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參數(shù)資料
| 型號： | SP487E |
| 英文描述： | Enhanced Quad RS-485/RS-422 Line Drivers |
| 中文描述： | 增強四路RS-485/RS-422收發(fā)線驅(qū)動器 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 111K |
| 代理商： | SP487E |
8
SP486E/487EDS/06 SP486E/487E Enhanced Quad RS-485/RS-422 Line Drivers Copyright 2000 Sipex Corporation
The circuit model in
Figures 6 and 7
represent
the typical ESD testing circuit used for all three
methods. The C
S
is initially charged with the DC
power supply when the first switch (SW1) is on.
Now that the capacitor is charged, the second
switch (SW2) is on while SW1 switches off. The
voltage stored in the capacitor is then applied
through R
S
, the current limiting resistor, onto the
device under test (DUT). In ESD tests, the SW2
switch is pulsed so that the device under test
receives a duration of voltage.
For the Human Body Model, the current limiting
resistor (R
) and the source capacitor (C
) are
1.5kW an 100pF, respectively. For IEC-1000-4-2,
the current limiting resistor (R
) and the source
capacitor (C
S
) are 330W an 150pF, respectively.
The higher C
value and lower R
value in the
IEC1000-4-2 model are more stringent than the
Human Body Model. The larger storage capacitor
injects a higher voltage to the test point when
SW2 is switched on. The lower current limiting
resistor increases the current charge onto the test
point.
DEVICE PIN
TESTED
HUMAN BODY
MODEL Air Discharge Direct Contact Level
IEC1000-4-2
Driver Outputs
Receiver Inputs
+15kV
+15kV
+15kV
+15kV
+8kV
+8kV
4
4
Table 3. Transceiver ESD Tolerance Levels
相關PDF資料 |
PDF描述 |
|---|---|
| SP487EEP | Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487EET | Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487ECP | Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487ECT | Enhanced Quad RS-485/RS-422 Line Drivers |
| SP488ES | Quad RS-485/RS-422 Line Receivers |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP487ECP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487ECT | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487EEP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487EET | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced Quad RS-485/RS-422 Line Drivers |
| SP487ES | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Quad RS-485/RS-422 Line Drivers |
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