參數(shù)資料
型號: FST34170
廠商: Fairchild Semiconductor Corporation
英文描述: 17-Bit to 34-Bit Multiplexer/Demultiplexer Bus Switch
中文描述: 17位至34位復用器/解復用器總線開關
文件頁數(shù): 3/4頁
文件大?。?/td> 135K
代理商: FST34170
3
www.fairchildsemi.com
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.
AC Loading and Waveforms
Note:
Input driven by 50
source terminated in 50
Note:
C
L
includes load and stray capacitance, C
L
=
50 pF
Note:
Input PRR
=
1.0 MHz, t
W
=
500 ns
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
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
t
PZH
A or B, to B or A (Note 7)
Output Enable Time,
SEL to A, B
ns
V
I
=
OPEN
Figures 1, 2
7.0
30.0
35.0
ns
V
I
=
OPEN for t
PZH
Figures 1, 2
t
PZL
Output Enable Time,
SEL to A, B
Output Disable Time,
7.0
30.0
35.0
ns
V
I
=
7V for t
PZL
Figures 1, 2
t
PHZ
1.0
6.9
7.3
ns
V
I
=
OPEN for t
PHZ
Figures 1, 2
SEL to A, B
Output Disable Time,
SEL to A, B
t
PLZ
1.0
7.7
7.7
ns
V
I
=
7V for t
PLZ
Figures 1, 2
Symbol
Parameter
Control pin Input Capacitance
Typ
4
Max
Units
pF
Conditions
C
IN
C
I/O
OFF
V
CC
=
5.0V
V
CC
=
5.0V, Switch OFF
Input/Output Capacitance
OFF State
8
pF
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