TXB0108

Hello Tan,
Lets get a bit more information before I recommend a good solution. Do you need bidirectional translation? directional? Auto-directional? Are your devices push-pull or open drain? What data rates are you hoping to achieve? Do you need pull-ups or pull-downs on any of the signals? If so, what resistances are needed? Can you draw a schematic to show what you want to do. It can be hand drawn even, just post the picture. I look forward to helping you out.
-Francis Houde

Hi Francis,

I am new to this forum, I haven't figure out how to attach the drawing, I will try to explain as clearly as I can.

The CPU memory IO interface is 1.8V on both the address and data bus,
(1) The address bus is connected directly to the two NOR flash and then to a 74lvc16T245 to step up to 3.3V then connects to one SRAM and one NAND flash. I have no issue with this.
(2) The bidirectional data bus is connected directly to the NOR flash and then to a the TXB0108 to step up to 3.3V then connects to the SRAM and NAND flash. On the TXB0108, the 1.8V side is connected to the CPU and two NOR, on the 3.3V side is connected to the SRAM and NAND.

The data bus is push-pull and I don't need any pull-up. The data rate is 50MHz.

I hope the above explanation is clear and thanks for helping.

Tan

Hello Tan,

Thanks for the information.  I will review and get back to you shortly. 

In order to insert a picture into the post you need to use the "Use rich formatting" button.  Once in rich formatting mode you can select the "insert file" button to insert a previously saved image into the post.  Just go browse for the file and select it the "Insert" button.  I have attached images of these pages for your reference.  Looking forward to seeing images :)

-Francis Houde

Hello Tan,
I agree that for this application it looks like the TXB0108 would be a great choice. I would like to see a schematic if you can send it so that I can review it to make sure I don't see any problems with it.
-Francis Houde