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參數(shù)資料
| 型號： | FSTU32X800 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 20-Bit Bus Switch with Precharged Outputs and -2V Undershoot Protection |
| 中文描述： | 20位總線開關(guān)預(yù)充電輸出和- 2V的下沖保護 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 192K |
| 代理商： | FSTU32X800 |
www.fairchildsemi.com
4
F
AC Electrical Characteristics
Note 8:
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 50 pF load capacitance, when driven by an ideal voltage the source (zero output impedance).
Capacitance
(Note 9)
Note 9:
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
, RU
=
RD
=
500
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
Units
Conditions
Figure
Number
V
CC
=
4.0V
Min
Max
t
PHL
,
t
PLH
t
PZH
Propagation Delay Bus to Bus
(Note 8)
Output Enable Time
0.25
0.25
ns
V
I
=
OPEN
Figures
1, 2
7.0
30.0
35.0
ns
V
I
=
OPEN
BiasV
=
GND
V
I
=
7V
BiasV
=
3V
V
I
=
OPEN
BiasV
=
GND
V
I
=
7V
BiasV
=
3V
Figures
1, 2
OE
1
, OE
2
, to A
n
, B
n
t
PZL
7.0
30.0
35.0
ns
t
PHZ
Output Disable Time
OE
1
, OE
2
, to A
n
, B
n
1.0
6.1
6.5
ns
Figures
1, 2
t
PLZ
1.0
7.3
6.8
ns
Symbol
Parameter
Typ
Max
Units
Conditions
C
IN
Control Pin Input Capacitance
3.0
pF
V
CC
=
5.0V
C
I/O
Input/Output Capacitance
5.0
pF
V
CC
, OE
=
5.0V
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