1 Features

• 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 highly-capacitive 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.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Block Diagram