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参数资料
| 型号： | SP3222EUET-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 ESD TRUE 18WSOIC |
| 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： | 18-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 18-SOIC |
| 包装： | 带卷 (TR) |
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com
SP3222EU/SP3232EU_102_031413
ESD TOLERANCE
The
SP3222E/SP3232E series incorpo-
rates 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 +15kV
without damage nor latch-up.
There are different methods of ESD testing
applied:
a) MIL-STD-883, Method 3015.7
b) IEC 61000-4-2 Air-Discharge
c) IEC 61000-4-2 Direct Contact
The Human Body Model has been the
generally accepted ESD testing method
for semi-conductors. 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 19. This method will test the IC’s
capability to withstand an ESD transient
during normal handling such as in manu-
facturing areas where the ICs tend to be
handled frequently.
The IEC-61000-4-2, formerly IEC801-2, is
generallyusedfortestingESDonequipment
and systems. For system manufacturers,
they must guarantee a certain amount of
ESD protection since the system itself is
exposed to the outside environment and
human presence. The premise with IEC
61000-4-2 is that the system is required to
withstandanamountofstaticelectricitywhen
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 IEC 61000-4-2 is shown
on Figure 20. There are two methods within
IEC 61000-4-2, the Air Discharge method
and the Contact Discharge method.
With the Air Discharge Method, an ESD
voltage is applied 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
findanunpleasantzapjustbeforetheperson
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
throughair,ispredominantlyafunctionofthe
discharge current rather than the discharge
voltage. Variableswithanairdischargesuch
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
Figure 19. ESD Test Circuit for Human Body Model
RC
Device
Under
Test
DC Power
Source
CS
RS
SW1
SW2
DESCRIPTION
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP3222EUEY | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3.3V, 1000 Kbps RS-232 Transceivers |
| SP3222EUEY/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3.3V, 1000 Kbps RS-232 Transceivers |
| SP3222EUEY-L | 功能描述:RS-232接口集成电路 1MBPS 3-5.5V RS-232 2-DRV/2-RCV LOW PWR 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: |
| SP3222EUEY-L/TR | 功能描述:RS-232接口集成电路 1MBPS 3-5.5V RS-232 2-DRV/2-RCV LOW PWR 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: |
| SP3222EY | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:True +3.0V to +5.5V RS-232 Transceivers |
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