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PCA9545ADWRG4 PDF预览

PCA9545ADWRG4

更新时间： 2024-09-18 20:01:47
品牌 Logo 应用领域
德州仪器 - TI 光电二极管输出元件逻辑集成电路
页数 文件大小 规格书
36页 1269K
描述
9545 SERIES, 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20

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中文翻译

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PCA9545ADWRG4 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP,针数：20
Reach Compliance Code：compliantHTS代码：8542.39.00.01
风险等级：5.19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）：1 ns
认证状态：Not Qualified座面最大高度：2.65 mm
最大供电电压 (Vsup)：5.5 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 (Ni/Pd/Au)
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：NOT SPECIFIED
宽度：7.5 mmBase Number Matches：1

PCA9545ADWRG4 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
PCA9545A  
SCPS147D –OCTOBER 2005–REVISED JUNE 2014  
PCA9545A Low Voltage 4-channel I2C and SMbus Switch With Interrupt Logic and Reset  
Functions  
1 Features  
2 Applications  
1
•
•
•
•
•
•
1-of-4 Bidirectional Translating Switches  
I2C Bus and SMBus Compatible  
Four Active-Low Interrupt Inputs  
Active-Low Interrupt Output  
•
•
•
•
Servers  
Routers (Telecom Switching Equipment)  
Factory Automation  
Products With I2C Slave Address Conflicts (e.g.  
Multiple, Identical Temp Sensors)  
Active-Low Reset Input  
Two Address Terminals, Allowing up to Four  
3 Description  
Devices on the I2C Bus  
The PCA9545A 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 SCn/SDn channel or  
combination of channels can be selected, determined  
by the contents of the programmable control register.  
Four interrupt inputs (INT3–INT0), one for each of the  
downstream pairs, are provided. One interrupt (INT)  
output acts as an AND of the four interrupt inputs.  
•
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  
An active-low reset (RESET) input allows the  
PCA9545A to recover from a situation in which one of  
the downstream I2C buses is stuck in a low state.  
Pulling RESET low resets the I2C state machine and  
causes all the channels to be deselected, as does the  
internal power-on reset function.  
Operating Power-Supply Voltage Range of  
2.3 V to 5.5 V  
•
•
•
5.5 V Tolerant Inputs  
0 to 400-kHz Clock Frequency  
The pass gates of the switches are constructed such  
that the VCC terminal can be used to limit the  
maximum high voltage, which will be passed by the  
PCA9545A. 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 terminals are 5.5 V tolerant.  
Latch-Up Performance Exceeds 100 mA per  
JESD 78  
•
ESD Protection Exceeds JESD 22  
–
–
2000-V Human-Body Model (A114-A)  
1000-V Charged-Device Model (C101)  
Device Information(1)  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
PCA9545A  
TSSOP (20)  
6.50 mm x 4.40 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
4 Simplified Application Diagram  
Channel 0  
SD0  
SC0  
VCC  
SDA  
SCL  
INT  
Slaves A0, A1...AN  
Slaves B0, B1...BN  
INT0  
I2C or SMBus  
Master  
Channel 1  
SD1  
SC1  
INT1  
RESET  
(e.g. µProcessor)  
PCA9545A  
Channel 2  
Channel 3  
SD2  
SC2  
INT2  
Slaves C0, C1...CN  
Slaves D0, D1...DN  
A0  
A1  
SD3  
GND  
SC3  
INT3  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
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中文翻译

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PCA9545ADWRG4 替代型号

型号 品牌 替代类型 描述 数据表
PCA9545AD NXP

功能相似

 4-channel I2C switch with interrupt logic and reset

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