2024-08-20 08:24 AM
Hi, the STSPIN240 datasheet states that the absolute maximum ratings for logic input voltage should be between -0.3V and 5.5V. However, it is unclear whether the logic input voltage can exceed VS.
Can the logic input voltage exceed VS?
Thanks,
2024-08-20 11:54 AM
No. The data sheet clearly states for the absolute max rating: VIN max 5.5V.
This is the absolute maximum voltage up to which the function of the device is guaranteed. Even the smallest exceedance of this maximum value will result in irreversible damage to the component. It is the developer's responsibility to ensure compliance with these parameters in an appropriate manner.
Hope that answers your question?
Regards
/Peter
2024-08-20 12:55 PM
Hi Peter, thank you for your response.
Yes, I understand and agree with your comment.
However, considering that the STSPIN240 has a supply voltage pin "VS" which can be powered with a voltage ranging from -0.3V to 11V, it is unclear whether the maximum VIN for any logic input could exceed VS without surpassing 5.5V. For instance, if the device is powered by 4V through VS (dc motor power) and the logic inputs are driven by a microcontroller with 5V outputs, it does not exceed the 5.5V maximum rating, but it does exceed VS. Is this permissible?