P82B715 I2C Bus Extender | TI.com

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I2C Bus Extender

I2C Bus Extender - P82B715


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.

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


  • 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)


Compare all products in I2C level shifters, buffers & hubs Email Download to Excel
Part number Order VCCA (Min) (V) VCCA (Max) (V) VCCB (Min) (V) VCCB (Max) (V) Supply restrictions Frequency (Max) (kHz) Features Operating temperature range (C) Approx. price (US$) Package Group Rating
P82B715 Order now 3     12     3     12     VCC Single Supply     400     Buffer     -40 to 85     0.63 | 1ku     PDIP | 8
SOIC | 8    
P82B96 Order now 2     15     2     15     VCC Single Supply     400     Buffer     -40 to 85     1.33 | 1ku     PDIP | 8
SOIC | 8
VSSOP | 8    
TCA9517 Order now 0.9     5.5     2.7     5.5     VCCA <= VCCB     400     Buffer
Enable Pin    
-40 to 85     0.30 | 1ku     SOIC | 8
VSSOP | 8