900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






etcTI

TCA9543A Datasheet Preview

TCA9543A Datasheet

Low Voltage 2-Channel I2C Bus Switch

No Preview Available !

Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
TCA9543A
SCPS206B – MARCH 2014 – REVISED NOVEMBER 2019
TCA9543A Low Voltage 2-Channel I2C Bus Switch With Interrupt Logic And Reset
1 Features
1 1-of-2 Bidirectional Translating Switches
• I2C Bus and SMBus Compatible
• Two active-low interrupt inputs
• Active-low interrupt output
• Active-low reset input
• Two address pins allowing up to four TCA9543A
devices on the I2C bus
• Channel selection via I2C bus, in any combination
• Power-up with all switch channels deselected
• Low RON 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 1.65-V
to 5.5-V
• 5.5-V Tolerant inputs
• 0 to 400-kHz Clock frequency
• Latch-up Performance exceeds 100-mA Per
JESD78
• ESD Protection exceeds JESD 22
– 4000-V Human-body model (A114-A)
– 1500-V Charged-device model (C101)
2 Applications
• Servers
• Routers (telecom switching equipment)
Factory automation
• Products with I2C slave address conflicts (multiple,
identical temp sensors)
3 Description
The TCA9543A is a dual bidirectional translating
switch controlled by the I2C bus. The SCL/SDA
upstream pair fans out to two downstream pairs, or
channels. Either individual SCn/SDn channel or both
channels can be selected, determined by the
contents of the programmable control register. Two
interrupt inputs (INT1–INT0), one for each of the
downstream pairs, are provided. One interrupt output
(INT) acts as an AND of the two interrupt inputs.
An active-low reset (RESET) input allows the
TCA9543A to recover from a situation where one of
the downstream I2C buses is stuck in a low state.
Pulling RESET low resets the I2C state machine and
causes both of the channels to be deselected, as
does the internal power-on reset function.
The pass gates of the switches are constructed such
that the VCC terminal can be used to limit the
maximum high voltage, which will be passed by the
TCA9543A. 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 pull-up resistors pull
the bus up to the desired voltage level for each
channel. All I/O terminals are 5.5-V tolerant.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TCA9543A
TSSOP (14)
SOIC (14)
5.00 mm × 4.40 mm
8.65 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application Diagram
I2C or SMBus
Master
(e.g. Processor)
SDA
SCL
INT
VCC
RESET
Channel 0
SD0
SC0
INT0
Slaves A0, A1...AN
TCA9543A
A0
A1
GND
SD1 Channel 1
SC1
INT1
Slaves B0, B1...BN
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

TCA9543A Datasheet Preview

TCA9543A Datasheet

Low Voltage 2-Channel I2C Bus Switch

No Preview Available !

TCA9543A
SCPS206B – MARCH 2014 – REVISED NOVEMBER 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 I2C Interface Timing Requirements........................... 6
6.7 Switching Characteristics .......................................... 7
6.8 Interrupt and Reset Timing Requirements ................ 7
6.9 Typical Characteristics .............................................. 8
7 Parameter Measurement Information .................. 9
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 12
8.5 Programming........................................................... 12
8.6 Register Maps ......................................................... 14
9 Application and Implementation ........................ 17
9.1 Application Information............................................ 17
9.2 Typical Application .................................................. 17
10 Power Supply Recommendations ..................... 20
10.1 Power-On Reset Requirements ........................... 20
11 Layout................................................................... 22
11.1 Layout Guidelines ................................................. 22
11.2 Layout Example .................................................... 22
12 Device and Documentation Support ................. 23
12.1 Receiving Notification of Documentation Updates 23
12.2 Support Resources ............................................... 23
12.3 Trademarks ........................................................... 23
12.4 Electrostatic Discharge Caution ............................ 23
12.5 Glossary ................................................................ 23
13 Mechanical, Packaging, and Orderable
Information ........................................................... 23
4 Revision History
Changes from Revision A (February 2015) to Revision B
Page
• Changed the Pin Configuration images appearance.............................................................................................................. 3
• Changed VCC = 3.3 V to VCC = 2.5 V in Figure 16 .............................................................................................................. 17
Changes from Original (September 2012) to Revision A
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
• Added D package to the datasheet. ...................................................................................................................................... 1
• Changed Handling Ratings table to ESD Ratings .................................................................................................................. 4
• Added D package to the Thermal Information table. ............................................................................................................. 4
2
Submit Documentation Feedback
Product Folder Links: TCA9543A
Copyright © 2014–2019, Texas Instruments Incorporated


Part Number TCA9543A
Description Low Voltage 2-Channel I2C Bus Switch
Maker etcTI
PDF Download

TCA9543A Datasheet PDF






Similar Datasheet

1 TCA9543A Low Voltage 2-Channel I2C Bus Switch
etcTI





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy