EFM8BB2 Datasheet, PDF (27/55 Pages) Silicon Laboratories – The EFM8BB2 highlighted features are listed below

EFM8BB2 Data Sheet
Electrical Characteristics
Figure 4.6. Typical V_OH Curves
Figure 4.7. Typical V_OL Curves
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.1 | 26