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SN65HVDA1040AQDRQ1 - Abosulted MAX Ratings about CANH, CANL

Hirotaka Matsumoto
Guru 27525 points
Other Parts Discussed in Thread: SN65HVDA1040A-Q1

Hi all

Would you mind if we ask SN65HVDA1040A-Q1?

Please refer to the following file which shows our questions.
We have to huryy to reply to our customer,  we guess that your days are so busy.
However we will really appreciate, if you reply quickly.
0882.20150319_SN65HVDA1040AQDRQ1.pdf

Kind regards,

Hirotaka Matsumoto

  • 0
    TI__Guru 62910 points
    Matsumoto-san,

    I think that I answered this same question already. Can you please take a look at this thread?

    e2e.ti.com/.../409702

    Please let me know if you need any more information.

    Regards,
    Max
  • 0 in reply to Max Robertson
    Guru 27525 points

    Max san,

    When we open URL-link e2e.ti.com/.../409702, the following messages show.
    That'why, we made a new distribution.

    "Access Denined
     You do not have permission to view/download this item."


    Could you let us know what it causes?
    So, could you copy the reply on this contribution.

    Kind regards,

    Hirotaka Matsumoto

  • 0 in reply to Hirotaka Matsumoto
    TI__Guru 62910 points
    Matsumoto-san,

    I'm sorry, there must be some issue with the forum right now. I've copied the original response below.

    ________

    Hello Matsumoto-san,

    Spec item 1.2 refers to continuous voltages, not transients. DC voltages within this range will not cause immediate damage to the the device, although overall lifetime may be reduced if the device is operated under these limit conditions for extended periods. Item 1.4 refers to short-duration transient events. For these, a higher voltage level can be tolerated because the duration is shorter. That spec item specifically refers to the transient waveforms defined by ISO 7637 (test pulses 1, 2, 3a, and 3b).

    Please let me know if you have any questions.

    Max
  • 0 in reply to Max Robertson
    Guru 27525 points

    Max san,

    Thank you for your prompt reply.

    We have two additional questions.

    <Q1>
    You mentioned Spec item 1.2 refers to continuous voltages, not transients.
    So, how long of transients period can the device eudure?
    Or, how long can the device use under the condition which is limit over?
    Of cource, we recommend that our customer use within spec item 1.2.

    <Q2>
    About ISO7637 test pulses 1, 2, 3a and 3b, if you know how long of a period each pulses are,
    could you let us know these?
    Our recognition is followings, so are these correct?
    -ISO7637 test pulses 1: pulse period 2ms
    -ISO7637 test pulses 2(a): pulse period 50us±10us
    -ISO7637 test pulses 3a/3b: 150ns±45ns

    Kind regards,

    Hirotaka Matsumoto

  • 0 in reply to Hirotaka Matsumoto
    TI__Expert 5400 points

    Matsumoto-san,

    As Max mentioned, Spec item 1.2 addresses DC voltages, so there is no information regarding transients beyond these specifications.  The transient information is given in Spec item 1.4.

    Regarding ISO7637, the pulse durations are as follows:

    • Pulse 1: 2ms
    • Pulse 2(a): 50us
    • Pulse 3(a) & (b): 100ns

  • 0 in reply to Bart Stiller
    Guru 27525 points

    Bart san,

    Thank you for your prompt reply!
    OK, we got these exactly.

    Kind regards,

    Hirotaka Matsumoto