參數(shù)資料
型號(hào): FST34X2245QSP
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: 32-Bit Bus Switch with 25з Series Resistors in Outputs
中文描述: CBT/FST/QS/5C/B SERIES, QUAD 8-BIT DRIVER, TRUE OUTPUT, PDSO80
封裝: 0.150 INCH, MO-154, QVSOP-80
文件頁(yè)數(shù): 4/5頁(yè)
文件大?。?/td> 361K
代理商: FST34X2245QSP
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 50pF 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
Note:
C
L
includes load and stray capacitance
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
=
50pF, RU
=
RD
=
500
V
CC
=
4.5 – 5.5V
Min
Max
1.25
Units
Conditions
Figure
Number
V
CC
=
4.0V
Min
Max
1.25
t
PHL
, t
PLH
Propagation Delay Bus to Bus
(Note 8)
Output Enable Time
ns
V
I
=
OPEN
Figures
1, 2
Figures
1, 2
t
PZH
, t
PZL
1.0
5.9
6.4
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
t
PHZ
, t
PLZ
Output Disable Time
1.0
6.0
5.7
ns
Figures
1, 2
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
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