ISO1050 and the NMEA2000

Teodor Neagoe

Other Parts Discussed in Thread: ISO1050, SN65HVD1050

Hello there, here are a couple of quesitons related to ISO1050:

1.) Do you know if we can achieve NMEA2000 certification with the ISO1050?

2.) Do you know of anyone using this transceiver for NMEA2000?

The datasheet does not mention NMEA2000 as an application (although the SN65HVD1050 does, it would still require some sort of isolation stage). It think the ISO1050 meets the NMEA2000 spec for propagation delay, minimum nodes, and data rate. I am not sure if it meets the isolation requirements, the NMEA2000 spec says 100Kohms between and isolated and non-isolated pins.

I really like this IC, it's very cost effective for isolated CAN and has a low implementation part count. I had a quick look online and there is several discussions on using it NMEA2000, I just want to be sure it meets all the NMEA2000 requirements.

Thank-you for your help,

Teodor

over 14 years ago

0 Scott Monroe over 14 years ago

TI__Mastermind 20590 points

Hello Teodor,

TI is not a member of NMEA2000, but based on everthing we know the ISO1050 would meet the CAN requirements for it. The ISO1050 complies with the ISO11898-2 CAN requirements, including timing which takes into account the additinal delays due to the Isolation barrier (and the ISO1050 still easily meets CAN timing).

I'm not sure what you mean by isolation at 100k ohms. The ISO1050 is certified to various WW standards for isolation, such as UL and VDE. Normally these are in working voltage levels and transient voltage levels as stated in the datasheet.

Best Regards, Scott

0 Teodor Neagoe over 14 years ago in reply to Scott Monroe

Intellectual 260 points

Thanks Stoll, well apprecisted your fast answer.

I will communicate to the customer.

Teodor

0 Teodor Neagoe over 14 years ago in reply to Teodor Neagoe

Intellectual 260 points

Scott, sorry I butchered your name :-(

Teodor

Interface

Interface forum

ISO1050 and the NMEA2000