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ET2102
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General Description
The ET2102 is a high-performance configurable dual-voltage-supply translator for bi-directional voltage translation over a wide range of input and output voltages levels. The ET2102 also works in a push-pull environment. It is intended for use as a voltage translator between I2C bus compliant masters and slaves. Internal 10KΩ pull-up resistors are provided. The device is designed so the A port tracks the VCCA level and the B port tracks the VCCB level. This allows for bi-directional A/B port voltage translation between any two levels from 1.65V to 5.5V. VCCA can equal VCCB from1.65V to 5.5V. Either VCC can be powered-up first. Internal power-down control circuits place the device in 3-state if either VCC is removed. The two ports of the device have automatic direction-sense capability. Either port may sense an input signal and transfer it as an output signal to the other port.
Specification
Sample
Features
- Bi-Directional interface between any two levels from 1.65V to 5.5V
- No direction control needed
- Internal 10K pull-up resistors
- System GPIO resources not required when OE tied to VCCA
- I2C-Bus isolation
- A/B port VOL = 175mV (Typical), VIL = 150mV@IOL = 6mA
- Open-drain inputs / outputs
- Works in push pull environment
- Accommodates standard-mode and fast-mode I2C-bus devices
- Supports I2C clock stretching & multi-master
- Fully configurable: inputs and outputs track VCC
- Non-Preferential Power-Up; either VCC can power-up first
- Outputs switch to 3-State if either VCC is at GND
- Tolerant output enable up to 5V
