PCA9546A Status: ACTIVE

4-Channel I2C And SMBus Multiplexer With Reset Functions

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Datasheet

4-Channel I2C and SMBus Switch With Reset Function (Rev. E) (PDF 1059 KB)
30 Jan 2008

	PCA9546A
tpd max(ns)	0.3,1
fSCLK(Max)(MHz)	100,400
VCC(Min)(V)	2.3
VCC(Max)(V)	5.5
Pin/Package	16QFN, 16SOIC, 16TSSOP, 16TVSOP
Operating Temp Range(Celsius)	-40 to 85
Max Frequency(kHz)	400
I2C Address	1110 xxx
Vcc range(V)	2.3 to 5.5
Channel Width	4
Reset Input	Yes
Simultaneously Active Channels	1 to 4
5V Tolerant I/O	Yes
Open–Drain I/O Type	Yes
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

PCA9548A: 8-Channel I2C Switch With Reset
PCA9545A: 4-Channel I2C And SMBus Multiplexer With Interrupt Logic And Reset Functions
PCA9544A: 4-Channel I2C And SMBus Multiplexer With Interrupt Logic
TL431A: Adjustable Precision Shunt Regulator
TXB0104: 4-Bit Bidirectional Voltage-Level Translator with Auto Direction Sensing and +/-15 kV ESD Protect
LM358: Dual Operational Amplifiers

More Related Products

Product Information

Features

1-of-4 Bidirectional Translating Switches
I²C Bus and SMBus Compatible
Active-Low Reset Input
Three Address Pins, Allowing up to Eight Devices on the I²C Bus
Channel Selection Via I²C Bus
Power Up With All Switch Channels Deselected
Low R_ON 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
5.5-V Tolerant Inputs
0 to 400-kHz Clock Frequency
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)

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.

The pass gates of the switches are constructed such that the V_CC pin can be used to limit the maximum high voltage, which will be passed by the PCA9546A. 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 pullup resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5.5-V tolerant.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
PCA9546AD	ACTIVE	-40 to 85	0.90 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE		Purchase Samples
PCA9546ADG4	ACTIVE	-40 to 85	0.90 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
PCA9546ADGVR	ACTIVE	-40 to 85	0.85 \| 1ku	TVSOP (DGV) \| 16		2000 \| LARGE T&R
PCA9546ADGVRG4	ACTIVE	-40 to 85	0.85 \| 1ku	TVSOP (DGV) \| 16		2000 \| LARGE T&R
PCA9546ADR	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R
PCA9546ADRG4	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R
PCA9546ADT	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R		Purchase Samples
PCA9546ADTG4	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R		Purchase Samples
PCA9546ADW	ACTIVE	-40 to 85	0.90 \| 1ku	SOIC (DW) \| 16	View	40 \| TUBE	Purchase Samples
PCA9546ADWG4	ACTIVE	-40 to 85	0.90 \| 1ku	SOIC (DW) \| 16	View	40 \| TUBE	Purchase Samples
PCA9546ADWR	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (DW) \| 16	View	2000 \| LARGE T&R
PCA9546ADWRG4	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (DW) \| 16	View	2000 \| LARGE T&R
PCA9546APW	ACTIVE	-40 to 85	0.90 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
PCA9546APWE4	ACTIVE	-40 to 85	0.90 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE		Purchase Samples
PCA9546APWG4	ACTIVE	-40 to 85	0.90 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
PCA9546APWR	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
PCA9546APWRE4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
PCA9546APWRG4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
PCA9546APWT	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	250 \| SMALL T&R		Purchase Samples
PCA9546APWTE4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	250 \| SMALL T&R		Purchase Samples
PCA9546APWTG4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	250 \| SMALL T&R	Purchase Samples
PCA9546ARGVR	ACTIVE	-40 to 85	0.85 \| 1ku	QFN (RGV) \| 16	View	2500 \| LARGE T&R
PCA9546ARGVRG4	ACTIVE	-40 to 85	0.85 \| 1ku	QFN (RGV) \| 16	View	2500 \| LARGE T&R
PCA9546ARGYR	ACTIVE	-40 to 85	0.85 \| 1ku	QFN (RGY) \| 16		1000 \| LARGE T&R
PCA9546ARGYRG4	ACTIVE	-40 to 85	0.85 \| 1ku	QFN (RGY) \| 16		1000 \| LARGE T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 11:46 AM GMT, 25 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 15 WeeksPCA9546AD
Americas	Arrow	240
	Newark	153
	Rochester Electronics	>1k
Asia	Farnell Asia	153
Asia	WPI	80
Europe	Avnet-SILICA	200
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	631
TI Lead Time*: 15 WeeksPCA9546ADG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksPCA9546ADGVR
Americas	Arrow	>1k
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 16 WeeksPCA9546ADGVRG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9546ADR
Americas	Newark	>1k
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	>1k
Europe	Avnet-SILICA	>1k
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 15 WeeksPCA9546ADRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksPCA9546ADT
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	250
TI Lead Time*: 18 WeeksPCA9546ADTG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksPCA9546ADW
Americas	Rochester Electronics	>1k
Asia	WPI	65
Europe	Avnet-SILICA	400
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	345
TI Lead Time*: 18 WeeksPCA9546ADWG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksPCA9546ADWR
Americas	Rochester Electronics	>1k
Europe	Avnet-SILICA	>1k
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 18 WeeksPCA9546ADWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APW
Americas	Arrow	500
	Avnet	217
	Newark	185
Europe	Arrow Northern Europe	360
Europe	Avnet-SILICA	540
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	14
TI Lead Time*: 20 WeeksPCA9546APWE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APWG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APWR
Americas	Newark	>1k
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	>1k
Europe	Avnet-SILICA	>1k
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 20 WeeksPCA9546APWRE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APWT
Americas	Newark	289
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	180
Europe	Farnell	93
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APWTE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9546APWTG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksPCA9546ARGVR
Worldwide	DigiKey	586
TI Lead Time*: 16 WeeksPCA9546ARGVRG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksPCA9546ARGYR
Americas	Arrow	>1k
Americas	Rochester Electronics	1k
Worldwide	DigiKey	641
Worldwide	Mouser Electronics	1k
TI Lead Time*: 16 WeeksPCA9546ARGYRG4
Worldwide	DigiKey	Available
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
PCA9546AD	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADGVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADGVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ADWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWTE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546APWTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9546ARGVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
PCA9546ARGVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
PCA9546ARGYR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
PCA9546ARGYRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for PCA9546A

Datasheet

4-Channel I2C and SMBus Switch With Reset Function (Rev. E) (PDF, 1059 KB)
30 Jan 2008

Application Notes

Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27271 views
24 May 2004 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21719 views
28 May 2003 Read Abstract
Programming Fun Lights With TI's TCA6507 (HTM, 8 KB) 3575 views
30 Nov 2007 Read Abstract

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 90790 views
23 Jul 2009
I2C Guide (Rev. B) (PDF, 2830 KB) 13502 views
12 Aug 2009

Simulation Models

HSpice Model
- HSPICE Model for PCA9546A (ZIP, 112 KB) 167 views
  10 May 2007
IBIS Model
- PCA9546A IBIS Model (Multiple File Format) 144 views
  04 May 2007 Read Abstract

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PCA9546A Status: ACTIVE

4-Channel I2C And SMBus Multiplexer With Reset Functions

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