This is a breakout board for the PCA9306 dual bidirectional voltage-level translator. Because different parts sometimes use different voltage levels to communicate, voltage level translators can be the key to making different parts play nice. The PCA9306 is a dual bidirectional I2C-bus and SMBus voltage-level translator that's operational on the low side from 1.0 V to 3.6 V and on the high side from 1.8 V to 5.5 V. Simply apply your low- and high-side reference voltages to the VREF1 and VREF2 respectively, connect your I/O and drive the Enable pin high to open bidirectional voltage translation without the use of a direction pin! Documents: * Schematic * Eagle Files * Datasheet (PCA9306DC) * Hookup Guide * GitHub Replaces:BOB-10403 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2019-07-26 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2019-11-29 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2019-12-03 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2021-02-09 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2022-02-21 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2025-04-11 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2025-04-14 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2025-05-14 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2025-05-16 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2025-10-21 https://elecena.pl/product/15845071/sparkfun-level-translator-breakout-pca9306 2025-10-23