To whom it may concern
Our customer's system is required hot swap function.
Against digital input unit, they are considering SN65HVS885 but they have concerned about protection if input voltage was minus at hot swap timing.
Are there any proposal about the above ?
Your reply would be appreciated.
Thanks and best regards.
Hello,
Unfortunately, we do not have a De/Serializer with built in hot swap timing.
However you can take a series of 1:1 switches and place them at the input pins as a form of isolation such as the SN74CB3Q3345 (8 Ch. 1:1 switch if power off isolation).
You could have the switches off during plug in, and then after the timing for hot swap, enable the switches as shorts to allow the signals to go through.
Please see the app note below for more details:
Thank you,
Louie
