TXB0104 Breakout pinout diagram has A and B sides reversed

TECHNICAL SUPPORT Sensors & Modules
1

Customer:

The pinout drawing for the TXB0104 breakout board (https://soldered.com/productdata/2022/03/IC-level-converter-1.png) appears to have an error. The left side pins (A1-A4) are labeled as the higher voltage level while the right side pins (B1-B4) are labeled as the lower voltage level. Shouldn’t it be the opposite?

Originally submitted via email support on 5 December 2024. Migrated to the forum for community visibility.

2

Soldered Support:

You’re correct. Port A is for the lower voltage, and Port B is for the higher voltage. The VCC labels are correct. The left side of the board corresponds to the low-level voltage, while the right side corresponds to the high-level voltage.