TXB0104: TXS0104 vs TXB0104: Push-Pull versus Open-Drain Support furthr question (other thread locked)

David Guest1

Part Number: TXB0104
Other Parts Discussed in Thread: TXS0104E, LSF0204

Would this device work ok as I2C buffer if we use a 1K pullup on the I"C bus - as this will dominate over the 4K pulldown ?

over 1 year ago

0 Michael Ikwuyum over 1 year ago

TI__Mastermind 33765 points

Hi David,

The device will not work best for I2C (open-drain) as it supports mainly push-pull.

Please see the LSF or TXS family (LSF0204 or TXS0104E) for I2C applications, thanks.

Best Regards,

Michael.

0 David Guest1 over 1 year ago

Intellectual 340 points

Thanks for your reply.

As I want to use the same device for SPI memory buffer and I2C, the TXS104 would be OK?. I realise it has higher thresholds, the SPI wouldnt be running past 1MHZ

+1 Clemens Ladisch over 1 year ago in reply to David Guest1

Guru 282680 points

Yes, the TXS can be used for SPI. (The TXS has internal pull-up resistors, so you cannot use external pull-down resistors.)

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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TXB0104: TXS0104 vs TXB0104: Push-Pull versus Open-Drain Support furthr question (other thread locked)