• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 2 answers
  • Subscribers 21 subscribers
  • Views 410 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TXS0108E: multiple devices in series

Gregory Korsounsky
Prodigy 110 points
Part Number: TXS0108E

Hello.

Can two TXS0108E level shifters be connected in series? 

  • 0
    Guru 317000 points

    Yes.

    (The pull-up resistors of both devices will be connected in parallel, so the required drive strength doubles. But 20 kΩ || 20 kΩ = 10 kΩ, which is still a tiny current.)

  • 0
    TI__Guru 62180 points

    Hi Gregory,

    What is the application and what are the system voltage nodes?

    The TXS0108 has smart pullup resistors which change between 4k or 40k depending on the input signal going high or low.

    So, ideally yes, it can be done and as Clemens suggested the parallel combination will be higher; 4kohm || 4kohm. It is definitely higher current as compared to the 20kohm || 20kohm. Note that TXB is not recommended for back to back connection.