SN65HVD72: SN65HVD72D

Sunil Bhattad

Part Number: SN65HVD72

Tool/software:

Hello Team,

I am using SN65HVD72D IC for Modbus communication. I wanted to check do we need Common mode choke & filter circuitry for the differential pair of lines?

Thanks & Regards

Sunil Bhattad

10 months ago

0 Clemens Ladisch 10 months ago

Guru 316510 points

This depends on what kind of noise you expect.

In general, you are using Modbus in less-than-perfect environments, so you should design them in, at least as an option.

0 Ethan Sempsrott 10 months ago

TI__Genius 13322 points

Hi Sunil,

Typically CMCs are not used with RS-485. Filtering capacitors are used but only when high levels of noise are anticipated. What environment will the SN65HVD72D be operating in? What kind of noise are you expecting?

Best,

Ethan

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SN65HVD72: SN65HVD72D