74LVC257A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 6 — 28 November 2011 7 of 18
NXP Semiconductors
74LVC257A
Quad 2-input multiplexer with 5V tolerant; 3-state
10. Dynamic characteristics
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 7
[2]
V
CC
= 1.2 V - 16 - - - ns
V
CC
= 1.65 V to 1.95 V 1.5 5.2 10.6 1.5 12.3 ns
V
CC
= 2.3 V to 2.7 V 1.0 2.8 5.5 1.0 6.4 ns
V
CC
= 2.7 V 1.0 2.8 5.4 1.0 7.0 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.4 4.6 1.0 6.0 ns
S to nY; see Figure 7
[2]
V
CC
= 1.2 V - 18 - - - ns
V
CC
= 1.65 V to 1.95 V 1.0 6.0 14.8 1.0 17.1 ns
V
CC
= 2.3 V to 2.7 V 1.0 3.2 7.7 1.0 8.9 ns
V
CC
= 2.7 V 1.0 3.2 7.5 1.0 9.5 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.7 6.4 1.0 8.0 ns
t
en
enable time OE to nY; see Figure 8
[2]
V
CC
= 1.2 V - 15 - - - ns
V
CC
= 1.65 V to 1.95 V 1.5 5.8 12.7 1.5 14.7 ns
V
CC
= 2.3 V to 2.7 V 1.5 3.3 7.0 1.5 8.1 ns
V
CC
= 2.7 V 1.5 3.4 6.7 1.5 8.5 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.7 5.6 1.0 7.0 ns
t
dis
disable time OE to nY; see Figure 8
[2]
V
CC
= 1.2 V - 8 - - - ns
V
CC
= 1.65 V to 1.95 V 2.2 4.0 8.2 2.2 9.4 ns
V
CC
= 2.3 V to 2.7 V 0.5 2.2 4.4 0.5 5.1 ns
V
CC
= 2.7 V 1.5 3.0 4.7 1.5 6.0 ns
V
CC
= 3.0 V to 3.6 V 1.0 2.8 4.3 1.0 5.5 ns
t
sk(o)
output skew time V
CC
= 3.0 V to 3.6 V
[3]
- - 1.0 - 1.5 ns