Datasheet Details
| Part number | PCA9543A |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 169.47 KB |
| Description | 2-channel I2C-bus switch |
| Datasheet |
 PCA9543A Datasheet
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General Description
The PCA9543A/43B/43C is a bidirectional translating switch, controlled by the I2C-bus.
The SCL/SDA upstream pair fans out to two downstream pairs, or channels.
Any individual SCx/SDx channels or combination of channels can be selected, determined by the contents of the programmable control register.
Key Features
- I I I I I I I I I I I I I I I 1-of-2 bidirectional translating switches I2C-bus interface logic; compatible with SMBus standards 2 active LOW interrupt inputs Active LOW interrupt output Active LOW reset input 2 address pins allowing up to 4 devices on the I2C-bus Alternate address versions A, B and C allow up to a total of 12 devices on the bus for larger systems or to resolve address conflicts Channel selection via I2C-bus, in any combination Power-up with all switch channels deselected Low Ron.