Datasheet Details
| Part number | TCA9546A |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 1.08 MB |
| Description | Low Voltage 4-Channel I2C and SMBus Switch |
| Datasheet |
 TCA9546A Datasheet
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General Description
The TCA9546A 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 SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register.
Key Features
- 1 1-of-4 Bidirectional translating switches.
- I2C Bus and SMBus compatible.
- Active-low reset input.
- Three address pins, allowing up to eight TCA9546A 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.
- No glitch on power-up.
- Supports hot insertion.