P82B715PE4

Signal Buffers, Repeaters, Splitters Overview

The P82B715PE4 is an I2C bus extender manufactured by Texas Instruments, housed in an 8-pin PDIP package. It operates within a supply voltage range of 3 V to 12 V and supports bidirectional data transfer for I2C signals. The device allows a main I2C bus capacitance of 400 pF on the Sx/Sy side and up to 3000 pF on the transmission Lx/Ly side. It features dual bidirectional unity-voltage-gain buffers that drive a 10× lower-impedance bus wiring. The component supports operation over 50 meters of twisted-pair wire and includes latch-up performance exceeding 100 mA per JESD 78, Class II.

Signal Buffers, Repeaters, Splitters Feature Summary

• Supports bidirectional data transfer of I2C bus signals without external directional control
• Drives 10× lower-impedance bus wiring for improved noise immunity
• Enables multi-drop distribution of I2C signals using low-cost twisted-pair cables
• Provides ESD protection exceeding JESD 22 standards

Signal Buffers, Repeaters, Splitters Applications

• HDMI DDC
• Long I2C communications
• Industrial communications

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix PE4 corresponds to the PDIP-8 tube packaging configuration. Confirm the manufacturer source is Texas Instruments or authorized distributors. Ensure the component meets RoHS compliance requirements for the intended application environment. Check for any recent production status changes or lifecycle notifications from the supplier.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when extending I2C bus distance beyond standard limits using twisted-pair cabling. Ensure the system design accommodates the required pullup resistors for both the standard I2C bus and the buffered high-capacitance bus. Verify that the operating temperature range of -40°C to 85°C matches the environmental conditions. Consider the 3000 pF capacitance limit on the buffered side for cable length calculations.

Signal Buffers, Repeaters, Splitters Part Context

The P82B715PE4 belongs to the P82B715 family of I2C bus extenders. It serves as a buffer for highly capacitive I2C bus systems, isolating bus capacitance so that total loading is not apparent to other I2C buses. This allows connection of two separate I2C-based systems using longer cables or general-purpose wiring without special voltage level considerations.

Signal Buffers, Repeaters, Splitters Replacement Considerations

P82B715P is a direct functional substitute with identical specifications but may differ in manufacturing lot or minor packaging variations. Both are active products from Texas Instruments.