Data Sheet

©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com
74LCX244 — Low Voltage Buffer/Line Driver with 5V Tolerant Inputs and Outputs
DC Electrical Characteristics
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
).
Symbol Parameter V
CC
(V) Conditions
T
A
= –40°C to +85°C
UnitsMin. Max.
V
IH
HIGH Level Input Voltage 2.3–2.7 1.7 V
2.7–3.6 2.0
V
IL
LOW Level Input Voltage 2.3–2.7 0.7 V
2.7–3.6 0.8
V
OH
HIGH Level Output Voltage 2.3–3.6 I
OH
= –100µA V
CC
– 0.2 V
2.3 I
OH
= –8mA 1.8
2.7 I
OH
= –12mA 2.2
3.0 I
OH
= –18mA 2.4
I
OH
= –24mA 2.2
V
OL
LOW Level Output Voltage 2.3–3.6 I
OL
= 100µA 0.2 V
2.3 I
OL
= 8mA 0.6
2.7 I
OL
= 12mA 0.4
3.0 I
OL
= 16mA 0.4
I
OL
= 24mA 0.55
I
I
Input Leakage Current 2.3–3.6 0 ≤ V
I
≤ 5.5V ±5.0 µA
I
OZ
3-STATE Output Leakage 2.3–3.6 0 ≤ V
O
≤ 5.5V,
V
I
= V
IH
or V
IL
±5.0 µA
I
OFF
Power-Off Leakage Current 0 V
I
or V
O
= 5.5V 10 µA
I
CC
Quiescent Supply Current 2.3–3.6 V
I
= V
CC
or GND 10 µA
3.6V ≤ V
I
, V
O
≤ 5.5V
(5)
±10
ΔI
CC
Increase in I
CC
per Input 2.3–3.6 V
IH
= V
CC
– 0.6V 500 µA
Symbol Parameter
T
A
= –40°C to +85°C, R
L
= 500Ω
Units
V
CC
= 3.3V ± 0.3V,
C
L
= 50pF
V
CC
= 2.7V,
C
L
= 50pF
V
CC
= 2.5V ± 0.2V,
C
L
= 30pF
Min. Max. Min. Max. Min. Max.
t
PHL
, t
PLH
Propagation Delay,
Data to Output
1.5 6.5 1.5 7.5 1.5 7.8 ns
t
PZL
, t
PZH
Output Enable Time 1.5 8.0 1.5 9.0 1.5 10.0 ns
t
PLZ
, t
PHZ
Output Disable Time 1.5 7.0 1.5 8.0 1.5 8.4 ns
t
OSHL
, t
OSLH
Output to Output Skew
(6)
1.0 ns
74LCX244 Rev. 1.12.2 4