MC74LCX240
2.7V
0V
1.5V
1.5V
1Dn, 2Dn
1On, 2On
t
t
PLH
PHL
V
OH
OL
1.5V
1.5V
V
WAVEFORM 1 – PROPAGATION DELAYS
= t = 2.5ns, 10% to 90%; f = 1MHz; t = 500ns
t
R
F
W
2.7V
0V
1.5V
1OE, 2OE
1On, 2On
t
t
PHZ
PZH
V
V
CC
OH
– 0.3V
1.5V
1.5V
≈
0V
t
t
PLZ
PZL
≈
3.0V
1On, 2On
V
GND
+ 0.3V
OL
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
t
= t = 2.5ns, 10% to 90%; f = 1MHz; t = 500ns
R
F
W
Figure 1. AC Waveforms
V
CC
6V
OPEN
GND
R
1
PULSE
GENERATOR
DUT
R
C
R
L
T
L
TEST
SWITCH
Open
6V
t , t
PLH PHL
t , t
PZL PLZ
Open Collector/Drain t
PLH
and t
PHL
6V
t
, t
GND
PZH PHZ
C
R
R
= 50pF or equivalent (Includes jig and probe capacitance)
L
L
T
= R = 500Ω or equivalent
1
OUT
= Z
of pulse generator (typically 50Ω)
Figure 2. Test Circuit
LCX DATA
5
MOTOROLA
BR1339 — REV 3
MOTOROLA [ MOTOROLA ]
