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參數(shù)資料
| 型號(hào)： | SP3222EET-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 4/23頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 ESD TRUE 18WSOIC |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 2/2 |
| 規(guī)程： | RS232 |
| 電源電壓： | 3 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 18-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 18-SOIC |
| 包裝： | 帶卷 (TR) |
12
Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com
SP3222E/SP3232E_101_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) IEC61000-4-2 Air-Discharge
c) IEC61000-4-2 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
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 16. 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,
theymustguaranteeacertainamountofESD
protection since the system itself is exposed
to the outside environment and human pres-
ence. ThepremisewithIEC61000-4-2isthat
thesystemisrequiredtowithstandanamount
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
appliedtotheconnectorpins. Thetestcircuit
for IEC61000-4-2 is shown on Figure 17.
TherearetwomethodswithinIEC61000-4-2,
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 16. ESD Test Circuit for Human Body Model
RC
Device
Under
Test
DC Power
Source
CS
RS
SW1
SW2
DESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP3223EUEY-L | IC TXRX RS232 INTELLIGNT 20TSSOP |
| SP3232EBEP-L | IC TXRX RS232 ESD TRUE 16DIP |
| SP3232EHET-L/TR | IC TXRX RS232 ESD 16WSOIC |
| SP3232EUCT-L/TR | IC TXRX RS232 ESD 16WSOIC |
| SP3238ECY-L | IC TXRX RS232 INTELLIGNT 28TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP3222EEY | 制造商:Exar Corporation 功能描述: |
| SP3222EEY/TR | 功能描述:RS-232接口集成電路 RS232 Transceiver 3-5.5V 2-drvr/2-rcvr 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP3222EEY-L | 功能描述:RS-232接口集成電路 RS232 2drvr/2rcvr temp -40C to 85C 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP3222EEY-L/TR | 功能描述:RS-232接口集成電路 3V-5.5V RS-232 2-DRV/2-RCV LOW PWR 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP3222EH | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3.3V, 460 Kbps RS-232 Transceivers |
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