MC74AC253(2015) 查看數據表（PDF） - ON Semiconductor
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MC74AC253 Datasheet PDF : 9 Pages
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MC74AC253, MC74ACT253
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
Sn to Zn
Propagation Delay
tPHL
Sn to Zn
Propagation Delay
tPLH
In to Zn
Propagation Delay
tPHL
In to Zn
tPZH
Output Enable Time
3.3 2.0
− 15.5 2.0 17.5
5.0 2.0
− 11.0 1.5 12.5
ns
3−6
3.3 2.5
− 16.0 2.0 18.0
5.0 2.0
− 11.5 1.5 13.0
ns
3−6
3.3 1.5
− 14.5 1.5 17.0
5.0 1.5
− 10.0 1.5 11.5
ns
3−5
3.3 2.0
− 13.0 1.5 15.0
5.0 1.5
−
9.5 1.5 11.0
ns
3−5
3.3 1.5
−
8.0 1.0 8.5
5.0 1.5
−
6.0 1.0 6.5
ns
3−7
tPZL
Output Enable Time
3.3 1.5
−
8.0 1.0 9.0
5.0 1.5
−
6.0 1.0 7.0
ns
3−8
tPHZ
Output Disable Time
3.3 2.0
−
9.5 1.5 10.0
5.0 2.0
−
8.0 1.5 8.5
ns
3−7
tPLZ
Output Disable Time
3.3 1.5
−
8.0 1.0 9.0
5.0 1.5
−
7.0 1.0 7.5
ns
3−8
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
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