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PCA9646D PDF预览

PCA9646D

更新时间： 2024-11-14 12:20:23
品牌 Logo 应用领域
恩智浦 - NXP 开关
页数 文件大小 规格书
22页 423K
描述
Buffered 4-channel 2-wire bus switch

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中文翻译

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PCA9646D 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP, SOP16,.25
针数：16Reach Compliance Code：unknown
HTS代码：8542.39.00.01风险等级：5.77
控制类型：COMMON CONTROL计数方向：BIDIRECTIONAL
系列：9646JESD-30 代码：R-PDSO-G16
JESD-609代码：e4长度：9.9 mm
逻辑集成电路类型：BUS EXCHANGER最大I（ol）：0.03 A
湿度敏感等级：1位数：1
功能数量：1端口数量：4
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C输出特性：OPEN-DRAIN
输出极性：TRUE封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
最大电源电流（ICC）：0.001 mA认证状态：Not Qualified
座面最大高度：1.75 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
翻译：N/A触发器类型：POSITIVE EDGE
宽度：3.9 mmBase Number Matches：1

PCA9646D 数据手册

 浏览型号PCA9646D的Datasheet PDF文件第2页浏览型号PCA9646D的Datasheet PDF文件第3页浏览型号PCA9646D的Datasheet PDF文件第4页浏览型号PCA9646D的Datasheet PDF文件第5页浏览型号PCA9646D的Datasheet PDF文件第6页浏览型号PCA9646D的Datasheet PDF文件第7页 
PCA9646  
Buffered 4-channel 2-wire bus switch  
Rev. 1 — 1 March 2011  
Product data sheet  
1. General description  
The PCA9646 is a monolithic CMOS integrated circuit for 2-wire bus buffering and  
switching in applications including I2C-bus, SMBus, PMBus, and other systems based on  
similar principles.  
Each of the four outputs may be independently enabled in any combination as determined  
by the contents of the programmable control register. Each I/O is impedance isolated from  
all others, thus allowing a total of five branches of 2-wire bus with the maximum specified  
load (e.g., 5 400 pF for Fm+ I2C-bus at 1 MHz, or 5 4 nF at lower frequencies)  
(Ref. 1). More than one PCA9646 may be used in series, providing a substantial fan-out  
capability.  
As per the PCA9525 and PCA9605 simple bus buffers, the PCA9646 includes a  
unidirectional buffer for the clock signal, and a bidirectional buffer for the data signal. The  
direction of the clock signal may also be set by the contents of the programmable control  
register. Clock stretching and timing must always be under control of the master device.  
The PCA9646 has excellent application to 2-wire bus address expansion and increasing  
of maximum load capacitance. Very large LED displays are a perfect example.  
2. Features and benefits  
Drop-in pin compatible with PCA9546A, etc.  
Each I/O is impedance isolated from all others allowing maximum capacitance on all  
branches  
30 mA static sink capability on all ports  
Works with I2C-bus (Standard-mode, Fast-mode, and Fast-mode Plus (Fm+)),  
SMBus (standard and high power mode), and PMBus  
Fast switching times allow operation in excess of 1 MHz  
Allows driving of large loads (e.g., 5 4 nF)  
Hysteresis on I/O increases noise immunity  
Operating voltages from 2.7 V to 5.5 V  
Uncomplicated characteristics suitable for quick implementation in most common  
2-wire bus applications  
3. Applications  
Large arrays of I2C-bus components, e.g., LED displays  
Power management systems  
Game consoles, computers, RAID systems  
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