Overview
Features and Benefits
- 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
Product Details
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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
-
R410 Reliability Data3/22/2018
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EVAL-LTC4306-PMDZ User Guide12/22/2021WIKI
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DC906A - Demo Manual9/24/2009
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Serial Bus Buffers, Extenders, and Accelerators7/13/2017
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I2C Quick Guide7/13/2017
Tools & Simulations
IBIS Model
Product Recommendations
LTC4306 Companion Parts
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC4306CGN#PBF | Material Declaration | Reliability Data | 24-Lead SSOP (Narrow 0.15 Inch) | |
| LTC4306CGN#TRPBF | Material Declaration | Reliability Data | 24-Lead SSOP (Narrow 0.15 Inch) | |
| LTC4306CUFD#PBF | Material Declaration | Reliability Data | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | |
| LTC4306CUFD#TRPBF | Material Declaration | Reliability Data | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | |
| LTC4306IGN#PBF | Material Declaration | Reliability Data | 24-Lead SSOP (Narrow 0.15 Inch) | |
| LTC4306IGN#TRPBF | Material Declaration | Reliability Data | 24-Lead SSOP (Narrow 0.15 Inch) | |
| LTC4306IUFD#PBF | Material Declaration | Reliability Data | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | |
| LTC4306IUFD#TRPBF | Material Declaration | Reliability Data | 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) | |
| Wafer Fabrication Data | R410 Reliability Data |
PCN-PDN Information
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Support & Discussions
LTC4306 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.