PCA9545A Description
The PCA9545A is a quad bidirectional translating switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCx/SDx channel or bination of channels can be selected, determined by the contents of the programmable control register.
PCA9545A Key Features
- 1-of-4 bidirectional translating switches
- I2C-bus interface logic; patible with SMBus standards
- Four active LOW interrupt inputs
- Active LOW interrupt output
- Active LOW reset input
- Two address pins allowing up to four devices on the I2C-bus
- Channel selection via I2C-bus, in any bination
- Power-up with all switch channels deselected
- Low Ron switches
- Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses