TVS diode question..

[MarkS]

The project I'm working on will require 6 TVS diode chips, in particular, the USBLC6. The issue is that I have an odd number of signals. I have two from a USB connector, six from a microSD card and three from a SW debug connector. Is it acceptable to leave one input/output on the TVS floating? The datasheet doesn't mention this. I guess a single TVS diode would work best in this case, but I'm curious.

[Benta]

No problem at all. It's just Zener diodes.

[MarkS]

No problem at all. It's just Zener diodes.

Thank you! I figured, but wasn't sure and there's no point in implementing ESD protection only to sabotage it through ignorance.

[T3sl4co1l]

You can also double up on pins, when it's convenient.  For example, routing USB through pins 1-6 and 3-4 to improve clamping just a little bit.  (The USBLC6 is basically made this way by design, but there are 4-independent-channel types out there too.)  Downside is it increases capacitance, so don't do it anywhere you need maximum bandwidth, or where you'd rather have symmetry (one pin per signal).

Tim