• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 35 subscribers
  • Views 418 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.

MAX3232E: I_OL max receiver

Jan Bock
Expert 3560 points

Part Number: MAX3232E
Other Parts Discussed in Thread: SN74LVC1G34

Hi Team, 

my customer wonders which is max. current can be sinked on the receiver output. 

Here it is stated as a test case that a current of 1.6mA can be sinked at the receiver and the level is raised to max. 0.4V.
However, it is unfortunately nowhere defined how much current the receiver output can max. sink.

Can you help me here?
We should be able to sink at least 6mA for a circuit, is this possible without hesitation?

Thanks 

Jan

  • +1
    Guru 322780 points

    That test condition is the only current for which a voltage drop is guaranteed. Trying to sink 6 mA will probably not damage the device, but the VOL will be higher (about 1.5 V if the output transistor does not saturate, or much more if it does).

    You should add a buffer (e.g., SN74LVC1G34).

  • +1
    TI__Guru 54042 points

    Hi Jan,

    I'd agree with Clemens - we don't actually spec max sinking abilities of these pins - it is just that the output low will be a max of 0.4V when 1.6mA is sunk into the device. Adding a buffer would help clear up ambiguity and guarantee better performance as that much current into the receiver could raise the voltage to an unacceptable level for your application.

    Please let me know if you have any other questions!

    Best,

    Parker Dodson