参数资料
型号: SP3203EEY
元件分类: RS-232
英文描述: 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors
中文描述: 5V的高速RS - 232收发器与0.1uF电容
文件页数: 14/16页
文件大小: 509K
代理商: SP3203EEY
Rev.
2/7
/01
SP3203E
14
Copyright 2001 Sipex Corporation
DEVICE PIN
TESTED
HUMAN BODY
MODEL
Air Discharge Direct Contact
IEC1000-4-2
Level
Driver Outputs
Receiver Inputs
±
15kV
±
15kV
±
15kV
±
15kV
±
8kV
±
8kV
4
4
R
R
S
R
R
V
f
R
S
and
R
V
add up to 330
f
or IEC1000-4-2.
Contact-Discharge Module
R
R
V
V
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
R
S
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.
Figure 20. ESD Test Waveform for IEC1000-4-2
t=0ns
t=30ns
0A
15A
30A
t
i
Figure 19. ESD Test Circuit for IEC1000-4-2
Table 2. Transceiver ESD Tolerance Levels
相关PDF资料
PDF描述
SP320 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors
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