74F821(1999) 查看數據表（PDF） - Fairchild Semiconductor
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74F821 Datasheet PDF : 6 Pages
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AC Electrical Characteristics
Symbol
Parameter
fMAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Maximum Clock Frequency
Propagation Delay
CP to On
Output Enable Time
OE to On
Output Disable Time
OE to On
TA = +25°C
VCC = +5.0V
CL = 50 pF
Min
Typ
Max
100
150
2.0
6.4
9.5
2.0
6.2
9.5
2.0
5.8
10.5
2.0
6.3
10.5
1.5
3.4
7.0
1.5
3.5
7.0
AC Operating Requirements
TA = −55°C to +125°C
VCC = +5.0V
CL = 50 pF
Min
Max
60
2.0
10.5
2.0
10.5
2.0
13.0
2.0
13.0
1.0
7.5
1.0
7.5
TA = 0°C to +70°C
VCC = +5.0V
CL = 50 pF
Min
Max
70
2.0
10.5
2.0
10.5
2.0
11.5
2.0
11.5
1.5
7.5
1.5
7.5
Symbol
Parameter
tS(H)
tS(L)
tH(H)
tH(L)
tW(H)
tW(L)
Setup Time, HIGH or LOW
Dn to CP
Hold Time, HIGH or LOW
Dn to CP
CP Pulse Width
HIGH or LOW
TA = +25°C
VCC = +5.0V
Min
Max
2.5
2.5
2.5
2.5
5.0
5.0
TA = −55°C to +125°C
VCC = +5.0V
Min
Max
4.0
4.0
2.5
2.5
6.0
6.0
TA = 0°C to +70°C
VCC = +5.0V
Min
Max
3.0
3.0
2.5
2.5
6.0
6.0
Units
MHz
ns
ns
Units
ns
ns
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