1 Features

1• Operating Power-Supply Voltage Range of

3 V to 12 V

• Supports Bidirectional Data Transfer of I2C Bus

Signals

• Allows Bus Capacitance of 400 pF on Main I2C

Bus (Sx/Sy Side) and 3000 pF on Transmission

Side (Lx/Ly Side)

• Dual Bidirectional Unity-Voltage-Gain Buffer With

No External Directional Control Required

• Drives 10× Lower-Impedance Bus Wiring for

Improved Noise Immunity

• Multi-Drop Distribution of I2C Signals Using Low-

Cost Twisted-Pair Cables

• I2C Bus Operation Over 50 Meters of Twisted-Pair

Wire

• Latch-up Performance Exceeds 100 mA Per

JESD 78, Class II

• ESD Protection Exceeds JESD 22

– 2500-V Human-Body Model (A114-A)

– 400-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

2 Applications

• HDMI DDC

• Long I2C Communications

• Industrial Communications

3 Description

The P82B715 is a device for buffering highlycapacitive

I2C bus systems, and it supports

bidirectional data transfer through the I2C bus. The

P82B715 buffers both the serial data (SDA) and

serial clock (SCL) signals on the I2C bus and allows

for extension of the I2C bus, while retaining all the

operating modes and features of the I2C system.