TRS3227E: Rout state in FORCEOFF

Jon Torgeir Honne

Part Number: TRS3227E

Hi. I am planning to connect two TRS3227E in parallel and use FORCEOFF to disable one in a multiplexing scheme. For this to work, the CMOS side must be in a high impedance state. What is the impedance of the Rout CMOS output pin when the device is forced off (FORCEOFF=0)?

1 month ago

0 Ethan Sempsrott 1 month ago

TI__Mastermind 27342 points

Hi Jon,

Thanks for reaching out on E2E.

It should be high-impedance, but let me double check and get back to you.

Best,

Ethan

+1 Ethan Sempsrott 1 month ago in reply to Ethan Sempsrott

TI__Mastermind 27342 points

Jon,

I wasn't able to get an exact confirmation, but my colleagues agree it should be high impedance. Our other RS-232 transceivers specifically call out that ROUT will be high impedance when Forceoff=low, and there would be no reason for this device to be different. So you should be fine to connect two ROUT pins together.

Best,

Ethan

0 Jon Torgeir Honne 1 month ago in reply to Ethan Sempsrott

Prodigy 10 points

Thanks Ethan, I'll go with that.

Cheers,

Jon

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TRS3227E: Rout state in FORCEOFF