Data Sheet

www.fairchildsemi.com 4
74LCX112
AC Electrical Characteristics
Note 4: 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
).
Dynamic Switching Characteristics
Capacitance
Symbol Parameters
T
A
= 40°C to 85°C, R
L
= 500Ω
Units
V
CC
= 3.3V ± 0.3V V
CC
= 2.7V V
CC =
2.5V ± 0.2V
C
L
=50 pF C
L
= 50 pF C
L
=30 pF
Min Max Min Max Min Max
f
MAX
Maximum Clock Frequency 150 150 150 MHz
t
PHL
Propagation Delay 1.5 7.5 1.5 8.0 1.5 9.0
ns
t
PLH
CP
n
to Q
n
or Q
n
1.57.51.58.01.59.0
t
PHL
Propagation Delay 1.5 7.0 1.5 8.0 1.5 8.4
ns
t
PLH
C
Dn
or S
Dn
to Q
n
or Q
n
1.57.01.78.01.58.4
t
S
Setup Time 2.5 2.5 4.0 ns
t
H
Hold Time 1.5 1.5 2.0 ns
t
W
Pulse Width CP 3.3 3.3 4.0 ns
t
W
Pulse Width (C
D
, S
D
) 3.3 3.3 4.0 ns
t
REC
Recovery Time 2.0 2.5 4.5 ns
t
OSHL
Output to Output Skew 1.0
ns
t
OSLH
(Note 4) 1.0
Symbol Parameter Conditions
V
CC
T
A
= 25°C
Units
(V) Typical
V
OLP
Quiet Output Dynamic Peak V
OL
C
L
= 50 pF, V
IH
= 3.3V, V
IL
= 0V 3.3 0.8
V
C
L
= 30 pF, V
IH
= 2.5V, V
IL
= 0V 2.5 0.6
V
OLV
Quiet Output Dynamic Valley V
OL
C
L
= 50 pF, V
IH
= 3.3V, V
IL
= 0V 3.3 −0.8
V
C
L
= 30 pF, V
IH
= 2.5V, V
IL
= 0V 2.5 −0.6
Symbol Parameter Conditions Typical Units
C
IN
Input Capacitance V
CC
= Open, V
I
= 0V or V
CC
7pF
C
OUT
Output Capacitance V
CC
= 3.3V, V
I
= 0V or V
CC
8pF
C
PD
Power Dissipation Capacitance V
CC
= 3.3V, V
I
= 0V or V
CC
, f = 10 MHz 25 pF