MC74VHC595 查看數據表（PDF） - ON Semiconductor
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MC74VHC595 Datasheet PDF : 12 Pages
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MC74VHC595
SWITCHING WAVEFORMS
VCC
SCK
50%
GND
tw
1/fmax
tPLH
tPHL
SQH
50% VCC
Figure 2.
RCK
50%
QA--QH
tPLH tPHL
50% VCC
Figure 4.
SCLR
SI
SCK or RCK
50%
VALID
50%
tsu
th
50%
Figure 6.
VCC
GND
VCC
GND
VCC
GND
VCC
GND
tw
VCC
SCLR
50%
GND
tPHL
SQH
50% VCC
trec
VCC
SCK
50%
GND
Figure 3.
OE
QA--QH
QA--QH
50%
tPZL
tPLZ
50% VCC
tPZH
tPHZ
50% VCC
Figure 5.
VCC
GND
HIGH
IMPEDANCE
VOL +0.3V
VOH --0.3V
HIGH
IMPEDANCE
VCC
SCK
50%
GND
tsu(H)
VCC
RCK
50%
GND
tw
Figure 7.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
TEST CIRCUITS
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.
*Includes all probe and jig capacitance
Figure 9.
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