參數(shù)資料
型號: FST3384A
文件頁數(shù): 147/178頁
文件大?。?/td> 3973K
代理商: FST3384A
www.fairchildsemi.com
4
F
AC Electrical Characteristics
Note 7:
This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On
resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance).
Capacitance
(Note 8)
Note 8:
T
A
=
+
25
°
C, f
=
1 MHz, Capacitance is characterized but not tested.
Undershoot Characteristic
(Note 9)
Note 9:
This test is intended to characterize the device’s protective capabilities by maintaining output signal integrity during an input transient voltage
undershoot event.
FIGURE 1.
Device Test Conditions
Transient
Input Voltage (V
IN
) Waveform
Symbol
Parameter
T
A
=
40
°
C to
+
85
°
C,
C
L
=
50 pF, RU
=
RD
=
500
V
CC
=
4.5
5.5V
Min
Max
0.25
Units
Conditions
Figure No.
V
CC
=
4.0V
Min
Max
0.25
t
PHL
, t
PLH
A or B, to B or A (Note 7)
ns
V
I
=
OPEN
Figure 2
Figure 3
Figure 2
Figure 3
t
PZH
Output Enable Time,
7.0
30.0
35.0
ns
V
I
=
OPEN for t
PZH
BiasV
=
GND
V
I
=
7V for t
PZL
BiasV
=
3V
V
I
=
OPEN for t
PHZ
BiasV
=
GND
V
I
=
7V for t
PLZ
,
BiasV
=
3V
SEL to A, B
Output Enable Time,
SEL to A, B
t
PZL
7.0
30.0
35.0
ns
Figure 2
Figure 3
t
PHZ
Output Disable Time,
SEL to A, B
Output Disable Time,
1.0
6.9
7.3
ns
Figure 2
Figure 3
t
PLZ
1.0
7.7
7.7
ns
Figure 2
Figure 3
SEL to A, B
Symbol
Parameter
Typ
Max
Units
Conditions
C
IN
C
I/O
OFF
Control pin Input Capacitance
Input/Output Capacitance “OFF State”
4
8
pF
pF
V
CC
=
5.0V
V
CC
=
5.0V, Switch OFF
Symbol
Parameter
Min
Typ
Max
Units
Conditions
V
OUTU
Output Voltage During Undershoot
2.5
V
OH
0.3
V
Figure 1
Parameter
V
IN
R
1
=
R
2
V
TRI
V
CC
Value
Units
V
V
V
see Waveform
100K
11.0
5.5
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