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Tool/software:
Hi, I am using TMUX136 to switch between two UART channels as shown in attached snip.
I got little confused between the simplified schematics and Typical application circuit.
Correct me if I am wrong. As per my understanding,
If EN is High and SEL is Low then:
COM1,COM2 will be connected with A1 and A2 respectively.
If SEL ,EN is High then:
COM1,COM2 will be connected with B1 and B2 respectively.
Hi Madaka,
I think there might be some confusion on how the control logic of this device works.
But for the correct reference please look at this logic table.
Whenever the enable pin is high the device is turned off( hiz) essentially all signal paths are "turned off".
Please let me know if you need any further assistance!
Regards,
Kameron
Hi Madka,
1.I think I might be missing something so can you show me where the schematic control logic is not the same as table 8-1
On Jimmy Lai post this is the control logic on the schematic.
It basically says EN=Low( enabled) and EN=High(disable)
SEL=Low(Com to A port)
SEL=High(Com to B port)
This is the same information in table 8-1
2.So SPDT 2 channels devices are actually the same thing as a DPDT device.( Different people call this configuration by different names) Figure 9-1 was added after the creation of datasheet so that is the reason why our team called it a SPDT 2 channel device instead of DPDT,but those configurations are the same thing.
Please let me know if you need any other assistance and I am happy to help.
Regards,
Kameron
