Hi Masa,
You can send the schematic to duynguyen@ti.com
That device marking 3JS seems to indicate the device is the TCA4311, not the TCA4307. This seems to be the 'Missing ACK Errata' displated in section 7.2.4
Are you able to order a sample of…
Part Number: SN74AVC4T245 Other Parts Discussed in Thread: SN74CBTLV16800 , SN74CBT6845C , SN74CBT16811C , SN74CBT16800C , SN74CB3Q6800 , TCA9511A , SN74CB3Q16811 Hello, I understood SN74AVC4T245is not a hot-swappable buffer. My customer is looking for a hot-swappable…
Hi Danilo,
I agree with Clemen's response.
If you have 50 I2C targets downstream, you would need to separate them if you were trying to stay within I2C standard for bus cap limitation. You can use the same TCA980x or TCA9517 to help you seperate the…
Hi Gareth,
As Clemen's pointed out, this seems like the rise time accelerators turning on and experiencing contention, I suspect this is occuring during an ACK. The VoL seen on the line also seem a little high, this could make the rise time accelerators…
Hi Zach,
Here is a scopeshot of the TCA9511A power up sequence. The Blue waveform is Vcc, Purple/pink is EN held low, and Yellow is SDAIN where you can see the pre-charge turns on even while EN is held low.
-Bobby
Part Number: TCA4311A Other Parts Discussed in Thread: TCA9511A , , TCA9803 , TCA9406 Hi Sir,
May I confirm if we have pin to pin part with PCA9512ADP?
https://www.nxp.com/docs/en/data-sheet/PCA9512A.pdf
I checked TCA4311A, TCA9511A but they don't have level…
Hi Andy,
Is there a reason the customer is using TCA4311A over TCA9511A? Can you move them to the TCA9511A?
We don't have an IBIS model for the TCA4311A. The main difference between the two from an IBIS stand point is the pull up strength during rising…
Hi Parker,
Thanks for your prompt reply!
I think I understood the hotswap scheme, please correct if I am wrong.
1. For SN74CBTLV3125, when SN74CBTLV3125 powered off (VDD = 0), its internal switch's enable pin will enter Hi-Z mode. So data transmission through…
Example of external rise-time accelerators are: TCA4307/TCA4311A/TCA9511A/TCA9406/TCA9416 which include internal rise time accelerators in their design but are external to the PCA9515A.
Hi Frank,
The 9545A does not have any kind of protection against bad PoR which is one of the concerns when hot plugging thing into a backplane. A bad poR can cause SDA to get locked and remain locked until the device is reset or the processor can send…