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.