Is there an error in the datasheet for the SN74LS169B?
I don't ever post on here - maybe I'll start more after this. When you ask TI to update a standard logic datasheet (like the SN74LS169B), I'm one of the applications engineers that reviews, categorizes, and implements the fix.
Datasheets have errors because they are written by humans, and we (the humans that write them) always appreciate when people bring these errors to us. The best place to do this is on the E2E support forums, which gives you a direct communication line to hundreds of applications engineers at TI. By entering the part number you are using when you make a post, the system will know exactly to which internal team to route your question.
In this case, I have opened a ticket in our internal datasheet error tracking system for me to review this logic diagram to verify the issue you have presented. Once I verify the issue (I have no reason to doubt your logic, so I'm assuming you are right), since this issue has a low impact on most customers, I will mark it as an update to be included when the datasheet is updated to the new standards.
I wanted to reply on here to let you know that you aren't being ignored, but this fix will likely take quite a while to be implemented due to our current workload and other tasks taking priority.
Thank you for bringing this issue to my attention!