LTC4313
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LTC4313

2-Wire Bus Buffers with High Noise Margin

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IBIS Model LTC4313-3 IBIS Model Download 16.00KB IBIS Model LTC4313-1 IBIS Model Download 16.00KB IBIS Model LTC4313-2 IBIS Model Download 16.00KB
Part Models 24
1ku List Price Starting From $2.90
Features
  • Bidirectional Buffer Increases Fanout
  • High Noise Margin with VIL = 0.3•VCC
  • Compatible with Non-Compliant I2C Devices That Drive a High VOL
  • Strong (LTC4313-1) and 2.5mA (LTC4313-2) Rise Time Accelerator Current
  • Level Shift 1.5V, 1.8V, 2.5V, 3.3V and 5V Busses
  • Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane
  • Stuck Bus Disconnect and Recovery
  • Compatible with I2C, I2C Fast Mode and SMBus
  • ±4kV Human Body Model ESD Ruggedness
  • High Impedance SDA, SCL Pins When Unpowered
  • 8-Lead MSOP and 8-Lead (3mm × 3mm) DFN Packages
Additional Details
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The LTC4313 is a hot swappable 2-wire bus buffer that provides bidirectional buffering while maintaining a low offset voltage and high noise margin up to 0.3 • VCC. The high noise margin allows the LTC4313 to be interoperable with devices that drive a high VOL (>0.4V) and allows multiple LTC4313s to be cascaded. The LTC4313-1 and LTC4313-2 support level translation between 3.3V and 5V busses. In addition to these voltages, the LTC4313-3 also supports level translation to 1.5V, 1.8V and 2.5V.

During insertion, the SDA and SCL lines are pre-charged to 1V to minimize bus disturbances. Connection is established between the input and output after ENABLE is asserted high and a stop bit or bus idle condition has been detected on the SDA and SCL pins.

If both data and clock are not simultaneously high at least once in 45ms, the input is disconnected from the output. Up to 16 clock pulses are subsequently generated to free the stuck bus. Rise time accelerators (RTAs) provide pull-up currents on SDA and SCL rising edges to meet rise time specifications in heavily loaded systems. The RTAs are configured as slew limited switches in the LTC4313-1 and 2.5mA current sources in the LTC4313-2. The LTC4313-3 does not have RTAs.

Applications

  • Capacitance Buffers/Bus Extender
  • Live Board Insertion
  • Telecommunications Systems Including ATCA
  • Level Translation
  • PMBus
  • Servers
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IBIS Model LTC4313-3 IBIS Model Download 16.00KB IBIS Model LTC4313-1 IBIS Model Download 16.00KB IBIS Model LTC4313-2 IBIS Model Download 16.00KB
Part Models 24
1ku List Price Starting From $2.90
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LTC4313

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UPDATED 10/11/2011
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LTC4313: 2-Wire Bus Buffers with High Noise Margin Data Sheet

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UPDATED 11/25/2011
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LTC4313: 高ノイズ・マージンの2線バス・バッファ データシート

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Documentation

Circuit Note 1

CN0409: Low to High Level Water Turbidity Measurement System (Rev.0)

Product Selector Card 2

I2C Quick Guide
Serial Bus Buffers, Extenders, and Accelerators

Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

Webcast 1

I2C Unbounded - Solve Your 2 Wire Challenges

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2020-10-28

01:00

Protect your Innovations: from High Precision to High Power

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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.

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LTC4313CDD-1#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313CDD-1#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313CDD-2#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313CDD-2#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313CDD-3#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313CDD-3#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313CMS8-1#PBF 8-Lead MSOP external-link
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LTC4313CMS8-2#PBF 8-Lead MSOP external-link
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LTC4313CMS8-2#TRPBF 8-Lead MSOP external-link
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LTC4313CMS8-3#PBF 8-Lead MSOP external-link
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LTC4313CMS8-3#TRPBF 8-Lead MSOP external-link
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LTC4313IDD-1#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313IDD-1#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313IDD-2#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313IDD-2#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313IDD-3#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313IDD-3#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC4313IMS8-1#PBF 8-Lead MSOP external-link
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LTC4313IMS8-1#TRPBF 8-Lead MSOP external-link
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LTC4313IMS8-2#PBF 8-Lead MSOP external-link
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LTC4313IMS8-2#TRPBF 8-Lead MSOP external-link
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LTC4313IMS8-3#PBF 8-Lead MSOP external-link
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LTC4313IMS8-3#TRPBF 8-Lead MSOP external-link
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