TCA9548A Hot Insertion

NAOKI AOYAMA

Guru 11215 points

Other Parts Discussed in Thread: TCA9548A

Hello,

Our customer uses the TCA9548A, has a question.

It is mentioned 'Supports Hot Insertion' on feature of the datasheet.

But there is no information on another page.

What does it means 'Hot Insertion' ?

He wants to know that function.

Regards,

Naoki Aoyama

over 9 years ago

0 Jonathan Valdez over 9 years ago

TI__Genius 16510 points

Aoyama-san,

"Hot-Insertion' is supported because when the device is powered off, the ports are high impedance, and when the device receives power, all ports are remained in high impedance until a command is sent to connect a channel.

Basically, because the device stays high impedance until told otherwise, it can support hot insertion since it will not let I2C transactions go through the device, which could cause i2c transaction corruption if the insertion were to happen during a transaction.

0 NAOKI AOYAMA over 9 years ago in reply to Jonathan Valdez

Guru 11215 points

Hi Jonathan,
Thank you for your reply.
I will feedback to the customer this information.

Thanks,
Naoki Aoyama

Interface

Interface forum

TCA9548A Hot Insertion