ISP1540/1

Ignacio Linares

Expert 1655 points

Other Parts Discussed in Thread: ISO1540

My customer wants to know if this configuration will work - see attachment.

ISO1540-1.docx

over 10 years ago

0 Kannan Soundarapandian over 10 years ago

TI__Prodigy 20 points

Ignacio,

We're looking into this and will get back to you shortly.

0 SaranganValavan over 10 years ago in reply to Kannan Soundarapandian

TI__Intellectual 1815 points

Ignacio,

I don't see any issue with the configuration you have shown.Only point to take care is the that total capacitance on 12 inch cannot be more than 40pF. If this is more then the maximum speed of operation will be proportionally lower.

Regards,

Sarangan Valavan

0 James Lockridge19 over 10 years ago in reply to SaranganValavan

TI__Genius 14485 points

Sarangan,

In relation to this question, what are the concerns in using the configuration below with two ISO1540 devices, where side 2 of both isolation devices is connected to the cable? Since side 2 can drive 400 pf, this configuration should be able to work bidirectionally, correct? Would there be any issues with side 2 of one device driving side 2 of the other device?

0 Anant Kamath over 10 years ago in reply to James Lockridge19

TI__Intellectual 2200 points

Hi James,

I don't see any issues with this configuration. Side2 of ISO1540 is completely I2C compliant. Side 2 of one device can drive Side 2 of another.

Rgds,

Anant

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ISP1540/1