MC74ACT273DT 查看數據表（PDF） - ON Semiconductor
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MC74ACT273DT Datasheet PDF : 12 Pages
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MC74AC273, MC74ACT273
D0 D1 D2 D3 D4 D5 D6 D7
CP
MR
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Figure 2. Logic Symbol
D0
D1
D2
CP
MODE SELECT-FUNCTION TABLE
Operating Mode
Inputs
MR CP Dn
Reset (Clear)
L
XX
Load ′1′
H
H
Load ′0′
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW-to-HIGH Clock Transition
Outputs
Qn
L
H
L
D3
D4
D5
D6
D7
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
MR
O0
O1
O2
O3
O4
O5
O6
O7
NOTE: That this diagram is provided only for the understanding of logic operations
and should not be used to estimate propagation delays.
Figure 3. Logic Diagram
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
VIN
VOUT
IIN
IOUT
ICC
Tstg
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC VCC or GND Current per Output Pin
Storage Temperature
–0.5 to +7.0
V
–0.5 to VCC +0.5
V
–0.5 to VCC +0.5
V
±20
mA
±50
mA
±50
mA
–65 to +150
°C
*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the
Recommended Operating Conditions.
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