PCA9545A Overview
Key Specifications
Package: TSSOP
Mount Type: Surface Mount
Pins: 20
Operating Voltage: 2.5 V
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.
Key Features
- 1-of-4 bidirectional translating switches
- I2C-bus interface logic; compatible 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 combination
- 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
