Overview
The PCA9545A is a quad bidirectional translating switch controlled through the I2C bus, allowing one or more downstream I2C channels to be selected from a single upstream bus.
Key Features
- 4 selectable downstream I2C channels
- Interrupt logic
- Hardware reset input
- Bidirectional bus switching
- Up to 400 kHz I2C operation
- TSSOP-20 package
Product Specifications
| Manufacturer | NXP Semiconductors |
|---|---|
| MPN | PCA9545APW,118 |
| Product Type | I2C Bus Switch |
| Channels | 4 |
| Bus | I2C |
| Maximum Bus Rate | 400 kHz |
| Control Features | Interrupt logic, reset |
| Package | TSSOP-20 |
| Stock | 100000 pcs |
Typical Applications
- I2C bus expansion
- Multi-sensor systems
- Board management
- Address-conflict isolation
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