鈥?/div>
78
58
47
ns
ns
ns
UNIT
AC WAVEFORMS
V
M
= 1.5V at V
CC
w
2.7V
V
M
= 0.5V * V
CC
at V
CC
t
2.7V
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
V
X
= V
OL
+ 0.3V at V
CC
w
2.7V
V
X
= V
OL
+ 0.1V
CC
at V
CC
<
2.7V
V
Y
= V
OH
鈥?0.3V at V
CC
w
2.7V
V
Y
= V
OH
鈥?0.1V
CC
at V
CC
<
2.7V
V
CC
nA INPUT
GND
t
PHL
V
OH
nY OUTPUT
V
OL
V
M
t
PLH
V
CC
OUTPUT
HIGH鈥搕o鈥揙FF
OFF鈥搕o鈥揌IGH
GND
outputs
enabled
V
Y
V
M
V
M
V
CC
OEn INPUT
GND
t
PLZ
V
CC
OUTPUT
LOW鈥搕o鈥揙FF
OFF鈥搕o鈥揕OW
V
OL
t
PHZ
V
M
V
X
t
PZH
t
PZL
V
M
outputs
disabled
outputs
enabled
SV00648
Figure 1. Input (nA) to output (nY) propagation delays.
Figure 2. 3-State enable and disable times.
SV00649
1998 May 29
6