AMC23C12-Q1: About Latch Mode

Hi Shoji,

LATCH can be brought up with the VDD2 supply as long as it does not exceed VDD2 + 500mV.

Hello Ezaka,

Happy to help! 

What kind of application is this for and how is the device going to be used? 

If pulling LATCH high, it can be brought up with the VDD2 supply. If pulling LATCH low, it can be kept low. Otherwise the start-up timing characteristics apply:

Hi Ezaka,

If the LATCH pin is set high before VDD2 rises, the device may be damaged as I described in the first post. 

If the device is not damaged, then I would expect the device to operate normally. 

Hi Alexander,

I understood.
The absolute maximum rating of the LATCH pin is determined by VDD2, so I need to set the status after VDD2 is up.

thank you so match!