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Original question:

TUSB1004: TUSB1004 I2C Rise Time/Bus Capacitance Specification

TUSB564: Question About TUSB564 I2C Timing Parameters Below 100 kHz

Ryota Nagai
Prodigy 20 points

Part Number: TUSB564

Hello TI Support Team.

I have a question regarding the I2C timing parameters of the TUSB564.

The datasheet only specifies I2C timing parameters up to 1 MHz, and these values appear to correspond to those defined for I2C Fast-mode Plus.

If the device is intended to operate at frequencies below 100 kHz, should we refer to the Standard-mode timing requirements defined in the I2C specification?

More generally, for this device and other TI products, if I2C timing parameters are not explicitly specified in the datasheet, is it appropriate to use the values defined in the official I2C specification as the reference?

Could you please confirm whether this interpretation is correct?

  • +1
    TI__Guru 60486 points

    Hi,

    Ryota Nagai said:
    More generally, for this device and other TI products, if I2C timing parameters are not explicitly specified in the datasheet, is it appropriate to use the values defined in the official I2C specification as the reference?

    Yes, the TUSB564 support 1MHz and all I2C speeds below.

    For 100KHz standard I2C mode operation, the timing requirements defined in the I2C spec ar appropriate.