MC74LCX125 Datasheet, PDF (4/7 Pages) Motorola, Inc – LOW-VOLTAGE CMOS QUAD BUFFER

MC74LCX125
Dn
1.5V
tPLH
On
2.7V
1.5V
0V
tPHL
VOH
1.5V
1.5V
VOL
WAVEFORM 1 – PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
OEn
On
On
PULSE
GENERATOR
2.7V
1.5V
tPZH
tPHZ
1.5V
0V
VCC
VOH – 0.3V
≈ 0V
tPZL
tPLZ
≈ 3.0V
1.5V
VOL + 0.3V
GND
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
Figure 1. AC Waveforms
VCC
DUT
RT
R1
CL
RL
6V
OPEN
GND
MOTOROLA
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
6V
Open Collector/Drain tPLH and tPHL
6V
tPZH, tPHZ
GND
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
Figure 2. Test Circuit
4
LCX DATA
BR1339 — REV 3