• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 46 subscribers
  • Views 209 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.

SN65HVD31DR for RS232

Kumara Bhagavath
Prodigy 90 points
Other Parts Discussed in Thread: MAX3221E, MAX3221, TRSF3221E, MAX3221-EP

Hi,

I am using this RS422 Transceiver for communication link of CAMLINK Interface. However, customer has now realized that communication link is RS232 & not RS422. Is there any pin/footprint compatible (or very close to this part) RS232 transceiver?

Best regards,

Bhagavath

  • 0
    TI__Mastermind 48892 points

    Hi Bhagavath,

    No - RS-422/485 are not going to have devices that are footprint compatible to RS-232 devices. They are very different and have different architectures. 

    What are the requirements of the RS-232 bus in terms of speed (data-rate) and configuration (how many TX and RX channels are needed) 

    Please let me know!

    Best,

    Parker Dodson

  • 0 in reply to Parker Dodson
    Prodigy 90 points

    Hi Parker,

    Thanks for your response. Speed is not a concern & only one RS232 Tx/Rx is needed.

    Best regards,

    Bhagavath

  • +1 in reply to Kumara Bhagavath
    TI__Mastermind 48892 points

    Hi Bhagavath,

    With that being said I do think we have a few options - but I will preface by saying they aren't directly footprint compatible because the RS-232 devices have an integrated charge pump that require 4 external capacitors. In this specific configuration (1T1R) all of our devices have an auto-powerdown function but it can be disabled if unwanted. 

    A few potential options are shown below:

    MAX3221 and MAX3221E (the "E" has enhanced ESD protection - but besides that very similar) - these devices can operate at up to 250kbps data rates.

    TRSF3221E is very similar except it can operate up to 1Mbps 

    All of these devices are available in C (commercial) and I (Industrial) temperature ratings- so 0C to 70C for Commercial and -40C to 85C for industrial. 

    If you require a wider temperature range we do have 1 option in this which is the MAX3221-EP - which is 250kbps and the most expensive option we have (about 3x to 5x as expensive as our other devices due to it being a high reliability device).

    One of these devices should meet the needs - and they all work at 3.3V supply - which is what the original RS-422/485 part was working at. 

    Please let me know if you have any other questions!

    Best,

    Parker Dodson

  • 0 in reply to Parker Dodson
    Prodigy 90 points

    Thanks a lot Parker for your support.

    Best regards,

    Bhagavath