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PCA9544APWTG4

更新时间： 2024-11-07 15:47:35
品牌 Logo 应用领域
德州仪器 - TI 光电二极管逻辑集成电路
页数 文件大小 规格书
34页 1258K
描述
4-Channel I<sup>2</sup>C And SMBus Multiplexer With Interrupt Logic 20-TSSOP -40 to 85

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PCA9544APWTG4 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：TSSOP
包装说明：TSSOP, TSSOP20,.25针数：20
Reach Compliance Code：compliantHTS代码：8542.39.00.01
风险等级：5.2系列：9544
JESD-30 代码：R-PDSO-G20JESD-609代码：e4
长度：6.5 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：TSSOP
封装等效代码：TSSOP20,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
传播延迟（tpd）：1000 ns认证状态：Not Qualified
座面最大高度：1.2 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：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

PCA9544APWTG4 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
PCA9544A  
SCPS146E –OCTOBER 2005–REVISED JUNE 2014  
PCA9544A Low Voltage 4-Channel I2C and SMBus Multiplexer With Interrupt Logic  
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 (For  
Example, Multiple, Identical Temp Sensors)  
Three Address Pins, Allowing up to Eight Devices  
on the I2C Bus  
3 Description  
•
•
•
•
Channel Selection Via I2C Bus  
Power Up With All Switch Channels Deselected  
Low RON Switches  
The PCA9544A is a quad bidirectional translating  
switch controlled via the I2C bus. The SCL/SDA  
upstream pair fans out to four downstream pairs, or  
channels. One SCL/SDA pair can be selected at a  
time, and this is 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 output (INT) acts as an  
AND of the four interrupt inputs.  
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  
A power-on reset function puts the registers in their  
default state and initializes the I2C state machine,  
with no channel selected.  
•
•
•
5.5-V Tolerant Inputs  
0 to 400-kHz Clock Frequency  
The pass gates of the switches are constructed such  
that the VCC pin can be used to limit the maximum  
high voltage, which will be passed by the PCA9544A.  
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.  
Latch-Up Performance Exceeds 100 mA Per  
JESD 78  
•
ESD Protection Exceeds JESD 22  
–
–
–
2000-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
1000-V Charged-Device Model (C101)  
Device Information(1)  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
PCA9544A  
TSSOP (20)  
6.50 mm × 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  
I2C or SMBus  
Master  
(e.g. µProcessor)  
INT0  
Channel 1  
SD1  
SC1  
Slaves B0, B1...BN  
INT1  
PCA9544A  
Channel 2  
SD2  
SC2  
A0  
A1  
Slaves B0, B1...BN  
INT2  
A2  
Channel 3  
SD3  
SC3  
GND  
Slaves B0, B1...BN  
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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