Electronic component search and free download site.
Transistors,MosFET ,Diode,Integrated circuits

LMS202EIMWX View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
LMS202EIMWX 15KV ESD Rated, 5V Single Supply TIA/EIA-232 Dual Transceivers National-Semiconductor
National ->Texas Instruments National-Semiconductor
LMS202EIMWX Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Application Information (Continued)
MACHINE MODEL
The Machine Model is the standard ESD test method in
Japan and the automotive industry. It simulates a charge on
large object discharging through the IC device. This takes
place in automated test and handling systems. The equip-
ment can accumulate static charge due to improper ground-
ing, which is transmitted through the IC when it is picked and
placed.
The waveform is obtained by discharging 400V volts capaci-
tor to the device. Resistor, R2 = 0.
The parasitic inductance, L, from the PCB affects the peak
current and period of the waveform. For L = 0.5µF, the peak
current is approximately 7A with a period of 60 ns. For L =
2.5µH, the peak current is reduced to 4A with a period of 140
ns.
IEC 1000-4-2 (EN61000-4-2)
The European Union requires ESD immunity testing for all
electronic products as a condition for EMC Mark before
shipping to any member countries. This is not a IC require-
ment but an overall system requirement. IEC 1000-4-2
specifies ESD testing both by contact and air-gap discharge.
ESD testing by contact are generally more repeatable than
air-gap but is less realistic to actual ESD event. However,
air-gap discharge is more realistic but ESD results may vary
widely dependent on environmental conditions (temperature,
humidity,....) The waveform is obtained by discharging
150pF capacitor through a resistor, R2 = 330. A typical
peak current may be high as 37A with 10kV.
FIGURE 3. MM ESD Model
20048004
FIGURE 5. IEC ESD Model
20048004
FIGURE 4. MM Waveform
20048007
FIGURE 6. IEC Waveform
20048009
www.national.com
6
Direct download click here

 

Share Link : 
All Rights Reserved© datasheetq.com 2015 - 2020  ] [ Privacy Policy ] [ Request Datasheet  ] [ Contact Us ]