Datasheet

74AHC_AHCT245_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 28 April 2009 9 of 16
NXP Semiconductors
74AHC245; 74AHCT245
Octal bus transceiver; 3-state
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 6. Enable and disable times
mna367
t
PLZ
t
PHZ
outputs
disabled
outputs
enabled
V
Y
V
X
outputs
enabled
output
LOW-to-OFF
OFF-to-LOW
output
HIGH-to-OFF
OFF-to-HIGH
OE input
V
I
V
OL
V
OH
V
CC
V
M
GND
GND
t
PZL
t
PZH
V
M
V
M
Table 8. Measurement points
Type Input Output
V
M
V
M
V
X
V
Y
74AHC245 0.5 × V
CC
0.5 × V
CC
V
OL
+ 0.3 V V
OH
− 0.3 V
74AHCT245 1.5 V 0.5 × V
CC
V
OL
+ 0.3 V V
OH
− 0.3 V