MC74AC646 查看數據表（PDF） - ON Semiconductor
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MC74AC646 Datasheet PDF : 11 Pages
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MC74AC646, MC74ACT646
AC CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)
74AC
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = −40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
Propagation Delay
tPLH
Clock to Bus
3.3 4.0 10.5 16.5 3.0 18.5
5.0 2.5 7.5 12 2.0 13
ns
3−6
Propagation Delay
tPHL
Clock to Bus
3.3 3.0 9.5 14.5 2.5 16
5.0 2.0 6.5 10.5 1.5 11.5
ns
3−6
Propagation Delay
tPLH
Bus to Bus
3.3 2.5 7.5 12 2.0 13.5
5.0 1.5 5.0 8.0 1.0 9.0
ns
3−5
Propagation Delay
tPHL
Bus to Bus
3.3 1.5 7.5 12.5 1.5 13.5
5.0 1.5 5.0 9.0 1.0 9.5
ns
3−5
Propagation Delay
tPLH
SBA or SAB to An or Bn
(w/An or Bn HIGH or LOW)
Propagation Delay
tPHL
SBA or SAB to An or Bn
(w/An or Bn HIGH or LOW)
Enable Time
tPZH
G to An or Bn
Enable Time
tPZL
G to An or Bn
Disable Time
tPHZ
G to An or Bn
Disable Time
tPLZ
G to An or Bn
Enable Time
tPZH
DIR to An or Bn
Enable Time
tPZL
DIR to An or Bn
Disable Time
tPHZ
DIR to An or Bn
Disable Time
tPLZ
DIR to An or Bn
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
3.3 2.0 8.5 13.5 1.5 15.5
5.0 1.5 6.0 10 1.5 11
ns
3−6
3.3 1.5 8.5 13.5 1.5 15
5.0 1.5 6.0 10 1.5 11
ns
3−6
3.3 2.5 7.0 11.5 2.0 12.5
5.0 1.5 5.0 8.5 1.5 9.0
ns
3−7
3.3 2.5 7.5 12.5 2.0 14
5.0 1.5 5.5 9.0 1.5 10
ns
3−8
3.3 3.0 8.0 12.5 2.5 13.5
5.0 2.0 6.5 10 2.0 11
ns
3−7
3.3 2.0 7.5 12 2.0 13.5
5.0 1.5 6.0 9.5 1.5 10.5
ns
3−8
3.3 2.0 6.5 11 1.5 12
5.0 1.5 5.0 7.5 1.0 8.5
ns
3−7
3.3 2.5 7.0 11.5 2.0 13
5.0 1.5 5.0 8.0 1.0 9.0
ns
3−8
3.3 2.5 7.5 11.5 1.5 12.5
5.0 1.5 5.5 9.5 1.5 10
ns
3−7
3.3 1.5 7.5 12 1.5 13.5
5.0 1.5 5.5 9.5 1.5 10.5
ns
3−8
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