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TCAN1042-Q1: CANH, CANL, tolerence

Jin-Suk Choi
Intellectual 1650 points
Part Number: TCAN1042-Q1

Hi~

Customer want to check TCAN1042-Q1 below spec, but couldn't find in datasheet exactly.

1) CANH, CANL, input voltage tolerence   (required spec : min 0.9, typ 2.0, max 5.0V,   Rt=60ohm)

-> min , typ, max 

2) CANH, CANL differential output slew rate (required spec : min 20, max 40V/uS, Rt=60ohm, C-50pF)

-> min, max

Would you please check above those spec?

  • 0
    TI__Intellectual 2090 points

    Hi Jin-Suk,

    1) The TCAN1042 transceiver is fully compliant with the ISO11898-2:2016 automotive CAN standard, which sets the Dominant state differential input voltage range from 0.9V to 8.0V.  Although we do not spike this specification out specifically in this way in the datasheet, the device compliance to this standard.

    2) We only specify a typical value differential rise and fall time with a 60 Ohm, 100 pF load.  I know this doesn't match your request exactly, but the slew rate computes out to a typical value of 35.6 V/us.  

    Can you clarify what is driving the slew rate limits for the customer?  Sometimes we see customers restrict their slew rate limits in order to constrain EMC performance at certain operational speeds.  But the TCAN1042 device possesses excellent EMC performance, even at CAN FD data rates.  So I am just curious to see the reasoning behind the customer's specification.

    Thanks,

    Max Megee

    TI Transceiver Applications