PCA9306数据手册UTC中文资料规格书

描述 Description

The UTC  PCA9306 device is a dual bidirectional I2C and SMBusvoltage-level translator with an enable(EN) input, and is operationalfrom 1.2-V to 3.3-V VREF1 and 1.8-V to 5.5-V VREF2. The UTC PCA9306 device allows bidirectional voltage translations between 1.2V and 5V,without the use of a direction pin .The low ON-state resistance (RON) of the switch allows connections to be madewith minimal propagation delay. When EN is high, the translator switchis 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 stateexists between ports. In addition to voltage translation, the UTC PCA9306 device can beused to isolate a 400-kHz bus from a 100-kHz busby controlling the ENpin, and disconnecting the slower bus during fast-mode communication.

特性 Features

2-Bit Bidirectional Translator for SDA and SCL Lines in Mixed-Mode I2C Applications I2C and SMBus Compatible LessThan1.5-ns Maximum Propagation Delay to Accommodate    Standard-Mode and Fast-Mode I2C Devices and Multiple Masters Allows Voltage-Level Translation Between 1.2V VREF1 and 1.8-V,2.5-V,3.3-V,or 5-V VREF2 1.8V VREF1 and 2.5-V,3.3-V,or 5-V VREF2 2.5V VREF1 and 3.3-V or 5-V VREF2  .3V VREF1 and 5-V VREF2 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 I2C I/O Ports(SCL1,SDA1,SCL2,and SDA2) 5-V Tolerant I2C I/O Ports to Support Mixed-Mode 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