PCA9548A Status: ACTIVE

8-Channel I2C Switch With Reset

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Datasheet

8-Channel I2C Switch With Reset (Rev. C) (PDF 635 KB)
05 Jun 2007

	PCA9548A
Technology Family	PCA
fSCLK(Max)(MHz)	100,400
VCC(Min)(V)	2.3
VCC(Max)(V)	5.5
Pin/Package	24SOIC, 24VQFN, 24SSOP, 24TSSOP, 24TVSOP
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	8
Reset Input	Yes
Simultaneously Active Channels	1 to 8
5V Tolerant I/O	Yes
Open–Drain I/O Type	Yes
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

PCA9543A: Two-Channel I2C-Bus Switch With Interrupt Logic and Reset
PCA9546A: 4-Channel I2C And SMBus Multiplexer With Reset Functions
TL431A: Adjustable Precision Shunt Regulator
SN74LVC1G14: Single Schmitt-Trigger Inverter
TPS62110: Adjustable, 1.5-A, 17-V Vin Step-Down Converter in QFN-16

Product Information

Features

1-of-8 Bidirectional Translating Switches
I²C Bus and SMBus Compatible
Active-Low Reset Input
Address by Three Hardware Address Pins for Use of up to Eight Devices
Channel Selection Via I²C Bus
Power-Up With All Switch Channels Deselected
Low r_ON Switches
Allows Voltage-Level Translation Between 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-V-Tolerant Inputs
400-kHz Fast I²C Bus
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
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 PCA9548A has eight bidirectional translating switches that can be controlled via the I²C bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register.

The system master can reset the PCA9548A in the event of a timeout or other improper operation by asserting a low in the RESET input. Similarly, the power-on reset deselects all channels and initializes the I²C/SMBus state machine. Asserting RESET causes the same reset/initialization to occur without depowering the part.

The pass gates of the switches are constructed so that the V_CC pin can be used to limit the maximum high voltage, which is passed by the PCA9548A. This allows the use of different bus voltages on each pair, so that 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-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	Footprints	Samples
PCA9548ADB	ACTIVE	-40 to 85	1.25 \| 1ku	SSOP (DB) \| 24	View	60 \| TUBE	Purchase Samples
PCA9548ADBG4	ACTIVE	-40 to 85	1.25 \| 1ku	SSOP (DB) \| 24	View	60 \| TUBE	Purchase Samples
PCA9548ADBR	ACTIVE	-40 to 85	1.15 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R
PCA9548ADBRG4	ACTIVE	-40 to 85	1.15 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R
PCA9548ADGVR	ACTIVE	-40 to 85	1.15 \| 1ku	TVSOP (DGV) \| 24		2000 \| LARGE T&R
PCA9548ADGVRG4	ACTIVE	-40 to 85	1.15 \| 1ku	TVSOP (DGV) \| 24		2000 \| LARGE T&R
PCA9548ADW	ACTIVE	-40 to 85	1.25 \| 1ku	SOIC (DW) \| 24	View	25 \| TUBE	Purchase Samples
PCA9548ADWG4	ACTIVE	-40 to 85	1.25 \| 1ku	SOIC (DW) \| 24	View	25 \| TUBE	Purchase Samples
PCA9548ADWR	ACTIVE	-40 to 85	1.15 \| 1ku	SOIC (DW) \| 24	View	2000 \| LARGE T&R
PCA9548ADWRG4	ACTIVE	-40 to 85	1.15 \| 1ku	SOIC (DW) \| 24	View	2000 \| LARGE T&R
PCA9548APW	ACTIVE	-40 to 85	1.25 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
PCA9548APWG4	ACTIVE	-40 to 85	1.25 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
PCA9548APWR	ACTIVE	-40 to 85	1.15 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R
PCA9548APWRG4	ACTIVE	-40 to 85	1.15 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R
PCA9548ARGER	ACTIVE	-40 to 85	1.15 \| 1ku	VQFN (RGE) \| 24	View	3000 \| LARGE T&R
PCA9548ARGERG4	ACTIVE	-40 to 85	1.15 \| 1ku	VQFN (RGE) \| 24	View	3000 \| 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 11:43 AM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 15 WeeksPCA9548ADB
Americas	Arrow	180
	Newark	168
	Rochester Electronics	>1k
Asia	Farnell Asia	168
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9548ADBG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9548ADBR
Americas	Rochester Electronics	>1k
Asia	WPI	>1k
Worldwide	DigiKey	268
TI Lead Time*: 15 WeeksPCA9548ADBRG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9548ADGVR
Americas	Arrow	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 15 WeeksPCA9548ADGVRG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9548ADW
Americas	Arrow	736
Americas	Newark	48
Asia	Farnell Asia	26
Asia	WPI	55
Europe	Avnet-SILICA	50
Europe	Farnell	26
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	259
TI Lead Time*: 15 WeeksPCA9548ADWG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9548ADWR
Americas	Arrow	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 15 WeeksPCA9548ADWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9548APW
Asia	WPI	375
Europe	Avnet-SILICA	480
TI Lead Time*: 20 WeeksPCA9548APWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksPCA9548APWR
Asia	Farnell Asia	59
Asia	WPI	>1k
Europe	Farnell	59
TI Lead Time*: 20 WeeksPCA9548APWRG4
None Reported View Distributors
TI Lead Time*: 16 WeeksPCA9548ARGER
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	824
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 16 WeeksPCA9548ARGERG4
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
PCA9548ADB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADGVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADGVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ADWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548APW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548APWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548APWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548APWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9548ARGER	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
PCA9548ARGERG4	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 PCA9548A

Datasheet

8-Channel I2C Switch With Reset (Rev. C) (PDF, 635 KB)
05 Jun 2007

Application Notes

Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27231 views
24 May 2004 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21673 views
28 May 2003 Read Abstract
Programming Fun Lights With TI's TCA6507 (HTM, 8 KB) 3562 views
30 Nov 2007 Read Abstract

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 90505 views
23 Jul 2009
I2C Guide (Rev. B) (PDF, 2830 KB) 13448 views
12 Aug 2009

Simulation Models

IBIS Model
- PCA9548A IBIS Model (Multiple File Format) 109 views
  24 Jan 2008 Read Abstract

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PCA9548A Status: ACTIVE

8-Channel I2C Switch With Reset

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