74F543 查看數據表（PDF） - Fairchild Semiconductor
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74F543 Datasheet PDF : 7 Pages
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AC Electrical Characteristics
Symbol
Parameter
tPLH
Propagation Delay
tPHL
Transparent Mode
An to Bn or Bn to An
tPLH
Propagation Delay
tPHL
LEBA to An
tPLH
Propagation Delay
tPHL
LEAB to Bn
tPZH
Output Enable Time
tPZL
OEBA or OEAB to An or Bn
CEBA or CEAB to An or Bn
tPHZ
Output Disable Time
tPLZ
OEBA or OEAB to An or Bn
CEBA or CEAB to An or Bn
AC Operating Requirements
Symbol
Parameter
tS(H)
tS(L)
tH(H)
tH(L)
tW(L)
Setup Time, HIGH or LOW
An or Bn to LEBA or LEAB
Hold Time, HIGH or LOW
An or Bn to LEBA or LEAB
Latch Enable, B to A or
B to A Pulse Width, LOW
TA = +25°C
VCC = +5.0V
CL = 50 pF
Min
Typ
Max
3.0
5.5
7.5
3.0
5.0
6.5
4.5
8.5
11.0
4.5
8.5
11.0
4.5
8.5
11.0
4.5
8.5
11.0
3.0
7.0
9.0
4.0
7.5
10.5
1.0
6.0
8.0
2.5
5.5
10.5
TA = 0°C to +70°C
CL = 50 pF
Min
Max
3.0
8.5
3.0
7.5
4.5
12.5
4.5
12.5
4.5
12.5
4.5
12.5
3.0
10.0
4.0
12.0
1.0
9.0
2.5
11.5
TA = +25°C
VCC = +5.0V
Min
Max
3.0
3.0
3.0
3.0
8.0
TA = 0°C to +70°C
Min
Max
3.5
3.5
3.5
3.5
9.0
Units
ns
ns
ns
ns
Units
ns
ns
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