Datasheet

V
CC
GND
= VIA to GND
IO2
IO1
TPD2E001
SLLS684H –JULY 2006–REVISED AUGUST 2014 www.ti.com
9 Power Supply Recommendations
This device is a passive ESD protection device and there is no need to power it. Care should be taken to make
sure that the maximum voltage specifications for each line are not violated.
10 Layout
10.1 Layout Guidelines
• The optimum placement is as close to the connector as possible.
– EMI during an ESD event can couple from the trace being struck to other nearby unprotected traces,
resulting in early system failures.
– The PCB designer needs to minimize the possibility of EMI coupling by keeping any unprotected traces
away from the protected traces which are between the TVS and the connector.
• Route the protected traces as straight as possible.
• Eliminate any sharp corners on the protected traces between the TVS and the connector by using rounded
corners with the largest radii possible.
– Electric fields tend to build up on corners, increasing EMI coupling.
10.2 Layout Example
This application is typical of a differential data pair application, such a USB 2.0.
Figure 6. Routing with DRL Package
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