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PCA9547BS

更新时间： 2024-09-18 10:17:03
品牌 Logo 应用领域
恩智浦 - NXP 解复用器逻辑集成电路
页数 文件大小 规格书
26页 142K
描述
8-channel I2C-bus multiplexer with reset

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中文翻译

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PCA9547BS 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：QFN
包装说明：VQCCN,针数：24
Reach Compliance Code：compliantHTS代码：8542.39.00.01
风险等级：5.36Is Samacsys：N
其他特性：ALSO OPERATES AT 4.5V TO 5.5V SUPPLY系列：9547
JESD-30 代码：S-PQCC-N24JESD-609代码：e4
长度：4 mm逻辑集成电路类型：MULTIPLEXER
湿度敏感等级：1功能数量：1
输入次数：8输出次数：1
端子数量：24最高工作温度：85 °C
最低工作温度：-40 °C输出极性：TRUE
封装主体材料：PLASTIC/EPOXY封装代码：VQCCN
封装形状：SQUARE封装形式：CHIP CARRIER, VERY THIN PROFILE
峰值回流温度（摄氏度）：260传播延迟（tpd）：0.3 ns
认证状态：Not Qualified座面最大高度：1 mm
最大供电电压 (Vsup)：3.6 V最小供电电压 (Vsup)：2.3 V
标称供电电压 (Vsup)：2.5 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：NICKEL PALLADIUM GOLD
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：4 mmBase Number Matches：1

PCA9547BS 数据手册

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PCA9547  
8-channel I2C-bus multiplexer with reset  
Rev. 03 — 10 July 2009  
Product data sheet  
1. General description  
The PCA9547 is an octal bidirectional translating multiplexer controlled by the I2C-bus.  
The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Only one  
SCx/SDx channel can be selected at a time, determined by the contents of the  
programmable control register. The device powers up with Channel 0 connected, allowing  
immediate communication between the master and downstream devices on that channel.  
An active LOW reset input allows the PCA9547 to recover from a situation where one of  
the downstream I2C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets the  
I2C-bus state machine causing all the channels to be deselected, except Channel 0 so  
that the master can regain control of the bus.  
The pass gates of the multiplexers are constructed such that the VDD pin can be used to  
limit the maximum high voltage which will be passed by the PCA9547. This allows the use  
of different bus voltages on each pair, so that 1.8 V, 2.5 V, or 3.3 V parts can communicate  
with 5 V parts without any additional protection. External pull-up resistors pull the bus up  
to the desired voltage level for each channel. All I/O pins are 5 V tolerant.  
2. Features  
I 1-of-8 bidirectional translating multiplexer  
I I2C-bus interface logic; compatible with SMBus standards  
I Active LOW RESET input  
I 3 address pins allowing up to 8 devices on the I2C-bus  
I Channel selection via I2C-bus, one channel at a time  
I Power-up with all channels deselected except Channel 0 which is connected  
I Low Ron multiplexers  
I Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses  
I No glitch on power-up  
I Supports hot insertion  
I Low standby current  
I Operating power supply voltage range of 2.3 V to 5.5 V  
I 5 V tolerant inputs  
I 0 Hz to 400 kHz clock frequency  
I ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per  
JESD22-A115, and 1000 V CDM per JESD22-C101  
I Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA  
I Packages offered: SO24, TSSOP24, HVQFN24  
1234567...26

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