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PCA9543A

更新时间： 2024-09-17 04:54:07
品牌 Logo 应用领域
德州仪器 - TI 开关
页数 文件大小 规格书
20页 500K
描述
TWO-CHANNEL I2C-BUS SWITCH WITH INTERRUPT LOGIC AND RESET

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PCA9543A 数据手册

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PCA9543A  
TWO-CHANNEL I2C-BUS SWITCH  
WITH INTERRUPT LOGIC AND RESET  
www.ti.com  
SCPS169–SEPTEMBER 2007  
1
FEATURES  
•
1-of-2 Bidirectional Translating Switches  
I2C Bus and SMBus Compatible  
Two Active-Low Interrupt Inputs  
Active-Low Interrupt Output  
•
•
•
Supports Hot Insertion  
Low Standby Current  
•
•
•
•
•
Operating Power-Supply Voltage Range of  
2.3 V to 5.5 V  
•
•
•
5-V Tolerant Inputs  
Active-Low Reset Input  
0 to 400-kHz Clock Frequency  
Two Address Pins Allowing up to Four  
Devices on the I2C Bus  
Channel Selection Via I2C Bus, in Any  
Combination  
Latch-Up Performance Exceeds 100 mA Per  
JESD78  
•
•
•
ESD Protection Exceeds JESD 22  
Power Up With All Switch Channels  
Deselected  
–
–
–
2000-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
•
•
Low ron Switches  
1000-V Charged-Device Model (C101)  
Allows Voltage-Level Translation Between  
1.8-V, 2.5-V, 3.3-V, and 5-V Buses  
•
No Glitch on Power Up  
D PACKAGE  
(TOP VIEW)  
PW PACKAGE  
(TOP VIEW)  
VCC  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
A0  
A1  
VCC  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
A0  
A1  
SDA  
SCL  
INT  
SDA  
SCL  
INT  
RESET  
INT0  
SD0  
RESET  
INT0  
SD0  
SC1  
SD1  
INT1  
SC1  
SD1  
INT1  
SC0  
SC0  
GND  
8
GND  
8
DESCRIPTION/ORDERING INFORMATION  
The PCA9543A is a bidirectional translating switch controlled by the I2C bus. The SCL/SDA upstream pair fans  
out to two 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. Two interrupt inputs (INT0–INT1),  
one for each of the downstream pairs, are provided. One interrupt output (INT) acts as an AND of the two  
interrupt inputs.  
ORDERING INFORMATION  
TA  
PACKAGE(1)(2)  
ORDERABLE PART NUMBER  
PCA9543AD  
TOP-SIDE MARKING  
PCA9543A  
Tube of 50  
SOIC – D  
Reel of 2500  
Tube of 90  
PCA9543ADR  
PCA9543APW  
PCA9543APWR  
–40°C to 85°C  
TSSOP – PW  
PD543A  
Reel of 2000  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
web site at www.ti.com.  
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2007, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...20

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