Data Sheet

©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com
74LCX244 — Low Voltage Buffer/Line Driver with 5V Tolerant Inputs and Outputs
AC Loading and Waveforms
(Generic for LCX Family)
Figure 1. AC Test Circuit (C
L
includes probe and jig capacitance)
Waveform for Inverting and Non-Inverting Functions
Propagation Delay. Pulse Width and t
rec
Waveforms
3-STATE Output Low Enable and
Disable Times for Logic
3-STATE Output High Enable and
Disable Times for Logic
Setup Time, Hold Time and Recovery Time for Logic
t
rise
and t
fall
Figure 2. Waveforms (Input Characteristics; f = 1MHz, t
r
= t
f
= 3ns)
Test Switch
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
6V at V
CC
= 3.3 ± 0.3V
V
CC
x 2 at V
CC
= 2.5 ± 0.2V
t
PZH
, t
PHZ
GND
Symbol
V
CC
3.3V ± 0.3V 2.7V 2.5V ± 0.2V
V
mi
1.5V 1.5V V
CC
/ 2
V
mo
1.5V 1.5V V
CC
/ 2
V
x
V
OL
+ 0.3V V
OL
+ 0.3V V
OL
+ 0.15V
V
y
V
OH
– 0.3V V
OH
– 0.3V V
OH
– 0.15V
74LCX244 Rev. 1.12.2 6