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HomeProductsIntegrated Circuits (ICs)Interface - Signal Buffers, Repeaters, SplittersLTC4309CGN#PBF
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LTC4309CGN#PBF - Analog Devices Inc.

Manufacturer Part Number
Analog Devices, Inc.
Allelco Part Number
ECAD Model
Parts Description
Detailed Description
16-SSOP (0.154', 3.90mm Width)
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
In stock: 8770

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LTC4309CGN#PBF Tech Specifications
Analog Devices Inc. - LTC4309CGN#PBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LTC4309CGN#PBF

Product Attribute Attribute Value  
Manufacturer Analog Devices, Inc.  
Voltage - Supply 2.3V ~ 5.5V  
Type Buffer, Accelerator  
Supplier Device Package 16-SSOP  
Signal Conditioning -  
Series -  
Package / Case 16-SSOP (0.154', 3.90mm Width)  
Package Tube  
Output 2-Wire Bus  
Operating Temperature 0°C ~ 70°C  
Product Attribute Attribute Value  
Number of Channels 2  
Mounting Type Surface Mount  
Input 2-Wire Bus  
Delay Time -  
Data Rate (Max) 400kHz  
Current - Supply 7mA  
Capacitance - Input 10 pF  
Base Product Number LTC4309  
Applications I²C - Hotswap  

Parts Introduction

Manufacturer Part Number



Analog Devices


The LTC4309CGN#PBF is an I2C bus buffer and accelerator designed to facilitate hot-swappable I2C-bus and SMBus applications.

Product Features and Performance

Active I2C bus buffer

Allows I2C or SMBus device hot-swapping

Prevents SDA and SCL corruption during live board insertion and removal

Support for Standard (100kHz), Fast (400kHz), and Fast-Mode Plus (1MHz) I2C-buses

Capability to work with a supply voltage from 2.3V to 5.5V

Two bidirectional buffering channels

Automatic detection and isolation of bus contention or faults

Low operating current of 7mA

Compatible with I2C master or slave devices

2-wire bus input and output

Product Advantages

Enables hot-swapping of I2C devices without turning off the system

Minimizes downtime in systems that require maintenance or upgrades

Provides robust operation by preventing data corruption during insertion and removal

Supports high-speed I2C communication protocols

Minimizes power consumption with low supply current requirement

Key Technical Parameters

Maximum Data Rate: 400kHz

Number of Channels: 2

Capacitance - Input: 10 pF

Voltage - Supply Range: 2.3V to 5.5V

Current - Supply: 7mA

Operating Temperature Range: 0°C to 70°C

Mounting Type: Surface Mount

Package / Case: 16-SSOP

Supplier Device Package: 16-SSOP

Quality and Safety Features

Built with robust built-in fault protection

Automatically isolates problematic devices to maintain bus integrity


Compatible with I2C and SMBus standards

Interoperable with both master and slave devices on the I2C bus

Application Areas

Servers and Networking Equipment


Embedded Systems and Computing

Industrial Control

User-Replaceable Modules

Product Lifecycle

Active status

Not reported as nearing discontinuation

Suitable replacements or upgrades should be checked with the manufacturer's current product offerings

Several Key Reasons to Choose This Product

Facilitates hot-swapping in critical applications reducing system downtime

Ensures data integrity under insertion and removal conditions

Addresses bus contention and faults automatically enhancing system reliability

High-Speed I2C support broadens the range of compatible devices

Simple integration with surface-mount packaging suitable for compact designs

Wide operating temperature range suitable for various climates and environments

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LTC4309CGN#PBF

Product Attribute LTC4309CGN#PBF LTC4308CMS8#PBF LTC4308IMS8#TRPBF LTC4308IMS8#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Package / Case 16-SSOP (0.154', 3.90mm Width) 8-TSSOP, 8-MSOP (0.118', 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature 0°C ~ 70°C 0°C ~ 70°C -40°C ~ 85°C -40°C ~ 85°C
Type Buffer, Accelerator Buffer, Accelerator Buffer, Accelerator Buffer, Accelerator
Input 2-Wire Bus 2-Wire Bus 2-Wire Bus 2-Wire Bus
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Capacitance - Input 10 pF 10 pF 10 pF 10 pF
Applications I²C - Hotswap I²C - Hotswap I²C - Hotswap I²C - Hotswap
Data Rate (Max) 400kHz 400kHz 400kHz 400kHz
Current - Supply 7mA 7mA 7mA 7mA
Signal Conditioning - - - -
Package Tube Tube Tape & Reel (TR) Tube
Series - - - -
Base Product Number LTC4309 LTC4308 LTC4308 LTC4308
Output 2-Wire Bus 2-Wire Bus 2-Wire Bus 2-Wire Bus
Voltage - Supply 2.3V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 5.5V
Supplier Device Package 16-SSOP 8-MSOP 8-MSOP 8-MSOP
Delay Time - - - -
Number of Channels 2 2 2 2

LTC4309CGN#PBF Datasheet PDF

Download LTC4309CGN#PBF pdf datasheets and Analog Devices Inc. documentation for LTC4309CGN#PBF - Analog Devices Inc..

Cylindrical Battery Holders.pdf
PCN Assembly/Origin
PCN Design/Specification
Cylindrical Battery Holders.pdf


Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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Analog Devices Inc.

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