TCAN1044V-Q1: Test condition of I/O supply current in normal mode

Isao Takigasaki

Part Number: TCAN1044V-Q1

Hi,

This question is related to the following external E2E thread.
https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1089413/tcan1044v-q1-i-o-supply-current-in-standby-mode

In the datasheet of TCAN1044V-Q1, I/O supply current in Normal mode for both case of Dominant and Recessive as shown in below.

In this table, should the description of "TXD=0V" in test condition be "TXD=Vio" in recessive case?
If so, could you revise the datasheet with checking the datasheets of other devices in TCAN1044 family?

Best Regards, Taki

over 3 years ago

0 Eric Schott1 over 3 years ago

TI__Guru 53575 points

Hi Taki-san,

Good catch. I'll need to check what the actual conditions were for this testing. It's possible a special configuration was used for the device where the IO state does not directly impact the CAN driver state (such as TXD holding low for t > tDTO). This might allow for some worst-case measurements, but again I will have to check to be sure. I will get back to you on this tomorrow at the latest.

Regards,
Eric Schott

0 Eric Schott1 over 3 years ago in reply to Eric Schott1

TI__Guru 53575 points

Hi Taki-san,

It looks like this was simply a typo in the datasheet. Iio_Recessive testing is done with TXD = Vio. We will correct this in the next datasheet revision.

Regards,
Eric Schott

+1 Isao Takigasaki over 3 years ago in reply to Eric Schott1

TI__Expert 3360 points

Hi Eric-san,
Thank you for making the plan to revise the datasheet.

The following excel shows the list of document number which has the typo. I'm glad to help you identify the devices which should be revised.

Typo_TCAN1044xxx.xlsx

Best Regards, Taki

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TCAN1044V-Q1: Test condition of I/O supply current in normal mode