Philips Semiconductors
Product specification
Quad 2-input multiplexer
74LVC157A
AC WAVEFORMS
V
M
= 0.5
×
V
CC
at V
CC
<
2.7 V
V
M
= 1.5 V at V
CC
≥
2.7 V
V
X
= V
OL
+ 0.3 V at V
CC
≥
2.7 V
V
X
= V
OL
+ 0.1
×
V
CC
at V
CC
<
2.7 V
V
Y
= V
OH
– 0.3 V at V
CC
≥
2.7V
V
Y
= V
OH
– 0.1
×
V
CC
at V
CC
<
2.7 V
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
V
I
E INPUT
GND
t PHL
V OH
nY OUTPUTS
V OL
VM
t PLH
VM
TEST CIRCUIT
V
CC
S
1
2 * V
CC
Open
GND
500Ω
V
I
PULSE
GENERATOR
R
T
D.U.T.
V
O
50pF
C
L
500Ω
SWITCH POSITION
TEST
t
PLH/
t
PHL
S
1
Open
V
CC
< 2.7V
2.7–3.6V
V
I
V
CC
2.7V
SV00903
SV00561
Figure 3. Load circuitry for switching times.
Figure 1. Enable input (E) to output (nY) propagation delays.
V
I
nI
0
, nI
1
, S
INPUTS
GND
t PHL
V OH
nY OUTPUT
V OL
VM
t PLH
VM
SV00562
Figure 2. Data inputs (nI
0
, nI
1
) and common data select
input (S) to output (nY) propagation delays.
1998 Jul 29
6
PHILIPS [ NXP SEMICONDUCTORS ]
