• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 32 subscribers
  • Views 334 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.

Original question:

SN65HVD234 / Transient Overvoltage Test

SN65HVD234: SN65HVD234

Sadat Miah
Prodigy 30 points
Part Number: SN65HVD234
Other Parts Discussed in Thread: TCAN334,

Hi Michael,

Having read the post and datasheet for the CAN Transceiver SN65HVD234DR, operating @3.3V, my question - Does this device has dominant time-out (DTO) protection on the output lines?. My application requires to meet ARINC825 for Airborne use. . 

If not do you have suggestion for pin to pin compatible Transceiver (8 pin SOIC) please.

Thanks

Sadat 

  • 0
    TI__Guru 62910 points
    Hello Sadat,

    A dominant time-out is not featured in SN65HVD234, unfortunately. An alternative device you could consider for 3.3-V operation is TCAN334. Note, though, that this device is a little more restrictive in the absolute maximum voltage range supported on the CANH/CANL lines. I'm not sure whether this could be problematic for ARINC 825 implementations. If a 5-V rail is available, TCAN1042V would be another option. (That device could interface with 3.3-V logic if 3.3 V were applied to the "VIO" terminal, but 5 V is still required on the "VCC" terminal.)

    Best regards,
    Max
  • 0 in reply to Miguel Robertson
    Prodigy 30 points

    Thanks Max,

    Could you please clarify why the TCAN334 has a much lower Bus Pin Fault Protection of +/-14V. This is quite low for TVS clamp voltage.

    At this stage I am considering only 3V3. 

    Thanks

    Sadat

  • 0 in reply to Sadat Miah
    TI__Guru 62910 points
    Sadat,

    Sorry for the delay while I was out of office. The lower voltage range was a trade-off made in order to allow for smaller overall size (since this product comes in a SOT-23 package variant) while still maintaining high transient immunity levels (specifically IEC 61000-4-2 ESD protection).

    Max