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| MC74LVX4245 Datasheet, PDF (8/10 Pages) Motorola, Inc – LOW-VOLTAGE CMOS | |||
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MC74LVX4245
An, Bn
50% VCC
tPLH
Bn, An
50% VCC
VCC
50% VCC
0V
tPHL
VOH
50% VCC
VOL
WAVEFORM 1 â PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
OE, T/R
An, Bn
An, Bn
50% VCC
50% VCC
tPZH
tPHZ
50% VCC
tPZL
tPLZ
50% VCC
WAVEFORM 2 â OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
Figure 6. AC Waveforms
VCCA
0V
VCC
VOH â 0.3V
â 0V
â VCC
VOL + 0.3V
GND
PULSE
GENERATOR
VCC
DUT
RT
R1
CL
RL
2 Ã VCC
OPEN
TEST
SWITCH
tPLH, tPHL, tPZH, tPHZ
Open
tPZL, tPLZ
2 Ã VCC
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500W or equivalent
RT = ZOUT of pulse generator (typically 50W)
Figure 7. Test Circuit
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