P82B96PN,112

Signal Buffers, Repeaters, Splitters Overview

The P82B96PN,112 is a dual bidirectional bus buffer IC manufactured by NXP Semiconductors. It creates a non-latching interface between standard I2C-bus logic and other bus configurations with different voltage or current levels. The device supports a supply voltage range of 2 V to 15 V, with Sx/Sy logic levels independent of the supply. It isolates capacitance, allowing 400 pF on the Sx/Sy side and 4000 pF on the Tx/Ty side. The Tx/Ty outputs provide 60 mA sink capability for driving low-impedance buses. It operates at 400 kHz over at least 20 meters of wire. The component is available in SO8 (P82B96TD) and TSSOP8 packages.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional data transfer of I2C-bus signals
• Isolates capacitance between local and remote bus nodes
• Tx/Ty outputs have high sink capability for driving low-impedance buses
• Splits I2C-bus signal into forward/reverse pairs for isolation interfaces

Signal Buffers, Repeaters, Splitters Applications

• Interface between I2C-buses operating at different logic levels
• Interface between I2C-bus and SMBus standard
• Conversion of I2C-bus signals to multi-drop differential bus hardware
• Opto-isolation between I2C-bus nodes

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature range. The P82B96TD variant supports an extended temperature range up to +125 °C, while standard versions operate from -40 °C to +85 °C. Confirm RoHS compliance and lead-free status through official documentation before procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when extending I2C bus distance or isolating voltage domains is required. Ensure the buffered bus capacitance does not exceed 4000 pF. Verify that the application does not require connecting multiple Sx or Sy pins together, as this configuration is unsupported and may cause latching issues.

Signal Buffers, Repeaters, Splitters Part Context

The P82B96 belongs to the I2C/I3C bus repeaters, buffers, and extenders category within NXP's interface product portfolio. It serves as a solution for expanding I2C networks beyond standard capacitive limits and bridging different logic voltage levels without protocol restrictions.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The P82B96DPZ is a drop-in alternate for the P82B96DP,118 variant. Verify pin compatibility and package dimensions when substituting between SO8 and TSSOP8 form factors.

Signal Buffers, Repeaters, Splitters FAQ

Can multiple Sx or Sy pins be interconnected?

No, two or more Sx or Sy I/Os must not be interconnected. The design does not support this configuration due to potential latching issues.

What is the maximum output voltage level for Tx and Ty?

The maximum output voltage level for Tx and Ty is 15 V.

How does the P82B96 handle VCC failure?

If VCC fails, neither the I2C-bus nor the Tx output is held LOW. Their open-collector configuration allows them to be pulled up to the rated maximum of 15 V even without VCC present.