PESD2CAN NXP Semiconductors, PESD2CAN Datasheet - Page 7

• Manufacturer Part Number: PESD2CAN
• Description: PESD2CAN in a small SOT23 Surface-Mounted Device (SMD) plastic package designedto protect two automotive Controller Area Network (CAN) bus lines from the damagecaused by ElectroStatic Discharge (ESD) and other transients
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Application information
PESD2CAN_1
Product data sheet
The PESD2CAN is designed for the protection of two automotive CAN bus lines from the
damage caused by ESD and surge pulses. The PESD2CAN can be used for both,
high-speed CAN bus and fault-tolerant CAN bus protection. The PESD2CAN provides a
surge capability of up to 230 W per line for an 8/20 s waveform.
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 PESD2CAN as close to the input terminal or connector as possible.
2. The path length between the PESD2CAN and the protected line should be minimized.
3. Keep parallel signal paths to a minimum.
4. Avoid running protection conductors in parallel with unprotected conductors.
5. Minimize all Printed-Circuit Board (PCB) conductive loops including power and
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
Fig 10. Typical application: ESD protection of two automotive CAN bus lines
ground loops.
vias.
TRANSCEIVER
Rev. 01 — 22 December 2006
CAN BUS
CANH
SPLIT
CANL
mode choke
(optional)
Common
C G
R T/2
R T/2
2
CAN bus ESD protection diode
3
1
PESD2CAN
006aaa942
PESD2CAN
CAN
bus
© NXP B.V. 2006. All rights reserved.
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