TCA9511A: Alternative supporting up to 1MHz

Hailiang Zhang

Part Number: TCA9511A
Other Parts Discussed in Thread: TCA9617A, TCA4307

Hi Team,

My customer is looking for a P2P alternative to the TCA9511ADGKR that can support speeds up to 1MHz, could you pls help?

Regards,
Hailiang

7 months ago

+1 Jack Guan 7 months ago

TI__Mastermind 21931 points

Hey Hailiang,

The customer may also see the TCA9617A/B I2C buffer that supports up to 1MHz. It is not directly P2P, but it is footprint compatible.

Regards,

Jack

0 Hailiang Zhang 7 months ago in reply to Jack Guan

TI__Expert 5895 points

Hi Jack，

The customer wants to increase the speed without changing the layout. Any other recommendations?

Regards，
Hailiang

0 Jack Guan 7 months ago in reply to Hailiang Zhang

TI__Mastermind 21931 points

Hey Hailiang,

What is the desired data rate that the customer wants to achieve? The current existing I2C buffers in TI portfolio only support up to 1MHz at the moment.

Regards,

Jack

0 Hailiang Zhang 7 months ago in reply to Jack Guan

TI__Expert 5895 points

Hi Jack，

The data rate is 1MHz, but they need a P2P alternative with TCA9511A.

Regards,
Hailiang

0 Clemens Ladisch 7 months ago in reply to Hailiang Zhang

Guru 265910 points

Most I²C buffers are level shifters with two power supply pins. There is no faster P2P device.

0 Jack Guan 7 months ago in reply to Hailiang Zhang

TI__Mastermind 21931 points

Hey Hailiang,

Unfortunately, the TCA9617A/B will be the only viable solution at this moment. I have taken note of this feedback for future product developments.

Regards,

Jack

0 Hailiang Zhang 7 months ago in reply to Jack Guan

TI__Expert 5895 points

Hi Jack，

It seems that TCA9617A/B does not have hot swap function? The customer needs the hot swap function to protect I2C hot swapping between the two boards. Do you have other suggestions?

Regards,
Hailiang

0 Jack Guan 7 months ago in reply to Hailiang Zhang

TI__Mastermind 21931 points

Hey Hailiang,

Yes that is correct, the TCA9617A/B will not be able to support hot swap applications. The only I2C hot-swap buffers at the moment are the TCA9511A and the TCA4307. However, both these buffers will not be able to support above 400KHz operation.

Regards,

Jack

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TCA9511A: Alternative supporting up to 1MHz