Solve Multiplexing Conundrum with LS153 Circuit

[Mirek2010]

TL;DR

Stuck with simple LS153 multiplexer circuit

Hello,

I am hoping that you could help me understand why my simple circuit is not generating any outputs.
I used LS153 to design a circuit giving two outputs (4 to 1 conversion) on SIMETRIX.
The circuit when 'run' gets the required inputs (as I see them as a square waveform graphs) but the device is not generating outputs.
Would you be able to spare a moment to offer some clues as to what might be missing?
The inputs generated are as per the below table:

Outputs F1 and F2 will be true for AB and C states as listed:

A​	B​	C​	F1​	F2​
0​	0​	0​	1​	0​
0​	0​	1​	0​	1​
0​	1​	0​	0​	1​
0​	1​	1​	0​	0​
1​	0​	0​	0​	1​
1​	0​	1​	0​	0​
1​	1​	0​	0​	0​
1​	1​	1​	1​	1​

Thank you all for any clues,

 

[Baluncore]

Address bit A is always the complement of address bit B. So only 2 of the 4 inputs are being sampled, namely states '01' = 1, and '10' = 2. Inputs '00' = 0 and '11' = 3 are never selected.

That explains why F1 output does not change.

But it does not explain why the changing state of Not(C) does not appear on F2.

 

[Mirek2010]

Thank you Baluncore, I narrowed the range of inputs just to get some response from the device on SIMETRIX.
I also created various 'single set of inputs' scenarios, and all did not produce any outputs.
What concerns me here is that the SIMETRIX does not even allow me to put a 'digital probe' on the output lines: I can probe any input lines but cannot probe output lines; it seems that the device is inactive but with all the various configurations of inputs, it remains inactive...there has to be a way to resurrect it...I hope

 

[Baluncore]

Either look for an LED indicator to connect to the output,
or, maybe it needs something to think about.

Make an RS flip-flop from two cross-connected 74LS00 NAND gates.
The outputs of your Mux go to the RS inputs.
You can then probe the Mux outputs.

 

[Tom.G]

If V1 and V2 are the same frequency there could be a problem. Try sketching a timing diagram. (yeah, using pencil and paper)