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參數(shù)資料
| 型號： | SP3222EA |
| 元件分類： | 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收發(fā)器與0.1uF電容 |
| 文件頁數(shù)： | 13/19頁 |
| 文件大小： | 138K |
| 代理商： | SP3222EA |
Date: 06/22/04 SP3222EH/3232EH 3.3V, 460 Kbps RS-232 Transceivers
Copyright 2004 Sipex Corporation
13
The Contact Discharge Method applies the ESD
current directly to the EUT. This method was
devised to reduce the unpredictability of the
ESD arc. The discharge current rise time is
constant since the energy is directly transferred
without the air-gap arc. In situations such as
hand held systems, the ESD charge can be
directly discharged to the equipment from a
person already holding the equipment. The
current is transferred on to the keypad or the
serial port of the equipment directly and then
travels through the PCB and finally to the IC.
The circuit models in
Figures 17
and
18
represent the typical ESD testing circuits 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.
R
R
C
C
C
C
S
S
R
R
S
S
SW1
SW2
Device
Under
Test
DC Power
Source
S
S
Figure 17. ESD Test Circuit for Human Body Model
R
R
S
R
R
V
add up to 330
f
R
S
and
R
V
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
C
Device
Under
Test
DC Power
Source
S
S
Figure 18. ESD Test Circuit for IEC1000-4-2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP3222EB | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:CorporationTrue +3.0V to +5.5V RS-232 Transceivers |
| SP3222EB_0511 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:CorporationTrue +3.0V to +5.5V RS-232 Transceivers |
| SP3222EBCA | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:CorporationTrue +3.0V to +5.5V RS-232 Transceivers |
| SP3222EBCA/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:True +3.0V to +5.5V RS-232 Transceivers |
| SP3222EBCA-L | 功能描述:RS-232接口集成電路 RS232 2drvr/2rcvr temp 0C to 70C RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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