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NXP Semiconductors
PESDxV4UK series
Very low capacitance unidirectional quadruple ESD protection arrays
7. Application information
The PESDxV4UK series is designed for the protection of up to four unidirectional data or
signal lines from the damage caused by ESD and surge pulses. The devices may be used
on lines where the signal polarities are either positive or negative with respect to ground.
The PESD3V3V4UK and the PESD5V0V4UK provide a surge capability of 25 W per line
and the PESD9V0V4UK provides a surge capability of 28 W per line for an 8/20 μ s
waveform.
data
lines
PESDxV4UK
PESDxV4UK
1
2
3
6
5 n.c.
4
1
n.c. 2
3
6
5 n.c.
4
unidirectional protection of 4 lines
bidirectional protection of 3 lines
006aac384
Fig 10. Application diagram
Circuit board layout and protection device placement
Circuit board layout is critical for the suppression of ESD, Electrical Fast Transient (EFT)
and surge transients. The following guidelines are recommended:
1. Place the device as close to the input terminal or connector as possible.
2. The path length between the device and the protected line should be minimized.
3. Keep parallel signal paths to a minimum.
4. Avoid running protected conductors in parallel with unprotected conductors.
5. Minimize all Printed-Circuit Board (PCB) conductive loops including power and
ground loops.
6. Minimize the length of the transient return path to ground.
7. Avoid using shared transient return paths to a common ground point.
8. Ground planes should be used whenever possible. For multilayer PCBs, use ground
vias.
8. Test information
8.1 Quality information
This product has been qualified in accordance with the Automotive Electronics Council
(AEC) standard Q101 - Stress test qualification for discrete semiconductors , and is
suitable for use in automotive applications.
PESDXV4UK_SER
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 25 August 2010
? NXP B.V. 2010. All rights reserved.
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