HD3SS3411: IRWAR

Hi Harish,

Looking into this the intended operation of this device is for the Enable pin to be pulled high (by a pull up resistor) and then toggled Low when the device is needed to be used in a system.( That is the reason there is no enable pin timing specs for this device)

Is there a reason why the enable pin timing is needed?

In addition if the enable pin timing is a requirement for your system would you consider a another 2:1 2 channel device like the TMUX136?

Please let me know what you think and I can assist further

Regards,

Kameron 

Hello 

Thanks for your response 

Enable pin timing is required for my system, like how many ns it will take for muxing after enable is switched from high to low?

Thanks In Advance,

HarshiA. 

Hello HarshiA,

It looks as if this data for this device is not available and was not taken at the creation of this device.

Would using a device with enable pin timing like the TMUX136 be a option for you?

Hello,

I referred TMUX136 , we need switching and enable pin timing as low as possible (<5ns), I want same configuration as part (HD3SS3411IRWAR Mux/Demux) as switching time for this is 0.5ns(much fast) but for this enable pin timing is not there so I want to move to some switch which is having less switching and enable pin timimg with 1:4 configuration.

Can you suggest some switch with the above characteristics 

Thanks,

HarshiA.

Hi,

Understood and actually I would like to take a step back and look at the HD3SS3411

We do not have the enable pin timing for this device.

In addition we do not have a 4:1 version of the HD3SS3411 but if you would like to create a 4:1  using 2x HD3SS3411 that is fine.

To do this you will need to combine the Ap, and An pins of both devices to create a 4:1 configuration.( Please let me know if this is what you are looking for)

If this is the case then a good idea here might be to test the HD3SS3411 and see what its enable timing is for this device

With that information you could send your Logic  enable Low signal  before you need your entire actual system to turn on and you logic enable High signal before you need your entire system to turn off.

So for example  if you need your entire system to turn on in 50ns and the enable on time for the multiplexer based on your testing is 5ns then you would simply need to send your enable high at the 45ns mark in your system turn on sequence.

At 45ns you send the Logic Low signal to your enable pin and at 50ns your multiplexer and rest of your system would be "turned on" and ready for operation

Please let me know what you think here

Regards,

Kameorn

Hello,

Using 2xHD3SS3411 is fine to get 4:1 version but the reason to migrate from this to another switch is not only for 4:1 configuration but also we want less enable pin timing, when we checked from our side (we used this mux for termination, if enable pin is Low, it should terminate if High it should be unterminated) we found enable time is more than ~300ns, this is not we really require , we want a part same as HD3SS3411 in all aspects but with very less enable pin timing(<5ns). Can you suggest some switch to meet our requirements.

PFA of enable pin timing from our side.

I hope this switch with this much enable pin timing is not suitable for our application, so we are looking for an alternate part with select switching time and enable pin timing is <5ns (best case) or slightly higher than that, Please suggest any part to meet our requirements.

Thanks,HarshiA 

Hello

Thank you for your valuable suggestion ,I will definitely go through website which you provided and will check for enable pin timing in the datasheet

We can't use TMUX136(already referred this datasheet and replied you back)as it's enable pin timing is much more,(as we need few ns, but it is some micro seconds)if we can get a mux with atleast 15ns for both enable pin timing and select line switching that's much good for us to use in our system.

Can you please let me know if we can get a mux with enable pin timing and select pin switching 15ns

Hi

Thanks for letting me know about why you cannot use the TMUX136 and now I understand that clearly.( Sorry about the confusion)

Do you need a multiplexer with high bandwidth/ can support fast frequencies  GHz range?

If yes I would  recommended looking through the product page i sent you but we  likely do not have multiplexers with the 15ns enable time

If not there is the TMUX1104 or TMUX1109 which has enable pin timing around 15ns.

Are you passing high frequency signals through the multiplexer?

Regards,

Kameron