MC74LCX646 データシートの表示（PDF） - ON Semiconductor
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MC74LCX646 Datasheet PDF : 10 Pages
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MC74LCX646
An, Bn
ts
CAB,
1.5 V
CBA
Bn, An
1.5 V
th
tw
1.5 V
fmax
tPLH, tPHL
1.5 V
2.7 V
0V
2.7 V
0V
VOH
VOL
WAVEFORM 3 − CLOCK to Bn/An PROPAGATION DELAYS, CLOCK MINIMUM PULSE WIDTH,
An/Bn to CLOCK SETUP AND HOLD TIMES
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns except when noted
tw
NEGATIVE
1.5 V
1.5 V
PULSE
POSITIVE
1.5 V
1.5 V
PULSE
tw
WAVEFORM 4 − INPUT PULSE DEFINITION
tR = tF = 2.5 ns, 10% to 90% of 0 V to 2.7 V
Figure 4. AC Waveforms
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 = 50 pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500 Ω or equivalent
RT = ZOUT of pulse generator (typically 50 Ω)
Figure 5. Test Circuit
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