App note from NXP Semiconductors on proper board layout guideline for NVT4557/NVT4558/NVT4858 voltage-level translators for optimal operation. Link here (PDF)
High performance digital signals on modern microprocessors are designed using advanced CMOS process to take advantage of its low power consumption. However, CMOS logic has very fast edge rates in the range of 1 ns to 2 ns. PCB traces might exhibit ringing, signal degradation and reflection due to the effect of the signal’s fast rise and fall time contributed by the PCB transmission characteristic.
The NVT4858 is an SD 3.0 compliant dual voltage level translator with auto-direction control. The NVT4557/4558 is a SIM SIO-7816 Smart Card compliant dual voltage level translator with auto-direction control.