General 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 V_CCA level and the B port tracks the V_CCB level. This allows for bi-directional A/B-port voltage translation between any two levels from 1.65V to 5.5V. V_CCA can equal V_CCB from1.65V to 5.5V. Either V_CC can be powered-up first. Internal power-down control circuits place the device in 3-state if either V_CC is removed.

Features

●   Bi-Directional Interface between Any Two Levels:1.65V to 5.5V

●   Internal 10K Pull-Up Resistors

●   I²C-Bus Isolation

●   Open-Drain Inputs / Outputs

●   Accommodates Standard-Mode and Fast-Mode I²C-Bus Devices

●   Outputs Switch to 3-State if Either V_CC is at GND

●   Part No. and package

Application Circuits