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UM3212 - Dual bidirectional I2C-bus and SMBus voltage-level translator

General Description

The UM3212 is a dual bidirectional I2C-bus and SMBus voltage-level translator with an enable (EN) input, and is operational from 1.0V to 3.6V (Vref(1)) and 1.8V to 5.5V(Vbias(ref)(2)).

The UM3212 allows bidirectional voltage translations between 1.0V and 5V without the use of a direction pin.

Key Features

  • z 2-Bit Bidirectional Translator for SDA z Open-Drain I2C-Bus I/O Ports (SCL1, and SCL Lines in Mixed-Mode I2C-Bus SDA1, SCL2 and SDA2).

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Datasheet Details

Part number UM3212
Manufacturer Union Semiconductor
File Size 350.99 KB
Description Dual bidirectional I2C-bus and SMBus voltage-level translator
Datasheet download datasheet UM3212 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UM3212 Dual Bidirectional I2C-Bus and SMBus Voltage-Level Translator UM3212M8 MSOP8 UM3212DA DFN8 2.1×1.6 General Description The UM3212 is a dual bidirectional I2C-bus and SMBus voltage-level translator with an enable (EN) input, and is operational from 1.0V to 3.6V (Vref(1)) and 1.8V to 5.5V(Vbias(ref)(2)). The UM3212 allows bidirectional voltage translations between 1.0V and 5V without the use of a direction pin. The low ON-state resistance (Ron) of the switch allows connections to be made with minimal propagation delay. When EN is HIGH, the translator switch is on, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is LOW, the translator switch is off, and a high-impedance state exists between ports.