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TCAN1051HGV: Why is ICC (5-V Supply current) in Silent mode same as ICC in normal mode (recessive)?

Kazuya Nakai59
Guru 21645 points
Part Number: TCAN1051HGV
Other Parts Discussed in Thread: TCAN1044A-Q1

Tool/software:

Hello guys,

One of my customers is considering using TCAN1051HGV for their new products.

At this moment, they have the following question.
Could you please give me your reply?

Q.
Why is ICC (5-V Supply current) in Silent mode same as ICC in normal mode (recessive)? 
The both ICC are 1.5mA(typ) and 2.5mA(max).

Their thought is that Normal mode(recessive) ICC > Silent mode ICC

Is their thought not correct?

Your reply would be much appreciated.

Best regards,
Kazuya.

  • 0
    TI__Guru 51766 points

    Hi Kazuya,

    Please note that silent mode only disables the dominant transmit driver, while the bias and receive circuits remain powered and shown in tables 8-3 and figure 8-2. Hence, in normal mode with the bus recessive, the driver is already off, so the current consumption is essentially the same. The current mainly increases during dominant drive and mainly decreases with devices such as TCAN1044A-Q1 with the options for  standby / sleep modes for example (you may further compare the ICC, table and figure to see their differences as well), thanks. 

    Best Regards,

    Michael.