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SP3222EBCA/TR датащи(PDF) 14 Page - Sipex Corporation

номер детали SP3222EBCA/TR
подробное описание детали  CorporationTrue 3.0V to 5.5V RS-232 Transceivers
PDF  25 Pages
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производитель  SIPEX [Sipex Corporation]
домашняя страница  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP3222EBCA/TR датащи(HTML) 14 Page - Sipex Corporation

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Date:11/02/05
SP3222EB/SP3232EB True +3.0V to +5.5V RS-232 Transceivers
© Copyright 2005 Sipex Corporation
1
Date:02/27/05
SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers
© Copyright 2005 Sipex Corporation
14
Figure 20. ESD Test Waveform for IEC1000-4-2
30A
0A
15A
t=30ns
t ➙
t=0ns
Device Pin
Human Body
IEC1000-4-2
Tested
Model
Air Discharge Direct Contact
Level
Driver Outputs
±
15kV
±
15kV
±
8kV
4
Receiver Inputs
±
15kV
±
15kV
±
8kV
4
Table 3. Transceiver ESD Tolerance Levels
For the Human Body Model, the current
limiting resistor (R
S) and the source capacitor
(C
S) are 1.5k
an 100pF, respectively. For
IEC-1000-4-2, the current limiting resistor (R
S)
and the source capacitor (C
S) are 330
an
150pF, respectively.
The higher C
S value and lower RS value in the
IEC1000-4-2 model are more stringent than the
Human Body Model. The larger storage capacitor
injectsahighervoltagetothetestpointwhenSW2
is switched on. The lower current limiting resistor
increases the current charge onto the test point.



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