www.fairchildsemi.com 4
74LVQ174
AC Electrical Characteristics
Note 9: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (t
OSHL
) or LOW-to-HIGH (t
OSLH
). Parameter guaranteed by design.
AC Operating Requirements
Capacitance
Note 10: C
PD
is measured at 10 MHz.
Symbol Parameter
T
A
= +25°CT
A
= −40°C to +85°C
UnitsV
CC
C
L
= 50 pF C
L
= 50 pF
(V) MinTypMaxMinMax
f
MAX
Maximum Clock 2.7 60 90 50
MHz
Frequency 3.3 ± 0.3 90 100 70
t
PLH
Propagation Delay 2.7 2.0 10.8 16.2 1.5 18.0
ns
CP to Q
n
3.3 ± 0.3 2.0 9.0 11.5 1.5 12.5
t
PHL
Propagation Delay 2.7 2.0 10.2 15.5 1.5 17.0
ns
CP to Q
n
3.3 ± 0.3 2.0 8.5 11.0 1.5 12.0
t
PHL
Propagation Delay 2.7 2.5 10.8 16.2 2.0 18.0
ns
MR
to Q
n
3.3 ± 0.3 2.5 9.0 11.5 2.0 12.5
t
OSHL
, Output to 2.7 1.0 1.5 1.5
ns
t
OSLH
Output Skew (Note 9) 3.3 ± 0.3 1.0 1.5 1.5
Symbol Parameter
T
A
= +25°CT
A
= −40°C to +85°C
UnitsV
CC
C
L
= 50 pF C
L
= 50 pF
(V) Typ Guaranteed Minimum
t
S
Setup Time, HIGH or LOW 2.7 3.0 8.0 10.0
ns
D
n
to CP 3.3 ± 0.3 2.5 6.5 7.0
t
H
Hold Time, HIGH or LOW 2.7 1.2 4.0 4.5
ns
D
n
to CP 3.3 ± 0.3 1.0 3.0 3.0
t
W
MR Pulse Width, LOW 2.7 1.2 7.0 10.0
ns
3.3 ± 0.3 1.0 5.5 7.0
t
W
CP Pulse Width 2.7 1.2 7.0 10.0
ns
3.3 ± 0.3 1.0 5.5 7.0
t
REC
Recovery Time 2.7 0 3.5 3.5
ns
MR
to CP 3.3 ± 0.3 0 2.5 2.5
Symbol Parameter Typ Units Conditions
C
IN
Input Capacitance 4.5 pF V
CC
= Open
C
PD
(Note 10) Power Dissipation Capacitance 23 pF V
CC
= 3.3V
