MAX3221E: Part Details

Nachiketh Karanth

Intellectual 560 points

Part Number: MAX3221E
Other Parts Discussed in Thread: TS5A23157, SN74AUP1G08, SN74AHC1G08

Hi,

I needed a RS-232 transceiver having 2 UART IO and 1 RS-232 IO, Does TI have such IC?

Thanks

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 306610 points

No.

To multiplex UARTs between two microcontrollers, use a switch like the TS5A23157.

If both microcontrollers must be active at the same time, connect the transceiver's ROUT pin to both RXDs, and combine both TXD signals with an AND gate like the SN74AHC1G08/SN74AUP1G08 before going to the DIN pin.

0 Eric Hackett over 1 year ago in reply to Clemens Ladisch

TI__Guru 73432 points

Nachiketh,

Can you elaborate more on your application? I believe Clemens is correct, I just want to make sure we're understanding what you are trying to do.

Regards,

Eric Hackett

Interface

Interface forum

MAX3221E: Part Details