74ABT574A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2 — 23 November 2012 8 of 16
NXP Semiconductors
74ABT574A
Octal D-type flip-flop; 3-state
V
M
= 1.5 V
V
OL
and V
OH
are typical voltage output levels that occur with the output load
Fig 8. 3-state output (Qn) enable and disable times
001aac448
t
PZL
Qn output
Qn output
OE input
V
OL
V
OH
V
I
V
M
GND
3.5 V
GND
t
PLZ
t
PZH
t
PHZ
V
OL
+
0.3 V
V
OH
− 0.3 V
V
M
V
M
a. Input pulse definition b. Test circuit
Test data is given in Table 8.
R
L
= Load resistance.
C
L
= Load capacitance including jig and probe capacitance.
R
T
= Termination resistance should be equal to output impedance Z
o
of the pulse generator.
V
EXT
= External voltage for measuring switching times.
Fig 9. Test circuit for measuring switching times
001aai298
V
M
V
M
t
W
t
W
10 %
90 % 90 %
0 V
V
I
V
I
negative
pulse
positive
pulse
0 V
V
M
V
M
90 %
10 %
90 %
10 % 10 %
t
f
t
r
t
r
t
f
V
EXT
V
CC
V
I
V
O
mna616
DUT
C
L
R
T
R
L
R
L
G
Table 8. Test data
Input Load V
EXT
V
I
f
i
t
W
t
r
, t
f
C
L
R
L
t
PHL
, t
PLH
t
PZH
, t
PHZ
t
PZL
, t
PLZ
3.0 V 1 MHz 500 ns 2.5 ns 50 pF 500 open open 7.0 V
