Other Parts Discussed in Thread: TMUX1309-Q1, TS5A23157-Q1, SN74LVC2G17, SN74LVC1G08, TS3USB221A-Q1
Find a URAT MUX,One Chanel URAT is converted to two outputs, 2chanel,2:1MUX,automotive application
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Find a URAT MUX,One Chanel URAT is converted to two outputs, 2chanel,2:1MUX,automotive application
UART signals are slow, so you do not need to care about bandwidth. There are two automotive, 2-channel, 2:1 switches, but a device with more channels will be cheaper and is available in a smaller package: ti.com/switches-multiplexers/analog/products.html#480=2;3;4&1143=2:1 SPDT;4:1&1498=Automotive
The TMUX4052-Q1 will work, but requires at least 5 V. The TMUX1309-Q1 is optimized for lower voltages.
Hello Zhang,
To add to what Clemens said I think you want a 2:1 2 channel uart mux( which is also the picture you provided). A good choice for this is the TS5A23157-Q1.I It can be used in the exact way you are asking which is by connecting a 1 channel uart device and allowing it to speak to two other uart devices.
Here is an FAQ that talks about uart muxes in greater detail.
Please let me know if you have additional questions.
Regards,
Kameron
Thanks for your recommendation, I think maybe some misunderstanding between us, all the switch we found now just can do switch function, that means input Uart signal can be transfer to output UartA/UartB, but not both UartA&UartB at one time. while we need an IC can split one UART to two UARTs simultaneously, the input UART signal can transfer to the two output UARTs at the same time, So could you help with this case ?
Creating two outputs from one input can be done with any two-channel buffer (e.g., SN74LVC2G17/34).
But what should happen when both devices at the right are transmitting at the same time? If you say that this does not happen, then you can use an AND gate (e.g., SN74LVC1G08) to combine the signals.
Hello Zhang,
I understand what you are asking for and based on Clemens suggestion I will move this forum to the logic team to confirm the solution Clemens offered.
Regards,
Kameron
Hi,
The 2ch buffer solution should work fine for splitting one input into two outputs.
Best,
Malcolm