TS3A27518E: TS3A27518E SPI maximum data transfer rate

Hi Reagan,

Thank you very much for your question & interest in muxes!

To start, I want to let you know that we have a video training series to learn more about features, parameters, and characteristics of switches & muxes. We even have a video specific to SPI applications called How to select the right signal switch for SPI applications. 

How to find the maximum data rate for a switch is a Frequently Asked Question (FAQ) that you can find on our forum homepage.

The best way to figure out the maximum signal rate or data rate is to estimate based on bandwidth. To calculate the maximum data rate the bandwidth can support you can use the theoretical formula DataRate = 2xBandwidth. 

The bandwidth specification for TS3A27518E is 240 MHz, so the theoretical data rate that this switch may support is 480 Mbps.  

In practice we recommend selecting switches with more bandwidth than what is theoretically required for a particular data rate to account for system losses that occur on PCB traces etc. The rough formula we use to select switches is Bandwidth = (3/2)xDataRate which will provide sufficient margin. 

Please let me know if you have any additional questions.

Best regards,
Kate