74AC648CW データシートの表示（PDF） - Fairchild Semiconductor
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74AC648CW Datasheet PDF : 7 Pages
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AC Electrical Characteristics
VCC
Symbol
Parameter
(V)
(Note 6)
Min
tPLH
Propagation Delay
Clock to Bus
3.3
1.5
5.0
1.5
tPHL
Propagation Delay
Clock to Bus
3.3
1.5
5.0
1.5
tPLH
Propagation Delay
Bus to Bus
3.3
1.5
5.0
1.5
tPHL
Propagation Delay
Bus to Bus
3.3
1.5
5.0
1.5
tPLH
Propagation Delay
3.3
1.5
SBA or SAB to An or Bn
5.0
1.5
(with An or Bn HIGH or LOW)
tPHL
Propagation Delay
3.3
1.5
SBA or SAB to An or B n
5.0
1.5
(with An or Bn HIGH or LOW)
tPZH
Enable Time
3.3
1.5
G to An or Bn
5.0
1.5
tPZL
Enable Time
3.3
1.5
G to An or Bn
5.0
1.5
tPHZ
Disable Time
3.3
1.5
G to An or Bn
5.0
1.5
tPLZ
Disable Time
3.3
1.5
G to An or Bn
5.0
1.5
tPZH
Enable Time
3.3
1.5
DIR to An or Bn
5.0
1.5
tPZL
Enable Time
3.3
1.5
DIR to An or Bn
5.0
1.5
tPHZ
Disable Time
3.3
1.5
DIR to An or Bn
5.0
1.5
tPLZ
Disable Time
3.3
1.5
DIR to An or Bn
5.0
1.5
Note 6: Voltage Range 3.3 is 3.3V ± 0.3V; Voltage Range 5.0 is 5.0V ± 0.5V
TA = +25°C
CL = 50 pF
Typ
10.0
7.0
8.5
6.0
6.0
4.0
5.5
3.5
7.5
5.5
7.5
5.5
6.5
5.0
7.0
5.0
7.5
6.0
7.0
5.5
6.0
4.5
6.5
4.5
7.0
5.5
7.0
5.0
Max
15.5
11.0
13.5
10.5
10.0
7.0
9.0
7.5
12.5
9.0
12.5
9.5
11.0
8.0
11.0
8.0
12.0
10.0
11.5
9.0
12.5
9.5
13.0
9.0
11.5
9.0
13.5
9.5
TA = −40°C to +85°C
CL = 50 pF
Min
Max
1.5
17.0
1.5
12.0
1.5
14.5
1.5
11.5
1.5
11.0
1.0
7.5
1.5
10.0
1.0
8.0
1.5
14.0
1.5
10.0
1.5
14.0
1.5
10.5
1.0
11.5
1.0
9.0
1.0
12.5
1.0
9.0
1.0
13.0
1.0
11.0
1.0
12.5
1.0
10.0
1.0
14.0
1.0
10.5
1.5
14.5
1.0
10.5
1.0
13.5
1.0
10.0
1.5
15.0
1.0
10.0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AC Operating Requirements
VCC
Symbol
Parameter
(V)
(Note 7)
tS
Setup Time, HIGH or LOW,
3.3
Bus to Clock
5.0
tH
Hold Time, HIGH or LOW,
3.3
Bus to Clock
5.0
tW
Clock Pulse Width
3.3
HIGH or LOW
5.0
Note 7: Voltage Range 3.3 is 3.3V ± 0.3V; Voltage Range 5.0 is 5.0V ± 0.5V
TA = +25°C
TA = −40°C to +85°C
CL = 50 pF
CL = 50 pF
Typ
Guaranteed Minimum
2.0
3.0
3.5
1.5
2.0
2.0
−1.5
0
0
−0.5
1.0
1.0
2.0
3.5
4.0
2.0
3.0
3.0
Units
ns
ns
ns
Capacitance
CIN
CPD
CI/O
Symbol
Parameter
Input Capacitance
Power Dissipation Capacitance
Input/Output Capacitance
Typ
Units
Conditions
4.5
65.0
15.0
pF
VCC = OPEN
pF
VCC = 5.0V
pF
VCC = 5.0V
5
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