设为首页 收藏本站
烽火社区 首页 方案 智能触控 计算机外设 查看内容
平板电脑 智能手机 数吗设备 游戏设施 计算机外设

IntersilISL3300xI2C总线扩展方案

2017-11-24 05:42 PM| 发布者: mamdyken| 查看: 916| 评论: 0

摘要: Intersil公司的ISL3300x系列(ISL33001,ISL33002,ISL33003)是2路I2C总线双相缓冲器,可以扩展总线的电容凌驾400pF,工作电压2.3V到5.5V,工作温度-40℃到+85℃.,工作频率大于400kHz,具有热插拔功能,主要用在I2C总线扩展 ...

Intersil 公司的ISL3300x系列(ISL33001, ISL33002, ISL33003)是2路I2C总线双相缓冲器,可以扩展总线的电容凌驾400pF,工作电压2.3V到5.5V,工作温度-40℃ 到+85℃.,工作频率大于400kHz,具有热插拔功能,主要用在I2C总线扩展器和电容缓冲器,通信,数据通信的服务机架和盘算机服务器,台式盘算机,板卡热拔和总线隔离.本京电港论坛文章先容ISL3300x系列主要特点, 电路方框架图, 典范应用电路框架图和ISL3300x评估板主要特点,电路原理图纸和元件清单(BOM).

The ISL33001, ISL33002, ISL33003 2-Channel Bus Buffers provide the necessary buffering for extending the bus capacitance beyond the 400pF maximum specified by the I2C specification. In addition, the ISL33001, ISL33002, ISL33003 feature rise time accelerator circuitry to reduce power consumption from passive bus pull-up resistors and improve data-rate performance. All devices also include hot swap circuitry to prevent corruption of the data and clock lines when I2C devices are plugged into a live backplane and level translation for mixed supply voltage applications.

The ISL33001, ISL33002, ISL33003 operates at supply voltages from +2.3V to +5.5V at a temperature range of -40℃ to +85℃.

ISL3300x系列主要特点:

• 2 Channel I2C Compatible Bi-Directional Buffer

• +2.3VDC to +5.5VDC Supply Range

• >400kHz Operation

• Bus Capacitance Buffering

• Rise Time Accelerators

• Hot-Swapping Capability

• ±6kV Class 3 HBM ESD Protection On All Pins

• ±12kV HBM ESD Protection on SDA/SCL Pins

• Enable Pin (ISL33001 and ISL33003)

• Logic Level Translation (ISL33002 and ISL33003)

• READY Logic Pin (ISL33001)

• Accelerator Disable Pin (ISL33002)

• Pb-Free (RoHS Compliant) 8 Ld TDFN (3mmx3mm) and 8 Ld MSOP packages

• Low Quiescent Current . . . . . . . . . . . . . 2.2mA typ

• Low Shutdown Current . . . . . . . . . . . . . . 0.5μA typ

ISL3300x 系列应用:

• I2C Bus Extender and Capacitance Buffering

• Server Racks for Telecom, Datacom, and Computer Servers

• Desktop Computers

• Hot-Swap Board Insertion and Bus Isolation

图1{京电港论坛}.ISL3300x电路方框架图

图2{京电港论坛}.ISL3300x典范应用电路框架图

ISL3300x评估板

ISL33001MSOPEVAL1Z, ISL33002MSOPEVAL1Z, ISL33003MSOPEVAL1Z Evaluation Board

The ISL33001MSOPEVAL1Z, ISL33002MSOPEVAL1Z, and ISL33003MSOPEVAL1Z evaluation board is designed to provide a quick and easy method for evaluating the ISL33001, ISL33002, ISL33003 2-Channel Bus Buffer. It is recommended to understand the operation of the IC for a complete utilization of the evaluation board.

The evaluation board is developed to evaluate the performance of the buffer used in a
typical application.

The ISL3300x MSOP package IC is soldered onto the evaluation board and is designated as U1. A typical application of the ISL3300x is an I2C bus buffer. The evaluation board contains all the necessary components to interface the buffer to an I2C bus.

Discrete NMOS transistors are used to produce the pull-down functions of a wired-AND bus. Each SDA/SCL pin on the buffer is connected to an external open-drain NMOS transistor. The evaluation board also contains connections for the bus pull-up resistor and load capacitance. The logic input pins on the ISL3300x IC can be held logic High by a pull-up resistor or driven dynamically with an external logic source.

ISL3300x评估板主要特点:

• Evaluation Board for ISL33001IUZ, ISL33002IUZ, and ISL33003IUZ IC in MSOP Package

• +2.3V to +5.5V Supply Operation

• Configured to operate in I2C environment

• Two Channel Supply for Level Shifting Applications (ISL33002 and ISL33003)

• On-Board Discrete NMOS Open-Drain Transistors Connected to SDA/SCL Pins

• 3V Logic for NMOS Transistor Gate

• On-Board Discrete Bus Pull-Up Resistors and Load Capacitance on SDA/SCL Pins

• Convenient Test Points on SDA/SCL pins


图3{京电港论坛}. ISL3300x评估板外形实物图

图4{京电港论坛}. ISL3300x评估板电路原理图纸

ISL3300x评估板质料清单(BOM):

详情请复制打开此衔接地址:
http://www.intersil.com/data/fn/fn7560.pdf

http://www.intersil.com/data/an/an1543.pdf


鲜花

握手

雷人

路过

鸡蛋

相关阅读

热点图文
推荐阅读
文章排行
返回顶部