74AC253, 74ACT253 Dual 4-Input Multiplexer with 3-STATE Outputs
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74AC253, 74ACT253 Rev. 1.5 7
AC Electrical Characteristics for AC
Note:
6. Voltage range 3.3 is 3.3V ± 0.3V. Voltage range 5.0 is 5.0V ± 0.5V.
AC Electrical Characteristics for ACT
Note:
7. Voltage range 5.0 is 5.0V ± 0.5V.
Capacitance
Symbol Parameter V
CC
(V)
(6)
T
A
= +25°C
C
L
= 50pF
T
A
= –40°C to +85°C,
C
L
= 50pF
UnitsMin. Typ. Max. Min Max
t
PLH
Propagation Delay,
S
n
to Z
n
3.3 2.0 8.5 15.5 2.0 17.5 ns
5.0 2.0 6.5 11.0 1.5 12.5
t
PHL
Propagation Delay,
S
n
to Z
n
3.3 2.5 9.5 16.0 2.0 18.0 ns
5.0 2.0 7.0 11.5 1.5 13.0
t
PLH
Propagation Delay,
I
n
to Z
n
3.3 1.5 7.0 14.5 1.5 17.0 ns
5.0 1.5 5.5 10.0 1.5 11.5
t
PHL
Propagation Delay,
I
n
to Z
n
3.3 2.0 7.5 13.0 1.5 15.0 ns
5.0 1.5 5.5 9.5 1.5 11.0
t
PZH
Output Enable Time 3.3 1.5 4.5 8.0 1.0 8.5 ns
5.0 1.5 3.5 6.0 1.0 6.5
t
PZL
Output Enable Time 3.3 1.5 5.0 8.0 1.0 9.0 ns
5.0 1.5 3.5 6.0 1.0 7.0
t
PHZ
Output Disable Time 3.3 2.0 5.5 9.5 1.5 10.0 ns
5.0 2.0 5.0 8.0 1.5 8.5
t
PLZ
Output Disable Time 3.3 1.5 5.0 8.0 1.0 9.0 ns
5.0 1.5 4.0 7.0 1.0 7.5
Symbol Parameter V
CC
(V)
(7)
T
A
= +25°C,
C
L
= 50pF
T
A
= –40°C to +85°C,
C
L
= 50pF
UnitsMin. Typ. Max. Min. Max.
t
PLH
Propagation Delay, S
n
to Z
n
5.0 2.0 7.0 11.5 2.0 13.0 ns
t
PHL
Propagation Delay, S
n
to Z
n
5.0 3.0 7.5 13.0 2.5 14.5 ns
t
PLH
Propagation Delay, I
n
to Z
n
5.0 2.5 5.5 10.0 2.0 11.0 ns
t
PHL
Propagation Delay, I
n
to Z
n
5.0 3.5 6.5 11.0 3.0 12.5 ns
t
PZH
Output Enable Time 5.0 2.0 4.5 7.5 1.5 8.5 ns
t
PZL
Output Enable Time 5.0 2.0 5.0 8.0 1.5 9.0 ns
t
PHZ
Output Disable Time 5.0 3.0 6.0 9.5 2.5 10.0 ns
t
PLZ
Output Disable Time 5.0 2.5 4.5 7.5 2.0 8.5 ns
Symbol Parameter Conditions Typ. Units
C
IN
Input Capacitance V
CC
= OPEN 4.5 pF
C
PD
Power Dissipation Capacitance V
CC
= 5.0V 50.0 pF
