RE: Unpowered Bus Drivers

I checked with our “Industrial Interface” group and they had this to say: “All the newer transceivers are able to do this. There is a spec in the datasheets that is Unpowered Bus Leakage and it is limited to 10µA in the standard now. Our latest TCAN1042/1051 devices have a max of 4.8µA”

Hareesh Janakiraman
Texas Instruments Inc


-----Original Message-----
From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Heinz-Jürgen Oertel
Sent: Thursday, April 28, 2016 4:59 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: [CANLIST] Unpowered Bus Drivers



Hi John







Am Mittwoch, 27. April 2016, 22:45:51 schrieb John Dammeyer:

> Hi all,

> Does anyone have a list of which CAN bus drivers can be unpowered on a

> CAN bus without impacting the network?  As I understand it some of the

> earlier drivers like the P82C250 should not be powered down.  There

> are some TI devices that are designed to handle this.

>

> Any information would be helpful.





Yes, as far as I know TI has such devices, remember Steve Corrigan. And TI has a very good reputation regarding CAN transceivers. But I don't have a part number for you.

May be it is worth adding this attribute as a flag to the CAN transceiver collection at the CAN Wiki. But again, there are too many properties of interest, that at the end you need to publish the data sheet.

. operating voltage

- power consumption

- power off behavior

- propagation delay

- max speed

- low power feature

- housing

- EMI

- ...

and much more. The Wiki as it is can not offer a complete comparison, but only give an overview on manufacturers where to look at.



Heinz









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