Datasheet

74AHC_AHCT157_2 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 02 — 9 November 2007 9 of 16
NXP Semiconductors
74AHC157; 74AHCT157
Quad 2-input multiplexer
11. Waveforms
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 7. Propagation delay input (nI0, nI1, S) to output (nYn)
mna486
t
PHL
t
PLH
V
M
V
M
nI0, nI1, S
input
nY output
GND
V
I
V
OH
V
OL
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 8. Propagation delay input (E) to output (nY)
mna485
t
PHL
t
PLH
V
M
V
M
E input
nY output
GND
V
CC
V
OH
V
OL
Table 8. Measurement points
Type Input Output
V
M
V
M
74AHC157 0.5V
CC
0.5V
CC
74AHCT157 1.5 V 0.5V
CC