74AC646(1998) Просмотр технического описания (PDF) - Fairchild Semiconductor
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74AC646 Datasheet PDF : 10 Pages
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AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH
Propagation Delay
Clock to Bus
tPHL
Propagation Delay
Clock to Bus
tPLH
Propagation Delay
Bus to Bus
tPHL
Propagation Delay
Bus to Bus
tPLH
Propagation Delay
SBA or SAB to An to Bn
(w/An or Bn
HIGH or LOW)
tPHL
Propagation Delay
SBA or SAB to An to Bn
(w/An or Bn
HIGH or LOW)
tPZH
Enable Time
G to An or Bn
tPZL
Enable Time
G to An or Bn
tPHZ
Disable Time
G to An or Bn
tPLZ
Disable Time
G to An or Bn
tPZH
Enable Time
DIR to An or Bn
tPZL
Enable Time
DIR to An or Bn
tPHZ
Disable Time
DIR to An or Bn
tPLZ
Disable Time
DIR to An or Bn
Note 10: Voltage Range 5.0 is 5.0V ±0.5V
VCC
(V)
(Note 10)
5.0
TA = +25°C
CL = 50 pF
Min
Typ
Max
3.5
12.0
14.5
5.0
4.0
12.0
14.5
5.0
3.0
8.5
10.5
5.0
2.5
8.5
10.5
5.0
3.0
9.5
11.5
5.0
3.0
9.5
11.5
5.0
2.0
9.0
11.0
5.0
3.5
9.0
11.0
5.0
5.0
10.5
13.0
5.0
3.5
10.0
12.5
5.0
2.0
6.5
10.5
5.0
3.5
6.5
10.5
5.0
5.0
8.5
12.5
5.0
3.5
8.5
12.5
TA = −40°C to +85°C
CL = 50 pF
Min
Max
3.0
16.0
3.5
16.0
2.5
11.5
2.0
11.5
2.5
12.5
2.5
12.5
1.5
12.0
3.0
12.0
4.5
14.5
3.0
14.0
1.5
11.5
3.0
11.5
4.5
13.5
3.0
13.5
Units
ns
ns
ns
ns
ns
ns
ns
ns
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ns
ns
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7
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