Tool/software:
Auto Bi-Directional translators demand additional design considerations over other translators, such as external RC loading to ensure compatibility with host/target devices. These level shifters are weak in drive strength due to passFET architectures (LSF, TXS) or weakly dampened outputs (TXB) to be able to support the auto direction capability. With this in mind, system designers need to be mindful of the output loading requirements. The attached excel document can be used to estimate the expected performance/ characteristics.
7536.Auto_Dir_Translators_Calculator_Tool.xlsx
Please note that this tool should not be used as a standalone tool to evaluate performance of the device. Customers should always verify with silicon per their board specifics to ensure SI is appropriate.
The EVM links below can be used to evaluate the devices: