8 10.2 1.0 11.8 ns
V
CC
= 2.3 V to 2.7 V 1.5 2.8 5.8 1.5 6.7 ns
V
CC
= 2.7 V 1.0 2.9 5.9 1.0 7.5 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.5 5.2 1.0 6.5 ns
E
to nY; see Figure 7
[2]
V
CC
= 1.2 V - 17 - - - ns
V
CC
= 1.65 V to 1.95 V 0.5 4.8 12.8 0.5 14.7 ns
V
CC
= 2.3 V to 2.7 V 1.5 2.8 7.2 1.5 8.3 ns
V
CC
= 2.7 V 1.0 2.9 7.8 1.0 10.0 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.6 6.5 1.0 8.5 ns
S to nY; see Figure 8
[2]
V
CC
= 1.2 V - 16 - - - ns
V
CC
= 1.65 V to 1.95 V 1.0 5.1 12.4 1.0 14.3 ns
V
CC
= 2.3 V to 2.7 V 1.5 3.0 7.0 1.5 8.1 ns
V
CC
= 2.7 V 1.0 3.1 7.3 1.0 9.5 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.7 6.3 1.0 8.0 ns
t
sk(o)
output skew time V
CC
= 3.0 V to 3.6 V
[3]
- - 1.0 - 1.5 ns
C
PD
power dissipation
capacitance
per input; V
I
= GND to V
CC
[4]
V
CC
= 1.65 V to 1.95 V - 9.4 - - - pF
V
CC
= 2.3 V to 2.7 V - 12.8 - - - pF
V
CC
= 3.0 V to 3.6 V - 15.9 - - - pF
