MC74VHCT373A データシートの表示（PDF） - ON Semiconductor
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MC74VHCT373A Datasheet PDF : 8 Pages
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MC74VHCT373A
D
tPLH
Q
1.5V
1.5V
3V
GND
tPHL
VOH
VOL
Figure 3. Switching Waveform
OE
1.5V
tPZL
tPLZ
Q
1.5V
tPZH
tPHZ
Q
1.5V
3V
GND
HIGH
IMPEDANCE
VOL +0.3V
VOH -0.3V
HIGH
IMPEDANCE
Figure 5. Switching Waveform
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
*Includes all probe and jig capacitance
Figure 7. Test Circuit
tw
3V
LE
1.5V
GND
tPLH
tPHL
VOH
Q
1.5V
VOL
Figure 4. Switching Waveform
VALID
3V
D
1.5V
GND
tsu
th
3V
LE
1.5V
GND
Figure 6. Switching Waveform
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 kΩ
CL*
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
*Includes all probe and jig capacitance
Figure 8. Test Circuit
D0
3
DQ
D1
4
DQ
D2
7
DQ
D3
8
DQ
D4
13
DQ
D5
14
DQ
D6
17
DQ
D7
18
DQ
11
LE
1
OE
LE
LE
LE
LE
LE
LE
LE
LE
2
5
6
9
12
15
16
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Figure 9. Expanded Logic Diagram
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