Układ scalony 74HCT138, DIP16.
https://www.alldatasheet.com/view.jsp?Searchword=74hct138%20datasheet&gad_source=1&gclid=Cj0KCQjwlN6wBhCcARIsAKZvD5jvN611k3Zbu__r-lX-_Hmah2vVfzv_3Hkln8KUVhp-KTAidbnu9vAaAvqfEALw_wcB