# How do I read SNx4HC244 logic diagram?

I want to use SN54HC244 chips so I started reading the data-sheet. It can be found here or directly here (PDF).

On the first page I don't understand the logic diagram:

1A1, 1A2 and 1A3 output labels are all 1Y1. From the table on the second page and the given the pin numbers (18, 16, 14, 12) I think the labels should be as the following image:

Am I mis-understanding something or is the data-sheet wrong?

• The DS is wrong. Not the first time either. May 3, 2018 at 11:54
• Question asked on TI forum: e2e.ti.com/support/applications/hirel/f/935/t/686168. I'll answer to myself if I get an official answer. May 3, 2018 at 12:30