MC74LCX374DT データシートの表示（PDF） - ON Semiconductor
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MC74LCX374DT Datasheet PDF : 8 Pages
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MC74LCX374
Dn
ts
CP
On
th
1.5V
fmax
tPLH, tPHL
1.5V
2.7V
1.5V
0V
2.7V
0V
VOH
VOL
WAVEFORM 1 - PROPAGATION DELAYS, SETUP AND HOLD TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
OE
1.5V
1.5V
tPZH
On
tPHZ
1.5V
tPZL
On
tPLZ
1.5V
2.7V
0V
VCC
VOH - 0.3V
≈ 0V
≈ 3.0V
VOL + 0.3V
GND
WAVEFORM 2 - OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
CP
1.5V
tw
2.7V
1.5V
0V
tw
CP
1.5V
2.7V
1.5V
0V
WAVEFORM 3 - PULSE WIDTH
tR = tF = 2.5ns (or fast as required) from 10% to 90%;
Output requirements: VOL ≤ 0.8V, VOH ≥ 2.0V
Figure 3. 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 = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
Figure 4. Test Circuit
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