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PCA9546A_2 PDF预览

PCA9546A_2

更新时间： 2024-09-18 11:52:07
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德州仪器 - TI 开关
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27页 933K
描述
4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION

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PCA9546A_2 数据手册

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PCA9546A  
4-CHANNEL I2C AND SMBus SWITCH  
WITH RESET FUNCTION  
www.ti.com  
SCPS148E–OCTOBER 2005–REVISED JANUARY 2008  
1
FEATURES  
•
1-of-4 Bidirectional Translating Switches  
I2C Bus and SMBus Compatible  
Active-Low Reset Input  
•
•
Low Standby Current  
•
•
•
Operating Power-Supply Voltage Range of  
2.3 V to 5.5 V  
•
•
•
5.5-V Tolerant Inputs  
Three Address Pins, Allowing up to Eight  
Devices on the I2C Bus  
Channel Selection Via I2C Bus  
0 to 400-kHz Clock Frequency  
•
•
Latch-Up Performance Exceeds 100 mA Per  
JESD 78  
Power Up With All Switch Channels  
Deselected  
•
ESD Protection Exceeds JESD 22  
•
•
Low RON Switches  
–
–
–
2000-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
Allows Voltage-Level Translation Between  
1.8-V, 2.5-V, 3.3-V, and 5-V Buses  
1000-V Charged-Device Model (C101)  
•
•
No Glitch on Power Up  
Supports Hot Insertion  
DESCRIPTION/ORDERING INFORMATION  
The PCA9546A 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.  
An active-low reset (RESET) input allows the PCA9546A 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.  
ORDERING INFORMATION  
TA  
PACKAGE(1)(2)  
ORDERABLE PART NUMBER  
PCA9546ARGVR  
PCA9546ARGYR  
PCA9546AD  
TOP-SIDE MARKING  
PD546A  
QFN – RGV  
QFN – RGY  
Reel of 2500  
Reel of 1000  
Tube of 40  
PD546A  
PCA9546ADG4  
PCA9546ADR  
SOIC – D  
Reel of 2500  
Reel of 250  
PCA9546A  
PCA9546ADRG4  
PCA9546ADT  
PCA9546ADTG4  
PCA9546ADW  
Tube of 40  
Reel of 2000  
Reel of 250  
PCA9546A  
PREVIEW  
–40°C to 85°C  
SOIC – DW  
PCA9546ADWR  
PCA9546ADWT  
PCA9546APW  
Tube of 90  
Reel of 2000  
Reel of 250  
PCA9546APWE4  
PCA9546APWR  
PCA9546APWRE4  
PCA9546APWT  
PCA9546APWTE4  
PCA9546ADGVR  
PCA9546ADGVT  
TSSOP – PW  
TVSOP – DGV  
PD546A  
Reel of 2000  
Reel of 250  
PD546A  
PREVIEW  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
website 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 © 2005–2008, 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.  
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