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參數(shù)資料
| 型號： | FSTU3125QSC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-Bit Bus Switch with −2V Undershoot Protection |
| 中文描述： | CBT/FST/QS/5C/B SERIES, 4-BIT DRIVER, TRUE OUTPUT, PDSO16 |
| 封裝： | 0.150 INCH, MO-137, QSOP-16 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大小： | 136K |
| 代理商： | FSTU3125QSC |
www.fairchildsemi.com
4
F
AC Electrical Characteristics
Note 6:
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 7)
Note 7:
T
A
=
+
25
°
C, f
=
1 MHz, Capacitance is characterized but not tested.
Undershoot Characteristic
(Note 8)
Note 8:
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
=
50pF, RU
=
RD
=
500
V
CC
=
4.5 – 5.5V
Min
Max
0.25
Units
Conditions
Figure
Number
V
CC
=
4.0V
Min
Max
0.25
t
PHL
, t
PLH
Propagation Delay Bus to Bus (Note 6)
ns
V
I
=
OPEN
Figures
2, 3
t
PZH
, t
PZL
Output Enable Time
1.0
6.1
6.0
ns
V
I
=
7V for t
PZL
V
I
=
OPEN for t
PZH
V
I
=
7V for t
PLZ
V
I
=
OPEN for t
PHZ
Figures
2, 3
t
PHZ
, t
PLZ
Output Disable Time
1.5
6.4
6.6
ns
Figures
2, 3
Symbol
C
IN
Parameter
Typ
3
Max
Units
pF
Conditions
Control Pin Input Capacitance
V
CC
=
5.0V
C
I/O
Input/Output Capacitance
5
pF
V
CC
, OE
=
5.0V
Symbol
V
OUTU
Parameter
Min
2.5
Typ
Max
Units
V
Conditions
Output Voltage During Undershoot
V
OH
0.3
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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