Datasheet
5
Enable to Output t
PLH,
t
PHL
C
L
= 50pF 2 - - 135 - 170 - 205 ns
4.5 - - 27 - 34 - 41 ns
HC157 C
L
=15pF 5 - 11 - - - - - ns
HCT157 - 12 - - - - - ns
C
L
= 50pF 6 - - 23 - 29 - 35 ns
Select to Output t
PLH,
t
PHL
C
L
= 50pF 2 - - 145 - 180 - 220 ns
4.5 - - 29 - 36 - 44 ns
HC157 C
L
=15pF 5 - 12 - - - - - ns
HCT157 - 15 - - - - - ns
C
L
= 50pF 6 - - 25 - 31 - 38 ns
Power Dissipation
Capacitance (Notes 3, 4)
C
PD
-5
HC157 - 62 - - - - - pF
HCT157 - 70 - - - - - pF
HC/HCT158 TYPES
Data to Output t
PLH,
t
PHL
C
L
= 50pF 2 - - 140 - 175 - 210 ns
4.5 - - 28 - 35 - 42
HC158 C
L
=15pF 5 - 11 - - - - - ns
HCT 158 - 13 - - - - - ns
C
L
= 50pF 6 - - 24 - 30 - 36 ns
Enable to Output t
PLH,
t
PHL
C
L
= 50pF 2 - - 160 - 200 - 240 ns
4.5 - - 32 - 40 - 48 ns
HC158 C
L
=15pF 5 - 13 - - - - - ns
HCT 158 - 15 - - - - - ns
C
L
= 50pF 6 - - 27 - 34 - 41 ns
Select to Output t
PLH,
t
PHL
C
L
= 50pF 2 - - 150 - 190 - 225 ns
4.5 - - 30 - 38 - 45 ns
HC158 C
L
=15pF 5 - 12 - - - - - ns
HCT 158 - 14 - - - - - ns
C
L
= 50pF 6 - - 26 - 33 - 38 ns
Output Transition Time t
TLH,
t
THL
C
L
= 50pF 2 - - 75 - 95 - 110 ns
4.5 - - 15 - 19 - 22 ns
6 - - 13 - 16 - 19 ns
Power Dissipation
Capacitance (Notes 3, 4)
C
PD
-5
HC158 - 35 - - - - - pF
HCT 158 - 35 - - - - - pF
Input Capacitance C
IN
C
L
= 50pF - - - 10 - 10 - 10 pF
NOTES:
3. C
PD
is used to determine the dynamic power consumption, per multiplexer.
4. P
D
= V
CC
2
f
i
(C
PD
+ C
L
) where f
i
= input frequency, C
L
= output load capacitance, V
CC
= supply voltage.
Switching Speciļ¬cations Input t
r
, t
f
= 6ns (Continued)
PARAMETER SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C -40
o
C TO 85
o
C -55
o
C TO 125
o
C
UNITSMIN TYP MAX MIN MAX MIN MAX
CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158