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PCA9306DC1/DG,125 PDF预览

PCA9306DC1/DG,125

更新时间: 2024-11-26 21:09:39
品牌 Logo 应用领域
恩智浦 - NXP PC光电二极管接口集成电路
页数 文件大小 规格书
35页 450K
描述
PCA9306 - Dual bidirectional I2C-bus and SMBus voltage-level translator SSOP 8-Pin

PCA9306DC1/DG,125 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SSOP包装说明:VSSOP, TSSOP8,.12,20
针数:8Reach Compliance Code:compliant
HTS代码:8542.39.00.01风险等级:5.1
接口集成电路类型:INTERFACE CIRCUITJESD-30 代码:R-PDSO-G8
长度:2.3 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:VSSOP
封装等效代码:TSSOP8,.12,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1 mm
子类别:Other Interface ICs表面贴装:YES
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:2 mm
Base Number Matches:1

PCA9306DC1/DG,125 数据手册

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PCA9306  
Dual bidirectional I2C-bus and SMBus voltage-level translator  
Rev. 8 — 22 January 2014  
Product data sheet  
1. General description  
The PCA9306 is a dual bidirectional I2C-bus and SMBus voltage-level translator with an  
enable (EN) input, and is operational from 1.0 V to 3.6 V (Vref(1)) and 1.8 V to 5.5 V  
(Vbias(ref)(2)).  
The PCA9306 allows bidirectional voltage translations between 1.0 V and 5 V 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.  
The PCA9306 is not a bus buffer like the PCA9509 or PCA9517A that provide both level  
translation and physically isolates the capacitance to either side of the bus when both  
sides are connected. The PCA9306 only isolates both sides when the device is disabled  
and provides voltage level translation when active.  
The PCA9306 can also be used to run two buses, one at 400 kHz operating frequency  
and the other at 100 kHz operating frequency. If the two buses are operating at different  
frequencies, the 100 kHz bus must be isolated when the 400 kHz operation of the other  
bus is required. If the master is running at 400 kHz, the maximum system operating  
frequency may be less than 400 kHz because of the delays added by the translator.  
As with the standard I2C-bus system, pull-up resistors are required to provide the logic  
HIGH levels on the translator’s bus. The PCA9306 has a standard open-collector  
configuration of the I2C-bus. The size of these pull-up resistors depends on the system,  
but each side of the translator must have a pull-up resistor. The device is designed to work  
with Standard-mode, Fast-mode and Fast-mode Plus I2C-bus devices in addition to  
SMBus devices. The maximum frequency is dependent on the RC time constant, but  
generally supports > 2 MHz.  
When the SDA1 or SDA2 port is LOW, the clamp is in the ON-state and a low resistance  
connection exists between the SDA1 and SDA2 ports. Assuming the higher voltage is on  
the SDA2 port when the SDA2 port is HIGH, the voltage on the SDA1 port is limited to the  
voltage set by VREF1. When the SDA1 port is HIGH, the SDA2 port is pulled to the drain  
pull-up supply voltage (Vpu(D)) by the pull-up resistors. This functionality allows a  
seamless translation between higher and lower voltages selected by the user without the  
need for directional control. The SCL1/SCL2 channel also functions as the SDA1/SDA2  
channel.  
 

PCA9306DC1/DG,125 替代型号

型号 品牌 替代类型 描述 数据表
PCA9306GF,115 NXP

完全替代

PCA9306 - Dual bidirectional I2C-bus and SMBus voltage-level translator SON 8-Pin

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