MC74LCX543DW Ver la hoja de datos (PDF) - Motorola => Freescale
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MC74LCX543DW Datasheet PDF : 9 Pages
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MC74LCX543
tw
NEGATIVE
1.5V
1.5V
PULSE
POSITIVE
1.5V
1.5V
PULSE
tw
WAVEFORM 3 – INPUT PULSE DEFINITION
tR = tF = 2.5ns, 10% to 90% of 0V to 2.7V
An
or Bn
Exx 1.5V
or LExx
An
or Bn
ts
tw
tPLH, tPHL
1.5V
2.7V
1.5V
0V
th
2.7V
1.5V
0V
VOH
VOL
WAVEFORM 4 – Enable to A or B PROPAGATION DELAYS, Enable MINIMUM
PULSE WIDTH, A or B to Enable SETUP AND HOLD TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns except when noted
Figure 2. AC Waveforms (continued)
PULSE
GENERATOR
VCC
DUT
RT
R1
CL
RL
6V
OPEN
GND
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 3. Test Circuit
MOTOROLA
6
LCX DATA
BR1339 — REV 3
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