2 layers13.7 × 26.4 mm

TXB0108DQSR breakout
upsidedownlabs/TXB0108
Upside Down Lab's TXB0108 8-Bit Bidirectional Voltage-Level Translator with Auto-Direction Sensing and ±15-kV ESD Protection.
8 parts12MIT
KiCad boards from 1 GitHub repository tagged “logic-level-translator”, the most starred first; open any of them in PCBKit.

upsidedownlabs/TXB0108
Upside Down Lab's TXB0108 8-Bit Bidirectional Voltage-Level Translator with Auto-Direction Sensing and ±15-kV ESD Protection.