PW PACKAGE

(TOP VIEW)

A0

V

CC

A1

SDA

RESET

SCL

SD0

A2

SC0

SC7

SD1

SD7

SC1

SC6

SD2

SD6

SC2

SC5

SD3

SD5

SC3

SC4

GND

SD4

24

1

23

2

22

3

21

4

20

5

19

6

18

7

17

8

16

9

15

10

14

11

13

12

RGE PACKAGE

(TOP VIEW)

24 23 22 21 20

7

8

9 10 11

19

12

1

2

3

4

5

6

SD0

SC0

SD1

SC1

SD2

SC2

18

17

16

15

14

13

A2

SC7

SD7

SC6

SD6

SC5

TCA9548A

www.ti.com

SCPS207A – MAY 2012 – REVISED JULY 2012

Check for Samples: TCA9548A

1

FEATURES

•

1-of-8 Bidirectional Translating Switches

•

Low Standby Current

•

•

Operating Power-Supply Voltage Range of

1.65 V to 5.5 V

•

Active-Low Reset Input

•

5-V-Tolerant Inputs

•

Address by Three Hardware Address Pins for

Use of up to Eight Devices

•

•

•

Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

•

Power-Up with All Switch Channels Deselected

•

ESD Protection Exceeds JESD 22

•

–

2000-V Human-Body Model (A114-A)

•

Allows Voltage-Level Translation Between 2.5-

V, 3.3-V, and 5-V Buses

–

200-V Machine Model (A115-A)

•

No Glitch on Power Up

–

1000-V Charged-Device Model (C101)

•

Supports Hot Insertion

DESCRIPTION/ORDERING INFORMATION

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 TCA9548A in the event of a timeout or other improper operation by asserting a

machine. Asserting RESET causes the same reset/initialization to occur without powering down the part.

voltage, which is passed by the TCA9548A. This allows the use of different bus voltages on each pair, so that

1.8-V or 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.

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

QFN – RGE

Reel of 3000

TCA9548ARGER

–40°C to 85°C

Reel of 2000

TCA9548APWR

TSSOP – PW

PW548A

Tube of 60

TCA9548APW

(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, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

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 © 2012, 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.