74F552 查看數據表（PDF） - Fairchild Semiconductor
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74F552 Datasheet PDF : 8 Pages
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AC Electrical Characteristics
Symbol
Parameter
tPLH
Propagation Delay
tPHL
CPS or CPR to An or Bn
tPLH
Propagation Delay
CPS or CPR to FS or FR
tPHL
Propagation Delay
OEAS to FS
tPLH
Propagation Delay
tPHL
CPR to Parity
tPLH
Propagation Delay
tPHL
CPS to ERROR
tPLH
Propagation Delay
tPHL
OEAS to ERROR
tPZH
Enable Time OEAS
tPZL
or OEBR to Bn or An
tPHZ
Disable Time OEAS
tPLZ
or OEBR to Bn or An
tPZH
Enable Time
tPZL
OEBR to Parity
tPHZ
Disable Time
tPLZ
OEBR to Parity
AC Operating Requirements
Symbol
Parameter
tS(H)
tS(L)
tH(H)
tH(L)
tS(H)
tS(L)
tH(H)
tH(L)
tW(H)
tW(L)
Setup Time, HIGH or LOW
An or Bn or Parity
to CPS or CPR
Hold Time, HIGH or LOW
An or Bn or Parity
to CPS or CPR
Setup, Time HIGH or LOW
CES or CER to CPS or CPR
Hold Time, HIGH or LOW
CES or CER to CPS or CPR
Pulse Width, HIGH or LOW
CPS or CPR
TA = +25°C
VCC = +5.0V
CL = 50 pF
Min
Typ
Max
3.5
6.0
8.0
4.0
7.0
9.5
3.0
5.5
7.5
3.5
6.0
8.0
8.0
14.0
18.0
8.5
14.5
18.5
8.0
13.5
17.5
7.5
13.0
16.5
3.5
6.0
8.0
3.0
5.0
7.0
3.0
5.5
7.5
3.5
7.0
9.5
3.0
6.5
8.5
3.0
5.5
7.5
3.0
4.5
7.5
3.5
6.0
9.5
3.0
5.5
8.5
3.0
6.5
7.5
TA = 0°C to +70°C
VCC = +5.0V
CL = 50 pF
Min
Max
3.0
9.0
3.5
10.5
2.5
8.5
3.0
9.0
7.0
20.0
7.5
20.5
7.0
19.5
6.5
18.5
3.0
9.0
2.5
8.0
2.5
8.5
3.0
10.5
2.5
9.5
2.5
8.5
2.5
8.5
3.0
10.5
2.5
9.5
2.5
8.5
Units
ns
ns
ns
ns
ns
ns
ns
ns
TA = +25°C
VCC = +5.0V
Min
Max
7.5
4.5
0
0
6.0
10.0
0
0
4.0
6.0
TA = 0°C to +70°C
VCC = +5.0V
Min
Max
8.5
5.0
0
0
7.0
11.5
0
0
4.5
7.0
Units
ns
ns
ns
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