MC74ACT257D Ver la hoja de datos (PDF) - Motorola => Freescale
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MC74ACT257D Datasheet PDF : 8 Pages
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MC74AC257 MC74ACT257
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
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
tPLH
tPHL
tPLH
tPHL
tPZH
Propagation Delay
In to Zn
Propagation Delay
In to Zn
Propagation Delay
S to Zn
Propagation Delay
S to Zn
Output Enable Time
3.3 1.5 5.0 8.5 1.0 9.0
ns
3-5
5.0 1.5 4.0 6.0 1.0 7.0
3.3 1.5 6.0 8.5 1.0 9.0
ns
3-5
5.0 1.5 4.5 6.0 1.0 7.0
3.3 1.5 7.0 10.5 1.5 11.5
ns
3-6
5.0 1.5 5.0 7.5 1.0 8.5
3.3 1.5 7.5 10.5 1.5 11.5
ns
3-6
5.0 1.5 5.5 7.5 1.0 8.5
3.3 1.5 6.5 9.5 1.0 10.5
ns
3-7
5.0 1.5 5.0 7.5 1.0 8.5
tPZL
Output Enable Time
3.3 1.5 5.5 9.0 1.0 10.0
ns
3-8
5.0 1.5 5.0 8.5 1.0 9.5
tPHZ
Output Disable Time
3.3 1.5 5.5 10.0 1.0 11.0
ns
3-7
5.0 1.5 5.0 9.0 1.0 10.0
tPLZ
Output Disable Time
3.3 1.5 5.5 9.0 1.0 10.0
ns
3-8
5.0 1.5 5.0 8.0 1.0 9.0
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
FACT DATA
5-5
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