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参数资料
| 型号： | SP3223EUCA-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 INTELLIGENT 20SSOP |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-707 www.exar.com
SP3223E/EB/EU_0_06272
ESD TOLERANCE
The
SP3223 series incorporates
ruggedized ESD cells on all driver output
and receiver input pins.The ESD structure is
improved over our previous family for more
rugged applications and environments
sensitive to electro-static discharges and
associated transients. The improved ESD
tolerance is at least +5kV without damage
nor latch-up.
There are different methods of ESD testing
applied:
a) MIL-STD-883, Method 305.7
b) IEC6000-4-2 Air-Discharge
c) IEC6000-4-2 Direct Contact
The Human Body Model has been the
generally accepted ESD testing method
for semiconductors. This method is also
specified in MIL-STD-883, Method 3015.7
for ESD testing.The premise of this ESD test
is to simulate the human body’s potential to
store electro-static energy and discharge it
to an integrated circuit. The simulation is
performed by using a test model as shown
in Figure 24. This method will test the IC’s
capability to withstand an ESD transient
during normal handling such as in manu-
facturing areas where the IC's tend to be
handled frequently.
The IEC-6000-4-2, formerly IEC80-2, is
generallyusedfortestingESDonequipment
and systems. For system manufacturers,
they must guarantee a certain amount of
ESD protection since the system itself is ex-
posedtotheoutsideenvironmentandhuman
presence. The premise with IEC6000-4-2
is that the system is required to withstand
an amount of static electricity when ESD
is applied to points and surfaces of the
equipment that are accessible to personnel
during normal usage. The transceiver IC
receives most of the ESD current when the
ESD source is applied to the connector pins.
The test circuit for IEC6000-4-2 is shown
on Figure 25. There are two methods within
IEC6000-4-2,theAirDischargemethodand
the Contact Discharge method. With the Air
DischargeMethod,anESDvoltageisapplied
to the equipment under test (EUT) through
air. This simulates an electrically charged
person ready to connect a cable onto the
rear of the system only to find an unpleas-
ant zap just before the person touches the
back panel. The high energy potential on the
person discharges through an arcing path
to the rear panel of the system before he or
she even touches the system. This energy,
whether discharged directly or through air,
is predominantly a function of the discharge
current rather than the discharge voltage.
Variables with an air discharge such as
approach speed of the object carrying the
ESD potential to the system and humidity
will tend to change the discharge current.
For example, the rise time of the discharge
current varies with the approach speed.
The Contact Discharge Method applies the
ESDcurrentdirectlytotheEUT. Thismethod
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 situ-
ations 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.
Figure 24. ESD Test Circuit for Human Body Model
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP3223EUCP | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceivers |
| SP3223EUCY | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Intelligent +3.0V to +5.5V RS-232 Transceivers |
| SP3223EUCY/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers |
| SP3223EUCY-L | 功能描述:RS-232接口集成电路 HIGH SPD INTELLIGENT +3V-+5.5V RS-232 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| SP3223EUCY-L/TR | 功能描述:RS-232接口集成电路 HIGH SPD INTELLIGENT +3V-+5.5V RS-232 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
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