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TXB0304: QSPI translation - TXB0304 and propagation delay

Part Number: TXB0304
Other Parts Discussed in Thread: TXB0302, TXB0106

Tool/software:

Hello,

In our design, we need to perform level translation on a QSPI signals between an FPGA (1.2V) and QSPI Nand Flash (1.8V).

We would like to optimize the bandwidth on this bus.

We plan to use TXB0304 for data lines, and TXB0302 or one other TXB0304 for clock & CS# lines.

The main concern we have is about propagation delay on these parts.

The DS give typical and maximum values with a delta of 4ns between typ and max for TXB0304, 8ns for TXB0302.

TXB0304:

TXB0302:

We see that these values are given over the operating temperature range. We would like to know by how much this propagation delay difference is reduced between two parts units (2x TXB0302) on the same board, applying the same conditions (temperature, VCCA & VCCB).

For example: if we use 2x TXB0304 (1 for data, 1 for CLK/CS#), we want to avoid having too much propagation delay variation between data & clock on different boards. 

If you have some details or curves about propagation delay vs voltage&temperature, could you please share it ?

Thanks.

Regards,

Alexandre.