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ESDS312, ESDS314

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SLVSEG9B – MAY 2018 – REVISED SEPTEMBER 2018

Product Folder Links: ESDS312 ESDS314

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Copyright © 2018, Texas Instruments Incorporated

9 Power Supply Recommendations

The ESDS314, ESDS312 devices are passive ESD devices and there is no need to power it. Take care not to

violate the recommended I/O specification (0 V to 3.6 V) to ensure the device functions properly.

10 Layout

10.1 Layout Guidelines

•

The optimum placement is as close to the connector as possible.

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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 must 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.

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Electric fields tend to build up on corners, increasing EMI coupling.

10.2 Layout Example

Figure 15. Layout Example for 4-channel Device