P82B715TD is an I²C bus expander/buffer product launched by NXP, featuring an 8-pin SOIC surface mount packaging. This device is designed to overcome the 400pF capacitance limitation of the I²C bus, enabling the effective capacitance of the bus to be extended to approximately 3000pF and the communication distance to be extended to approximately 50 meters.
This device provides bidirectional, unity-gain buffering for the two signal lines SDA and SCL, achieving a 10-fold impedance transformation. The operating voltage range is 3V to 12V, and the operating temperature range is -40°C to +85°C. It is compatible with derivative bus systems such as I²C, SMBus, and PMBus.
Features ：
• Device type: I²C bus expander/buffer, dual-channel (SDA, SCL) bidirectional buffering
• Operating voltage: 3V to 12V
• Capacitance expansion capability: The bus capacitance can be expanded from 400pF to approximately 3000pF.
• Impedance transformation: ×10 impedance transformation, reducing the bus load
• Signal rate: Supports 100kHz and 400kHz clock rates
• Operating temperature: -40°C to +85°C
• Package type: SOIC-8, surface mount
• MSL Level: Level-1 (Unrestricted)
• Environmental compliance: Compliant with RoHS standards
Application：
• Long-distance I²C communication: Extending the I²C bus to approximately 50 meters for use in distributed systems
• High-capacity load bus: A bus that drives a high-capacity I²C bus consisting of multiple devices, connectors, and cables
• Multi-board system interconnection: Inter-board communication in the backplane and connector environment
• Industrial and automotive applications: Scenarios requiring longer bus lengths or higher noise resistance
• AdvancedTCA Architecture: IPMB (Intelligent Platform Management Bus) Communication
