![PCA9548- Can we pull up the upstream I2C to 3.3V and down stream to 2.5V - Interface forum - Interface - TI E2E support forums PCA9548- Can we pull up the upstream I2C to 3.3V and down stream to 2.5V - Interface forum - Interface - TI E2E support forums](https://e2e.ti.com/resized-image/__size/1230x0/__key/communityserver-discussions-components-files/138/5852.Schematic.png)
PCA9548- Can we pull up the upstream I2C to 3.3V and down stream to 2.5V - Interface forum - Interface - TI E2E support forums
![Why do I need these Pull-Up Resistors in my I2C interface and Arduino doesn't require them? : r/AskElectronics Why do I need these Pull-Up Resistors in my I2C interface and Arduino doesn't require them? : r/AskElectronics](https://preview.redd.it/x2b6oigqgoz81.jpg?width=861&format=pjpg&auto=webp&s=eb5412cdec38e5895dbc2fce5c9da170a4a7709c)
Why do I need these Pull-Up Resistors in my I2C interface and Arduino doesn't require them? : r/AskElectronics
![What issues could multiple pull-up resistors with different sources cause for I2C? - Electrical Engineering Stack Exchange What issues could multiple pull-up resistors with different sources cause for I2C? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/of2kH.png)
What issues could multiple pull-up resistors with different sources cause for I2C? - Electrical Engineering Stack Exchange
![Why does this schematic send 3.3V with 10k resistors into the I2C bus? - Networking, Protocols, and Devices - Arduino Forum Why does this schematic send 3.3V with 10k resistors into the I2C bus? - Networking, Protocols, and Devices - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/7/2/e/72e1a379fc34bbc1cefe1b2ce7694011802f2f02_2_1024x594.png)