TMUX7221: What switch do you recommend for USB 2.0 and RS-232 signals?

Adam Torma

Mastermind 45370 points

Part Number: TMUX7221
Other Parts Discussed in Thread: TMUX6221

e2e,

Would you please recommend a device that can switch between USB2.0 and RS-232?

Looking for something with low capacitance (below 10pF) and low Rdson (below 10ohm) with break-before-make circuitry.

Thank you,

Adam

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 265760 points

You need a switch that can handle the signal voltages. Is that RS-232 signal an actual RS-232 signal (±15 V) or just a logic-level UART signal?

0 Alex Vish over 1 year ago in reply to Clemens Ladisch

TI__Genius 10552 points

Hi Adam,

Can the customer confirm the voltage levels being used? Once we have this info then we just need to choose a device that can handle the voltage ranges being used and see if any of those match the specs being requested for Con and Ron as well as break-before-make.

Thanks!

Alex