Datasheet

74AHC_AHCT573 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 7 — 8 November 2011 11 of 19
NXP Semiconductors
74AHC573; 74AHCT573
Octal D-type transparant latch; 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 9. Enable and disable times
mna813
t
PLZ
t
PHZ
outputs
disabled
outputs
enabled
V
Y
V
X
outputs
enabled
Qn output
LOW-to-OFF
OFF-to-LOW
Qn output
HIGH-to-OFF
OFF-to-HIGH
OE input
V
OL
V
OH
V
CC
V
I
V
M
GND
GND
t
PZL
t
PZH
V
M
V
M
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
The shaded areas indicate when the input is permitted to change for predicable output performance.
Fig 10. Data set-up and hold times
mna814
t
h
t
su
t
h
t
su
V
M
V
M
V
I
GND
V
I
GND
LE input
Dn input
Table 8. Measurement points
Type Input Output
V
M
V
M
V
X
V
Y
74AHC573 0.5  V
CC
0.5  V
CC
V
OL
+ 0.3 V V
OH
 0.3 V
74AHCT573 1.5 V 0.5  V
CC
V
OL
+ 0.3 V V
OH
 0.3 V