This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN74ALS156: Datasheet error

Part Number: SN74ALS156

Good day. Function table of SN74ALS156 in 1-ile to 8-line dmx mode acording datasheet:

The question is why 1Y0 and 1Y1 output low while C1 is low? And why 2Y2 and 2Y3 output low while C2 is high? Is it datasheet error or I have misunderstanding with someshing. Thank you.