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參數(shù)資料
| 型號： | SP3223EH |
| 英文描述： | High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers(高速，智能+3.0V 至 +5.5V RS-232收發(fā)器（2發(fā)2收）) |
| 中文描述： | 高速智能3.0V至5.5V的RS - 232收發(fā)器（高速，智能3.0V至5.5V的RS - 232接口收發(fā)器（2發(fā)2收）） |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 230K |
| 代理商： | SP3223EH |
SP3223EHDS/11
SP3223EH +3.0V to +5.5V RS-232 Transceivers
19
Copyright 2000 Sipex Corporation
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
The circuit models in
Figures 25
and
26
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
1.5k
an 100pF, respectively. For IEC-1000-4-
2, the current limiting resistor (R
) and the source
capacitor (C
S
) are 330
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.
Figure 27. ESD Test Waveform for IEC1000-4-2
t=0ns
t=30ns
0A
15A
30A
t
￥
i
￥
Figure 26. ESD Test Circuit for IEC1000-4-2
Table 4. Transceiver ESD Tolerance Levels
R
f
RS and RV add up to 330
for IEC1000-4-2.
Contact-Discharge Module
R
R
V
V
R
V
R
R
C
C
C
C
S
S
R
R
S
S
SW1
SW2
R
C
Device
Under
Test
DC Power
Source
C
S
S
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP3223EHCA | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers |
| SP3223EHCA-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP3223EHCP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers |
| SP3223EHCY | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers |
| SP3223EHCY-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
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