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参数资料
| 型号： | SP3238EEA-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 INTELLIGENT 28SSOP |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 5/3 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | SP3238EEA-L/TR-ND |
16
Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com
SP3238E_100_020111
DEVICE PIN
HUMAN BODY
IEC61000-4-2
TESTED
MODEL
Air Discharge
Direct Contact
Level
Driver Outputs
+15kV
+8kV
4
Receiver Inputs
+15kV
+8kV
4
The circuit models in Figures 19 and 20 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
S) and the source capacitor (CS) are
1.5kan100pF,respectively. ForIEC-61000-4-2,
thecurrentlimitingresistor(R
S) and the source ca-
pacitor (C
S) are 330 an 150pF, respectively.
The higher C
S value and lower RS value in the
IEC61000-4-2 model are more stringent than the
Human Body Model. The larger storage capaci-
tor 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 21. ESD Test Waveform for IEC61000-4-2
Figure 20. ESD Test Circuit for IEC61000-4-2
Table 3. Transceiver ESD Tolerance Levels
RS and RV add up to 330 for IEC61000-4-2.
RC
Device
Under
Test
DC Power
Source
CS
RS
SW1
SW2
RV
Contact-Discharge Model
t = 0ns
t = 30ns
0A
15A
30A
I→
t →
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| SP3238EECA | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceiver |
| SP3238EECA/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceiver |
| SP3238EECA-L | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceiver |
| SP3238EECA-L/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceiver |
| SP3238EECY | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceiver |
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