ET2104中文资料4-bit level translator for I2C数据手册ETEK规格书

描述 Description

The ET2104 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 ET2104 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 four 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: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 VCCCan Power-Up First

• Outputs Switch to 3-State if Either VCCis at GND

• Tolerant Output Enable: 5V