www.fairchildsemi.com 4
74LCX841
DC Electrical Characteristics (Continued)
Note 5: Outputs disabled or 3-STATE only.
AC Electrical Characteristics
Note 6: 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 Parameter Conditions
V
CC
T
A
= −40°C to +85°C
Units
(V) Min Max
I
CC
Quiescent Supply Current V
I
= V
CC
or GND 2.3 − 3.6 10
µA
3.6V ≤ V
I
, V
O
≤ 5.5V (Note 5) 2.3 − 3.6 ±10
∆I
CC
Increase in I
CC
per Input V
IH
= V
CC
− 0.6V 2.3 − 3.6 500 µA
Symbol Parameter
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
t
PHL
Propagation Delay 1.5 7.0 1.5 7.5 1.5 8.4
ns
t
PLH
D
n
to O
n
1.5 7.0 1.5 7.5 1.5 8.4
t
PHL
Propagation Delay 1.5 7.0 1.5 7.5 1.5 8.4
ns
t
PLH
LE to O
n
1.5 7.0 1.5 7.5 1.5 8.4
t
PZL
Output Enable Time 1.5 8.0 1.5 8.5 1.5 9.6
ns
t
PZH
1.5 8.0 1.5 8.5 1.5 9.6
t
PLZ
Output Disable Time 1.5 6.5 1.5 7.0 1.5 7.8
ns
t
PHZ
1.5 6.5 1.5 7.0 1.5 7.8
t
OSHL
Output to Output Skew 1.0
ns
t
OSLH
(Note 6) 1.0
t
S
Setup Time D
n
to LE 2.5 2.5 4.0 ns
t
H
Hold Time D
n
to LE 1.5 1.5 2.0 ns
t
W
LE Pulse Width 3.3 3.3 4.0 ns
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
O
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 20 pF
