UNISONIC TECHNOLOGIES CO., LTD

UCA9306

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 9

Copyright © 2018 Unisonic Technologies Co., Ltd

QW-R140-004.b

AND SMBUS VOLTAGE-LEVEL

TRANSLATOR



DESCRIPTION

The UTC UCA9306 device is a dual bidirectional I

voltage-level translator with an enable(EN) input, and is operational

The UTC UCA9306 device allows bidirectional voltage translations

between 1.2V and 5V,without the use of a direction pin .The low

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.

In addition to voltage translation, the UTC UCA9306 device can be

used to isolate a 400-kHz bus from a 100-kHz busby controlling the EN

pin, and disconnecting the slower bus during fast-mode communication.



FEATURES

* 2-Bit Bidirectional Translator for SDA and SCL Lines in

Mixed-Mode I

* I

* LessThan1.5-ns Maximum Propagation Delay to

Accommodate Standard-Mode and Fast-Mode I

Devices and Multiple Masters

* Allows Voltage-Level Translation Between

* Provides Bidirectional Voltage Translation With No

Direction Pin

* Low 3.5-Ω ON-State Resistance Between Input And

Output Ports Provides Less Signal Distortion

* Open-Drain I

* 5-V Tolerant I

Signal Operation

* High-Impedance SCL1,SDA1,SCL2,and SDA2 Pins for

EN=Low

* Lockup-Free Operation for Isolation When EN=Low

* Flow-Through Pinout for Ease of Printed-Circuit-Board

Trace Routing