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DATA SHEET
TCA9546A Low Voltage 4-Channel I2C and SMBus Switch with Reset Function
1 Features
- 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
- Low standby current
- Operating power-supply voltage range of 1.65 V to 5.5 V
- 5.5 V Tolerant inputs
- 0 to 400-kHz Clock frequency
- Latch-up performance exceeds 100 mA Per JESD 78
- ESD Protection exceeds JESD 22
- 4000-V Human-body model (A114-A)
- 1500-V Charged-device model (C101)
2 Applications
- Servers
- Routers (telecom switching equipment)
- Factory automation
- Products with I2C slave address conflicts (multiple, identical temp sensors)
![](//collector-Dl82I3Ui.perimeterx.net/api/v1/collector/pxPixel.gif?appId=Dl82I3Ui)
![](https://id.rlcdn.com/464526.gif)