MC74AC257 Datasheet, PDF (7/8 Pages) ON Semiconductor – Quad 2−Input Multiplexer with 3−State Outputs

MC74AC257 MC74ACT257
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT
74ACT
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
Propagation Delay
In to Zn
tPHL
Propagation Delay
In to Zn
tPLH
Propagation Delay
S to Zn
tPHL
Propagation Delay
S to Zn
tPZH
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
5.0 1.5 5.0 7.0 1.0 7.5
ns
3-6
5.0 2.0 6.0 7.5 1.5 8.5
ns
3-6
5.0 2.0 7.0 9.5 1.5 10.5
ns
3-6
5.0 2.5 7.0 10.5 2.0 11.5
ns
3-6
5.0 2.0 6.0 8.0 1.5 9.0
ns
3-7
5.0 2.0 6.0 8.0 1.5 9.0
ns
3-8
5.0 2.5 6.5 9.0 1.5 10.0
ns
3-7
5.0 2.0 6.0 7.5 1.5 8.5
ns
3-8
CAPACITANCE
Symbol
Parameter
CIN
CPD
Input Capacitance
Power Dissipation Capacitance
Value
Typ
Unit
4.5
pF
50
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
FACT DATA
5-7