• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 16 subscribers
  • Views 2413 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TS12A44514 logic high threshold for 12V power supply

Andrej Chukavin
Prodigy 100 points
Other Parts Discussed in Thread: TS12A44514, TLC339

Hi, please help me to aunderstand: watch logic high threshold for TS12A44514 if a use 12 V power supply. Can I use for control 3,3 V logic level? In datasheet on page 4 (table for 12 V power) specified min. 5V high level threshold, but on page 8 specified "about 3 V".

  • 0
    TI__Intellectual 2770 points

    Hello Andrej,

    The guaranteed voltage range over full temperature for the TS12A44514 when using a 12V supply is specified from 5V..V+ on page 4. The paragraph on page 8 is talking about the typical switching voltage of the device.

    If you want to work with the guaranteed minimum voltage for switching you have to use a 5V signal. If you are fine with the typical values you could try a lower voltage. Please be aware that using typical values is always a risk and some thought/experiments should be done before doing this.

    Some people use comparators with an open drain output for similar tasks. I don't know about your specific application, but it might be worth a look if you can use a part like TLC339. 

     

  • 0 in reply to Thomas Gulba
    Prodigy 100 points

    Thank you Thomas. I dare to use TLC339 or simple N-chenal MOSFET (logic level control).