74ACQ244CW Просмотр технического описания (PDF) - Fairchild Semiconductor
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74ACQ244CW Datasheet PDF : 9 Pages
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AC Operating Requirements for AC
Symbol
Parameter
tS
Setup Time, HIGH or LOW
Dn to CP
tH
Hold Time, HIGH or LOW
Dn to CP
tS
Setup Time, HIGH or LOW
CE to CP
tH
Hold Time, HIGH or LOW
CE to CP
tW
CP Pulse Width
HIGH or LOW
Note 8: Voltage Range 3.3 is 3.0V ± 0.3V
Voltage Range 5.0 is 5.0V ± 0.5V
VCC
(V)
(Note 8)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
TA = +25°C
TA = −40°C to +85°C
CL = 50 pF
CL = 50 pF
Typ
Guaranteed Minimum
3.5
5.5
6.0
2.5
4.0
4.5
−2.0
0
0
−1.0
1.0
1.0
4.0
6.0
7.5
2.5
4.0
4.5
−3.5
0
0
−2.0
1.0
1.0
3.5
5.5
6.0
2.5
4.0
4.5
AC Electrical Characteristics for ACT
Symbol
Parameter
fMAX
Maximum Clock
Frequency
tPLH
Propagation Delay
CP to Qn
tPHL
Propagation Delay
CP to Qn
Note 9: Voltage Range 5.0 is 5.0V ± 0.5V
VCC
(V)
(Note 9)
5.0
TA = +25°C
CL = 50 pF
Min
Typ
Max
140
175
5.0
3.0
6.5
9.0
5.0
3.5
7.0
10.0
AC Operating Requirements for ACT
TA = −40°C to +85°C
CL = 50 pF
Min
Max
125
2.5
10.0
2.5
11.0
Symbol
Parameter
tS
Setup Time, HIGH or LOW
Dn to CP
tH
Hold Time, HIGH or LOW
Dn to CP
tS
Setup Time, HIGH or LOW
CE to CP
tH
Hold Time, HIGH or LOW
CE to CP
tW
CP Pulse Width
HIGH or LOW
Note 10: Voltage Range 5.0 is 5.0V ± 0.5V
Capacitance
VCC
(V)
(Note 10)
5.0
5.0
5.0
5.0
5.0
TA = +25°C
CL = 50 pF
Typ
TA = −40°C to +85°C
CL = 50 pF
Guaranteed Minimum
2.5
4.5
5.5
−1.0
1.0
1.0
2.5
4.5
5.5
−1.0
1.0
1.0
2.0
4.0
4.5
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
Units
Conditions
4.5
90.0
pF
VCC = OPEN
pF
VCC = 5.0V
Units
ns
ns
ns
ns
ns
Units
MHz
ns
ns
Units
ns
ns
ns
ns
ns
5
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