FXMAR2102: Dual Supply 2-Bit Voltage Translator/ Isolator for I2C Applications

The FXMAR2102 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 FXMAR2102 also works in a push-pull environment.

It is intended for use as a voltage translator between I2C -Bus® compliant masters and slaves. Internal 10K 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 from 1.65V 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 directionsense capability. Either port may sense an input signal and transfer it as an output signal to the other port.

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 V_OL = 175mV (Typical), V_IL = 150mV, I_OL = 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 V_CC
• Non-Preferential Power-Up; Either V_CC Can Power-Up First
• Outputs Switch to 3-State if Either V_CC is at GND
• Tolerant Output Enable: 5V
• Packaged in 8-Terminal Leadless MicroPak™ (1.6mm x 1.6mm) and Ultrathin MLP (1.2mm x 1.4mm)
• ESD Protection Exceeds:
• ESD Protection Exceeds:
• B-Port:8kV HBM ESD (per vs. GND & vs. V_CCB)
• All Pins:4kV HBM ESD (per JESD22-A114)
• 2kV CDM (per JESD22-C101)

Application Notes