Datasheet

74HC_HCT157 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 21 January 2015 7 of 19
NXP Semiconductors
74HC157; 74HCT157
Quad 2-input multiplexer
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); C
L
= 50 pF unless otherwise specified; for test circuit see Figure 9.
Symbol Parameter Conditions T
amb
= 25 C T
amb
= 40 C
to +85 C
T
amb
= 40 C
to +125 C
Unit
Min Typ Max Min Max Min Max
74HC157
t
pd
propagation
delay
nI0, nI1 to nY; see Figure 7
[1]
V
CC
= 2.0 V - 36 125 - 155 - 190 ns
V
CC
= 4.5 V - 13 25 - 31 - 38 ns
V
CC
=5V; C
L
=15pF - 11 - - - - - ns
V
CC
= 6.0 V - 10 21 - 26 - 32 ns
S to nY; see Figure 7
[1]
V
CC
= 2.0 V - 41 125 - 155 - 190 ns
V
CC
= 4.5 V - 15 25 - 31 - 38 ns
V
CC
=5V; C
L
=15pF - 12 - - - - - ns
V
CC
= 6.0 V - 12 21 - 26 - 32 ns
E
to nY; see Figure 8
[1]
V
CC
= 2.0 V - 39 115 - 145 - 175 ns
V
CC
= 4.5 V - 14 23 - 29 - 35 ns
V
CC
=5V; C
L
=15pF - 11 - - - - - ns
V
CC
= 6.0 V - 11 20 - 25 - 30 ns
t
t
transition
time
nY; see Figure 7
[2]
V
CC
= 2.0 V - 19 75 - 95 - 110 ns
V
CC
= 4.5 V - 7 15 - 19 - 22 ns
V
CC
= 6.0 V - 6 13 - 16 - 19 ns
C
PD
power
dissipation
capacitance
C
L
=50pF;f=1 MHz;
V
I
=GNDtoV
CC
[3]
-70- - - - -pF
74HCT157
t
pd
propagation
delay
nI0, nI1 to nY; see Figure 7
[1]
V
CC
= 4.5 V - 16 27 - 34 - 41 ns
V
CC
=5V; C
L
=15pF - 13 - - - - - ns
S to nY; see Figure 7
[1]
V
CC
= 4.5 V - 22 37 - 46 - 56 ns
V
CC
=5V; C
L
=15pF - 19 - - - - - ns
E
to nY; see Figure 8
[1]
V
CC
= 4.5 V - 15 26 - 33 - 39 ns
V
CC
=5V; C
L
=15pF - 12 - - - - - ns