![](http://datasheet.mmic.net.cn/230000/74F158A_datasheet_15562924/74F158A_5.png)
Philips Semiconductors
Product specification
74F157A, 74F158A
Data selectors/multiplexers
1996 Mar 12
5
AC ELECTRICAL CHARACTERISTICS FOR 74F157A AND 74F158A
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
V
CC
= +5.0V
T
amb
= +25
°
C
L
= 50pF
R
L
= 500
V
CC
= +5.0V
±
10%
T
amb
= 0
°
C to +70
°
C
C
L
= 50pF
R
L
= 500
V
CC
= +5.0V
±
10%
T
amb
= –40
°
C to +85
°
C
C
L
= 50pF
R
L
= 500
UNIT
MIN
TYP
MAX
MIN
MAX
MIN
MAX
t
PLH
t
PHL
Propagation delay
I0n, I1n to Yn
Waveform 1
3.5
2.5
4.5
3.5
6.5
5.0
3.0
1.5
7.0
6.0
3.0
1.5
7.5
6.5
ns
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Propagation delay
E to Yn
74F157A
Waveform 3
6.0
4.0
7.5
5.0
9.0
6.5
5.5
4.0
10.5
7.0
5.5
4.0
11.0
7.5
ns
Propagation delay
S to Yn
Waveform 1
5.5
4.5
7.5
6.0
10.0
7.5
5.0
4.0
11.0
8.5
5.0
4.0
11.5
9.0
ns
Propagation delay
I0n, I1n to Yn
Waveform 2
3.0
1.5
4.0
2.5
6.0
4.0
2.5
1.0
7.0
4.5
—
—
ns
Propagation delay
E to Yn
74F158A
Waveform 4
4.5
5.0
5.5
6.0
7.0
7.5
4.0
5.0
7.5
8.0
—
—
ns
Propagation delay
S to Yn
Waveform 2
4.5
4.0
6.5
5.5
8.5
7.5
4.0
3.5
9.5
8.0
—
—
ns
AC WAVEFORMS
For all waveforms, V
M
= 1.5V
V
M
V
M
V
M
V
M
Yn
I0n, I1n, S
t
PHL
t
PLH
SF00221
Waveform 1.
Propagation Delay for Data and Select to Output
V
M
V
M
V
M
V
M
Yn
I0n, I1n, S
t
PLH
t
PHL
SF00222
Waveform 2.
Propagation Delay for Data and Select to Output
V
M
V
M
V
M
V
M
Yn
E
t
PLH
t
PHL
SF00223
Waveform 3.
Propagation Delay for Enable to Output
V
M
V
M
V
M
V
M
Yn
E
t
PHL
t
PLH
SF00224
Waveform 4.
Propagation Delay for Enable to Output