ISO1042-Q1: Can ISO1042-Q1 replace the combination of SN65HVD1040 and ISO7742DWR?

andy lee1

Prodigy 180 points

Part Number: ISO1042-Q1
Other Parts Discussed in Thread: SN65HVD1040, ISO1042

Hello,

Can ISO1042-Q1 replace the combination of SN65HVD1040 and ISO7742DWR?

Will this replacement cause any problem?

Or what are the benefits of using ISO1042-Q1? (A detailed comparison will be good)

Thanks a lot for the replying!

LEE

over 5 years ago

0 Koteshwar Rao over 5 years ago

TI__Guru 55735 points

Hi Lee,

ISO1042-Q1 is our latest isolated CAN transceiver and hence has the best specifications incorporated. ISO1042 can certainly be used in place of SN65HVD1040 and ISO77742. Please allow me to come back to you with a comparison data between ISO1042 & SN65HVD1040. Thanks.

Regards,
Koteshwar Rao

0 andy lee1 over 5 years ago in reply to Koteshwar Rao

Prodigy 180 points

Hi Koteshwar,

Except the higher data rate, reinforced surge protection and the reduction of an ISO IC (more space, lower price), does it have other advantages of using ISO1042?

Thanks for your replying!

LEE

0 Dan Kisling over 5 years ago in reply to andy lee1

TI__Expert 6195 points

Hi Lee,

You have highlighted the main benefits. It also has:

A higher standoff voltage range (+/-70V instead of -27V/+40V).
Larger common mode range (+/-30V instead of +/-12V)
The integration also makes it easier to ensure that your system meets the CAN timing specs.

I did want to point out that unlike the SN65HVD1040, the ISO1042 does not have wakeup / standby functionality or the split rail.

Best regards,

Dan

0 andy lee1 over 5 years ago in reply to Dan Kisling

Prodigy 180 points

Hi Dan:

The data rate of ISO1042 is said can be designed up to 5-Mbps from datasheet, and I would like to ask how to design the data rate? By designing the ICC1?

Thank you very much!

LEE

0 Dan Kisling over 5 years ago in reply to andy lee1

TI__Expert 6195 points

Hi Lee,

There is nothing special that has to be configured to get the ISO1042 to work at 5Mbps. If you give a 5Mbps signal on TX the CAN bus will follow. Icc1 and Icc2 should be designed to handle worst case (bus dominant) for whatever Vcc1 you use.

Best regards,

Dan

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ISO1042-Q1: Can ISO1042-Q1 replace the combination of SN65HVD1040 and ISO7742DWR?