HD74LVC74
Waveforms
t
f
Input CLR
90 %
V
ref
10 %
t
w
t
f
90 %
Input PR
t
rec
t
r
Input CK
90 %
V
ref
10 %
t
f
90 %
V
ref
10 %
t
w
(H)
V
ref
t
w
(L)
V
ref
V
ref
V
ref
t
r
90 %
V
ref
10 % 10 %
t
w
t
rec
V
IH
V
ref
GND
t
h
(H)
t
s
(L)
t
h
(L)
V
IH
V
ref
V
ref
GND
t
PHL
V
ref
t
PLH
V
OH
Output Q
V
ref
V
ref
V
ref
V
OL
t
PLH
Output Q
V
ref
t
PHL
V
ref
t
PLH
V
ref
t
PHL
V
OH
V
ref
V
OL
Symbol
V
IH
V
ref
V
CC
= 2.7 V,
3.3±0.3 V
V
CC
= 5.0±0.5 V
2.7 V
V
CC
1.5 V
50%V
CC
V
IH
GND
t
r
90 %
V
ref
10 %
V
IH
GND
t
s
(H)
Input D
90 %
V
ref
10 %
t
r
t
PHL
90 %
V
ref
10 %
t
f
t
PLH
Notes:
1. tr = 2.5 ns, tf = 2.5 ns
2. Clock pulse input waveform : PRR = 10 MHz, duty cycle 50%
3. Data input waveform : PRR = 5 MHz, duty cycle 50%
Rev.4.00 Jul. 22, 2004 page 5 of 6