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[FAQ] How can I estimate Data Rate Frequency not given for my voltage level?

Michael Ikwuyum
Mastermind 28070 points
Other Parts Discussed in Thread: TXV0108-Q1

FAQ: Logic and Voltage Translation >  Fixed DIR / DIR CNTRL Level-Shifters >> Current FAQ

Data rate depends on the system designers tolerance for various parameters such as VOL / VOH levels, duty cycle distortion, etc., and will generally need to be tested in the specific application environment for the clearest understanding of signal integrity. The recommendation is always to verify with the device's EVM per the system/loading requirements, for what is acceptable.

As a lower estimate, the specified datasheet's propagation delay (tpd) may be used to estimate data rates not given for interested voltage levels.

                                                                                                      

For example, the above tpd for 3.1 ns indicates (1 / 3.1 ns) = 323 Mbps for TXV0108-Q1 1.8 V to 3.3 V. Hence, 323 Mbps is a safe lower estimate to reference as the datasheet specifies up to 500 Mbps.