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FST3345WM 数据表(PDF) 3 Page - Fairchild Semiconductor

部件名 FST3345WM
功能描述  8-Bit Bus Switch
PDF  5 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FST3345WM 数据表(HTML) 3 Page - Fairchild Semiconductor

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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 the source (zero output impedance).
Capacitance (Note 8)
Note 8: TA
25qC, f 1 MHz, Capacitance is characterized but not tested.
AC Loading and Waveforms
Note: Input driven by 50
: source terminated in 50 :
Note: CL includes load and stray capacitance
Note: Input PRR
1.0 MHz tW 500 nS
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
Symbol
Parameter
TA 40 qC to 85 qC,
CL 50 pF, RU RD 500:
Units
Conditions
Figure
No.
VCC 4.5  5.5V
VCC 4.0V
MinMax
MinMax
tPHL,tPLH
Propagation Delay Bus to Bus
(Note 7)
0.25
0.25
ns
VI OPEN
Figures
1, 2
tPZH, tPZL
Output Enable Time
1.5
6.5
7.0
ns
VI 7V for tPZL
Figures
1, 2
VI OPEN for tPZH
tPHZ, tPLZ
Output Disable Time
1.0
8.0
8.2
ns
VI 7V for tPLZ
Figures
1, 2
VI OPEN for tPHZ
Symbol
Parameter
Typ
Max
Units
Conditions
CIN
Control Pin Input Capacitance
4
pF
VCC 5.0V
CI/O
Input/Output Capacitance
5
pF
VCC, OE 5.0V, OE 0V



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