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| 型号： | SP3220 |
| 元件分类： | 外设及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 电可擦除可编程逻辑器件 |
| 文件页数： | 14/19页 |
| 文件大小： | 160K |
| 代理商： | SP3220 |
Rev: A Date:12/11/03 SP3220EB/EU +3.0 to +5.0V RS-232 Transceivers
Copyright 2002 Sipex Corporation
14
R
R
C
C
C
C
S
S
R
R
S
S
SW1
SW2
Device
Under
Test
DC Power
Source
S
S
Figure 20. ESD Test Circuit for Human Body Model
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 transfered
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 directly discharged to 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
Figure 20 and 21
repre-
sent the typical ESD testing circuits used for all
three methods. The C
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
, the current limiting
resistor, onto the device under test (DUT). In
ESD tests, the SW2 switch is pulsed so that the
device under test recives a duration of voltage.
Figure 21. ESD Test Circuit for IEC1000-4-2
R
R
S
R
R
V
R
S
and
R
V
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
R
S
相关PDF资料 |
PDF描述 |
|---|---|
| SP3220EY | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| SP3220EUCT | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| SP3220EUCY | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| SP3220EUEA | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| SP3220CA | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP3-2-20 | 制造商:RHOMBUS-IND 制造商全称:Rhombus Industries Inc. 功能描述:SP3 Series Mini-SIP Passive Delay Modules |
| SP3220B | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Speed +3.0V to +5.5V RS-232 Driver/Receiver Pair |
| SP3220BCA | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Speed +3.0V to +5.5V RS-232 Driver/Receiver Pair |
| SP3220BCT | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Speed +3.0V to +5.5V RS-232 Driver/Receiver Pair |
| SP3220BCY | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Speed +3.0V to +5.5V RS-232 Driver/Receiver Pair |
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