ET2102中文资料2-bit level translator for I2C数据手册ETEK规格书

描述 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.

特性 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

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