54AC257 Datasheet, PDF (6/8 Pages) National Semiconductor (TI) – Quad 2-Input Multiplexer with TRI-STATE Outputs

54AC257, 54ACT257
OBSOLETE
SNOS102B – JULY 1998 – REVISED APRIL 2013
AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
V_CC
(V) ⁽¹⁾
t_PLH
Propagation Delay I_n to Z_n
3.3
5.0
t_PHL
Propagation Delay I_n to Z_n
3.3
5.0
t_PLH
Propagation Delay S to Z_n
3.3
5.0
t_PHL
Propagation Delay S to Z_n
3.3
5.0
3.3
t_PZH
Output Enable Time
5.0
3.3
t_PZL
Output Enable Time
5.0
3.3
t_PHZ
Output Disable Time
5.0
3.3
t_PLZ
Output Disable Time
5.0
(1) Voltage Range 3.3 is 3.0V ±0.3V. Voltage Range 5.0 is 5.0V ±0.5V.
AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
V_CC
(V) ⁽¹⁾
t_PLH
Propagation Delay
I_n to Z_n
t_PHL
Propagation Delay
I_n to Z_n
t_PLH
Propagation Delay
S to Z_n
t_PHL
Propagation Delay
S to Z_n
t_PZH
Output Enable Time
t_PZL
Output Enable Time
t_PHZ
Output Disable Time
t_PLZ
Output Disable Time
(1) Voltage Range 5.0 is 5.0V ±0.5V.
CAPACITANCE
Symbol
Parameter
C_IN
Input Capacitance
C_PD
Power Dissipation Capacitance
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Typ
4.5
50.0
54AC
T_A = −55°C
to +125°C
C_L = 50 pF
1.0
11.0
1.0
8.0
1.0
11.0
1.0
8.5
1.0
14.5
1.0
11.0
1.0
14.5
1.0
11.0
1.0
13.0
1.0
10.0
1.0
11.0
1.0
9.5
1.0
13.0
1.0
11.0
1.0
10.5
1.0
9.5
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Units
ns
ns
ns
ns
ns
ns
ns
ns
54ACT
T_A = −55°C
to +125°C
C_L = 50 pF
1.0
8.0
1.0
9.5
1.0
11.0
1.0
11.5
1.0
9.5
1.0
9.5
1.0
10.5
1.0
9.5
Units
ns
ns
ns
ns
ns
ns
ns
ns
Units
pF
pF
Conditions
V_CC = OPEN
V_CC = 5.0V
6
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