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1. General Description

LT8311EX is a low cost high performance USB repeater that supports signal transferring extension over cat5/5e/6 cable, compliant with USB2.0 specification. The extension length can be up to 120 meters over CAT6 cable. It eliminates the 5 meters distance limitation of USB2.0 specification. There are four lines used for signal transferring extension between two LT8311EX chips. Internal equalization settings can be changed through I2C interface for different extension lengths. 

2. Features

• Extension length up to 120 meters
• Support USB 2.0 high-speed and USB 1.1(low-speed and full-speed)
• Support hot plugg
• Internal pull-up and pull-down resistor
• Pin control and I2C control mode for equalization
• Single 3.3V power supply
• 20-pin TSSOP  RoHS package
• -40 to 85℃ operating temperature range
• ESD:HBM to 2KV


• Desktop and laptop computers, docking stations
• Servers and workstations
• Data storage systems


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