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MC74VHC595 Просмотр технического описания (PDF) - ON Semiconductor
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MC74VHC595
8-Bit Shift Register with Output Storage Register (3-State)
ON Semiconductor
MC74VHC595 Datasheet PDF : 11 Pages
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SCK
50%
t
w
1/f
max
t
PLH
t
PHL
SQH
50% V
CC
Figure 2.
MC74VHC595
SWITCHING WAVEFORMS
t
w
V
CC
SCLR
50%
V
CC
GND
GND
t
PHL
SQH
50% V
CC
t
rec
V
CC
SCK
50%
GND
Figure 3.
RCK
50%
QA-QH
t
PLH
t
PHL
50% V
CC
Figure 4.
SCLR
SI
SCK or RCK
50%
VALID
50%
t
su
t
h
50%
Figure 6.
V
CC
GND
V
CC
GND
V
CC
GND
V
CC
GND
OE
QA-QH
QA-QH
50%
t
PZL
t
PLZ
50% V
CC
t
PZH
t
PHZ
50% V
CC
Figure 5.
V
CC
GND
HIGH
IMPEDANCE
V
OL
+0.3V
V
OH
-0.3V
HIGH
IMPEDANCE
V
CC
SCK
50%
GND
t
su(H)
V
CC
RCK
50%
GND
t
w
Figure 7.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C
L
*
TEST CIRCUITS
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 k
Ω
C
L
*
CONNECT TO V
CC
WHEN
TESTING t
PLZ
AND t
PZL
.
CONNECT TO GND WHEN
TESTING t
PHZ
AND t
PZH
.
*Includes all probe and jig capacitance
Figure 8.
*Includes all probe and jig capacitance
Figure 9.
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