FAQ: Logic and Voltage Translation > Ground-Level Translators >> Current FAQ
The maximum trace length that ground-level translators (as well as logic devices) can drive is 60 mm. This is a safe trace length for most devices to drive across the majority of applications. This can often be pushed to 120 mm (4700 mil), however users may see signal integrity (SI) issues between these two values.
The 60 mm standard can be shown mathematically from the typical device bandwidth, 300 MHz, and the typical effective permittivity of a PCB εr, around 4.
Users can use this excel to calculate the maximum trace length: 2313.Maximum Trace Length Formula.xlsx
For more in-depth information, see [FAQ] What is the maximum trace length that a logic device can drive?