LTC4306
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LTC4306

4-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering

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IBIS Model LTC4306 IBIS GN Package Download 407.66 KB IBIS Model LTC4306 IBIS UFD Package Download 407.74 KB
Part Models 8
1ku List Price Starting From $4.19
Features
  • 1:4 2-Wire Multiplexer/Switch
  • Connect SDA and SCL Lines with 2-Wire Bus Commands
  • Supply Independent Bidirectional Buffer for SDA and SCL Lines Increases Fan-Out
  • Programmable Disconnect from Stuck Bus
  • Compatible with I2C and SMBus Standards
  • Rise Time Accelerator Circuitry
  • SMBus Compatible ALERT Response Protocol
  • Two General Purpose Inputs-Outputs
  • Prevents SDA and SCL Corruption During Live Board
  • Insertion and Removal from Backplane
  • ±10kV Human Body Model ESD Ruggedness
  • 24-Lead QFN (4mm × 5mm) and SSOP Packages
Additional Details
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The LTC4306 is a 4-channel, 2-wire bus multiplexer with bus buffers to provide capacitive isolation between the upstream bus and downstream buses. Through software control, the LTC4306 connects the upstream 2-wire bus to any desired combination of downstream buses. Each channel can be pulled up to a supply voltage ranging from 2.2V to 5.5V, independent of the LTC4306 supply voltage.The downstream channels are also provided with ALERT1-ALERT4 inputs for fault reporting.

Programmable timeout circuitry disconnects the downstream buses if the bus is stuck low. When activated, rise time accelerators source currents into the 2-wire bus pins to reduce rise time. Driving the ENABLE pin low restores all features to their default states. Three address pins provide 27 distinct addresses.

The LTC4306 is available in 24-lead QFN (4mm × 5mm) and SSOP packages.

Applications

  • Nested Addressing
  • 5V/3.3V Level Translator
  • Capacitance Buffer/Bus Extender
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file View Data Sheet
Documentation View All Documentation
IBIS Model LTC4306 IBIS GN Package Download 407.66 KB IBIS Model LTC4306 IBIS UFD Package Download 407.74 KB
Part Models 8
1ku List Price Starting From $4.19
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LTC4306

Documentation

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Data Sheet

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UPDATED 11/09/2007
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LTC4306: 4-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering Data Sheet

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UPDATED 05/29/2008
Japanese

LTC4306: 容量バッファリング付き4チャネル、2線バス･マルチプレクサ データシート

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1.00M
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User Guide

2

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WIKI

UPDATED 12/22/2021
English
EVAL-LTC4306-PMDZ User Guide redirect icon

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PDF

UPDATED 09/24/2009
English
DC906A - Demo Manual redirect icon

555.00K

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Reliability Data

1

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UPDATED 03/22/2018
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R410 Reliability Data redirect icon

17.1 K

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Spec Notice

1

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UPDATED 10/11/2011
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Product Errata LTC4302-1/LTC4302-2 LTC4305, LTC4306, I2C Filter SDAIN Short Pulse Misprocessing Issue redirect icon

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Technical Articles

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UPDATED 12/01/2005
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4-Channel I2C Multiplexer Provides Address Expansion, Bus Buffering and Fault Management redirect icon

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UPDATED 06/01/2008
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Battery Manager Enables Integrated, Efficient, Scalable and Testable Backup Power Systems redirect icon

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Documentation

Technical Documents 7
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Data Sheet 1

LTC4306: 4-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering Data Sheet

Reliability Data 1

R410 Reliability Data

User Guide 2

EVAL-LTC4306-PMDZ User Guide
DC906A - Demo Manual

Technical Articles 2

4-Channel I2C Multiplexer Provides Address Expansion, Bus Buffering and Fault Management
Battery Manager Enables Integrated, Efficient, Scalable and Testable Backup Power Systems

Spec Notice 1

Product Errata LTC4302-1/LTC4302-2 LTC4305, LTC4306, I2C Filter SDAIN Short Pulse Misprocessing Issue

Device Drivers 2

LTC430x Github Linux Driver Source Code
LTC4306 GitHub No-OS Driver Source Code

Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

Product Selector Card 2

I2C Quick Guide
Serial Bus Buffers, Extenders, and Accelerators

Webcast 1

I2C Unbounded - Solve Your 2 Wire Challenges

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2

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Video

2020-10-28

01:00

Protect your Innovations: from High Precision to High Power

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Video

2017-09-18

11:21

I2C/SMBus Buffers - Video Product Brief

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4306CGN#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC4306CGN#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC4306CUFD#PBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC4306CUFD#TRPBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC4306IGN#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC4306IGN#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC4306IUFD#PBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC4306IUFD#TRPBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Oct 3, 2024

- 24_0235

(QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking

LTC4306CGN#PBF

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LTC4306CGN#TRPBF

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PCN24_0235_Form

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Material_Report

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Delta Qualification Matrix

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Aug 10, 2022

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Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL

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LTC4306CGN#TRPBF

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LTC4306IGN#PBF

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LTC4306IGN#TRPBF

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Delta Qualification Matrix

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Product Lifecycle

PCN

Oct 3, 2024

- 24_0235

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(QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking

LTC4306CGN#PBF

PRODUCTION

LTC4306CGN#TRPBF

PRODUCTION

pdf

PCN24_0235_Form

external-icon

xls

Material_Report

Download

pdf

Other

external-icon

xlsm

Delta Qualification Matrix

Download
Aug 10, 2022

- 22_0177

arrow down

Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL

LTC4306CGN#PBF

PRODUCTION

LTC4306CGN#TRPBF

PRODUCTION

LTC4306IGN#PBF

PRODUCTION

LTC4306IGN#TRPBF

PRODUCTION

pdf

PCN22_0177_Form

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xls

Material_Report

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xlsm

Delta Qualification Matrix

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Software & Part Ecosystem

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Pin-Selectable, 4-Channel, 2-Wire Multiplexer with Bus Buffers

Evaluation Kits 2

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EVAL-LTC4306

LTC4306 Evaluation Board with PMOD Connectors on Both Upstream and Downstream

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EVAL-LTC4306

LTC4306 Evaluation Board with PMOD Connectors on Both Upstream and Downstream

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EVAL-LTC4306
LTC4306 Evaluation Board with PMOD Connectors on Both Upstream and Downstream

Features and Benefits

  • Features LTC4306, a 4-channel, 2-wire I2C bus and SMBus compatible multiplexer having bus buffers that provide capacitive isolation between the upstream bus and downstream buses
  • 6-pin PMOD connectors for upstream and downstream connection for compatibility with PMOD form factors such as EVAL-ADICUP3029  (Arduino based Wireless Development Platform based on an ultra-low power ARM Cortex-M3 processor) or with EVAL-SDP-CK1Z  (SDP-K1 Cortex ARM core processors Controller Board and color sensor)
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Product Detail

The EVAL-LTC4306-PMDZ features LTC4306, a 4-channel, 2-wire I2C bus and SMBus compatible multiplexer having bus buffers that provide capacitive isolation between the upstream bus and downstream buses. This evaluation board provides 6-pin PMOD connectors for upstream and downstream connection for compatibility with PMOD form factors such as EVAL-ADICUP3029, an Arduino based Wireless Development Platform for Internet of Things applications based on an ultra-low power ARM Cortex-M3 processor.

Pmod™ is the Digilent defined standard of Peripheral Modules, small I/O interface boards that offer an ideal way to extend the capabilities of programmable logic and microcontroller boards. They allow sensitive signal conditioning circuits and high-power drive circuits to be placed where they are most effective — near sensors and actuators.

EVAL-LTC4306-PMDZ comes with PMOD connectors on both upstream and downstream side for compatibility with PMOD form factors, 10K pull up resistors on upstream and all downstream buses and 0.1uF bypass capacitor on the upstream side. The user has the option to add 6 pin 2.54mm pitch pin header for connection to the GPIOs (General Purpose Input/Output pins) on EVAL-LTC4306-PMDZ for extra functionality. The user also has the option to add test points on different places on the board for fault monitoring and place additional bypass capacitors (0805 size footprint) on the upstream and the downstream side for defense against any unwanted noise in their system for adequate bypassing on power supply lines.

Resources

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WIKI

EVAL-LTC4306-PMDZ User Guide reference design link

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WIKI

LTC4306 Device Driver reference design link

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DC906A

LTC4306 4-Channel I2C Mux

Evaluation Kits2

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EVAL-LTC4306

LTC4306 Evaluation Board with PMOD Connectors on Both Upstream and Downstream
evaluation kit item images

DC906A

LTC4306 4-Channel I2C Mux

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