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PCA9545AD,118 PDF预览

PCA9545AD,118

更新时间： 2024-09-18 19:59:03
品牌 Logo 应用领域
恩智浦 - NXP PC光电二极管逻辑集成电路
页数 文件大小 规格书
32页 301K
描述
PCA9545A/45B/45C - 4-channel I²C-bus switch with interrupt logic and reset SOP 20-Pin

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PCA9545AD,118 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：SOP包装说明：SOP,
针数：20Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：1.04
其他特性：ALSO OPERATES WITH 4.5 TO 5.5V SUPPLY系列：9545
JESD-30 代码：R-PDSO-G20JESD-609代码：e4
长度：12.8 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：4输出次数：1
端子数量：20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封装形状：RECTANGULAR
封装形式：SMALL OUTLINE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：2.65 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)：3.3 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：NICKEL PALLADIUM GOLD端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：7.5 mm
Base Number Matches：1

PCA9545AD,118 数据手册

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PCA9545A/45B/45C  
4-channel I2C-bus switch with interrupt logic and reset  
Rev. 9 — 5 May 2014  
Product data sheet  
1. General description  
The PCA9545A/45B/45C is a quad bidirectional translating switch controlled via the  
I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any  
individual SCx/SDx channel or combination of channels can be selected, determined by  
the contents of the programmable control register. Four interrupt inputs, INT0 to INT3, one  
for each of the downstream pairs, are provided. One interrupt output, INT, acts as an AND  
of the four interrupt inputs.  
An active LOW reset input allows the PCA9545A/45B/45C 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 and causes all the channels to be deselected as  
does the internal power-on reset function.  
The pass gates of the switches are constructed such that the VDD pin can be used to limit  
the maximum high voltage which is passed by the PCA9545A/45B/45C. This allows the  
use of different bus voltages on each pair, so that 1.8 V or 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.  
The PCA9545A, PCA9545B and PCA9545C are identical except for the fixed portion of  
the slave address.  
2. Features and benefits  
1-of-4 bidirectional translating switches  
I2C-bus interface logic; compatible with SMBus standards  
4 active LOW interrupt inputs  
Active LOW interrupt output  
Active LOW reset input  
2 address pins allowing up to 4 devices on the I2C-bus  
Alternate address versions A, B and C allow up to a total of 12 devices on the bus for  
larger systems or to resolve address conflicts  
Channel selection via I2C-bus, in any combination  
Power-up with all switch channels deselected  
Low Ron switches  
Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses  
No glitch on power-up  
Supports hot insertion  
Low standby current  
Operating power supply voltage range of 2.3 V to 5.5 V  
 
 
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PCA9545AD,118 替代型号

型号 品牌 替代类型 描述 数据表
PCA9545APW,112 NXP

完全替代

 PCA9545A/45B/45C - 4-channel I²C-bus switch w
PCA9545APW,118 NXP

类似代替

 PCA9545A/45B/45C - 4-channel I²C-bus switch w

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