https://docs.amd.com/r/2020.2-English/ug953-vivado-7series-libraries/OBUFT?contentId=z3ftUTeIUcVudcVnRYWs_g
OBUFT - OBUFT - 2020.2 English - Primitive: 3-State Output Buffer with Active Low Output Enable -...
Primitive: 3-State Output Buffer with Active Low Output Enable