On table 2, page 6 of the datasheet for the ST VN5E160MS-E Single-channel high-side driver the manufacturer provides guidance on what to do with unused pins on the IC package.

Instead of a text instruction, some items are marked with an 'X' which seems to be undefined in the datasheet.

'Suggested connections for unused and not connected pins' Screenshot

Looking at the CS_DIS pin, for example, is the manufacturer suggesting that the pin (if not used) is able to be left floating or to be placed 'Through [sic] 10 kΩ resistor' to ground?

Or, are they suggesting that leaving it floating is an invalid option?


1 Answer 1


In this case, the table is for "what you can or cannot do with the pins", it answers the question "Can you leave them floating, or can you ground them?".

The table marks each valid combination with an X, meaning for example Yes, you can leave the output pin floating. But you cannot leave the Current sense-pin floating (because it says Not allowed" in that box).

  • 2
    \$\begingroup\$ Admittedly, a tick would be clearer than an X... \$\endgroup\$
    – user16324
    Commented Jan 31, 2022 at 14:20
  • \$\begingroup\$ I find it odd that the table implies that an “N. C.” (Presumably “no connection”) pin can be grounded, especially since the package has no N. C. pins. \$\endgroup\$
    – DoxyLover
    Commented Feb 1, 2022 at 6:52
  • \$\begingroup\$ @DoxyLover That is indeed strange. A datasheet specifying that NC pinc can be grounded is nothing wrong, but since there is none it is rather strange. Must be some copy/paste error that no one has fixed it in the 13 years the datasheet has existed. \$\endgroup\$
    – Klas-Kenny
    Commented Feb 1, 2022 at 7:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.