Looking for Level Shifter supporting dual voltage 3.3V/2.9V

[kolar]

Looking for a Level shifter to support the following:
1. One side voltage is 3.3. (since I am interfacing with FPGA I am ok i
its 2.5V or 1.8V as well)
2.Other side needs to support both 3.3V/2.9/2.8V and 1.8V
3.200MhZ speed support is required on the IOs.

Any help will be great.
Thanks


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Posted through http://www.FPGARelated.com

 

[rickman]

On Feb 8, 6:03 am, "kolar"
<kamleshrr@n_o_s_p_a_m.n_o_s_p_a_m.gmail.com> wrote:

Looking for a Level shifter to support the following:
1. One side voltage is 3.3. (since I am interfacing with FPGA I am ok if
its 2.5V or 1.8V as well)
2.Other side needs to support both 3.3V/2.9/2.8V and 1.8V
3.200MhZ speed support is required on the IOs.

I'm not sure I understand the requirement. When you say that side B
has to support multiple levels, do you mean depending on what it is
connected to or different inputs need to be individually configured?

If the latter, the solution is simple, use a bank of 1 bit
translators. If the former then you will need to have some way of
setting the level as required. If you use quick switches maybe you
can power them from 2.5 volts, set the FPGA to 2.5 volts and the
resulting voltage levels will work with the standards you are
listing.

3.2 MHz is no problem with quick switches at all. If you are using
the convention of using a period instead of a comma to separate
thousands from hundreds and mean 3.2 GHz, you may be barking up the
wrong tree in general. At 3.2 GHz the entire interface needs to be
specially designed including the traces on the PCB.

Rick

 

[JK]

On Feb 8, 4:03 pm, "kolar"
<kamleshrr@n_o_s_p_a_m.n_o_s_p_a_m.gmail.com> wrote:

Looking for a Level shifter to support the following:
1. One side voltage is 3.3. (since I am interfacing with FPGA I am ok if
its 2.5V or 1.8V as well)
2.Other side needs to support both 3.3V/2.9/2.8V and 1.8V
3.200MhZ speed support is required on the IOs.

Any help will be great.
Thanks

---------------------------------------        
Posted throughhttp://www.FPGARelated.com

Look at Maxim site: http://www.maxim-ic.com/app-notes/index.mvp/id/3007
You can check with other vendors as well.

--
JK