PCA9615DPJ

Signal Buffers, Repeaters, Splitters Overview

The PCA9615DPJ is a 2-channel multipoint Fast-mode Plus differential I2C-bus buffer with hot-swap logic, manufactured by NXP USA Inc. It extends standard single-ended SMBus/I2C-bus connections through electrically noisy environments using a differential dI2C physical layer. The device operates at bus speeds up to 1 MHz and supports cable lengths of at least 3 meters. It features two supply voltages: VDD(A) ranging from 2.3 V to 5.5 V for the card side, and VDD(B) ranging from 3.0 V to 5.5 V for the line side. The component provides 30 mA drive capability on SDA/SCL lines and includes static offset to prevent bus latch-up. It is housed in a TSSOP10 package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Supports hot-swap operations allowing module insertion or removal without disrupting existing bus data signals
• Provides improved resistance to system noise and ground offsets up to half of the supply voltage
• Enables automatic signal direction control without requiring external direction signals
• Includes bus idle detection functionality to wait for an idle condition before establishing connection

Signal Buffers, Repeaters, Splitters Applications

• Monitoring remote temperature or leak detectors in harsh environments
• Controlling power supplies in high-noise industrial settings
• Transmitting I2C-bus signals between equipment cabinets
• Commercial lighting and industrial heating or cooling control systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering part number PCA9615DPJ against the manufacturer's current product data sheet to confirm availability and packaging details. Ensure that the TSSOP10 package dimensions and pin configuration match your PCB layout requirements. Confirm that the operating temperature range of -40 °C to +85 °C aligns with your environmental specifications. Check for any recent discontinuation notices or alternative packing methods such as Static Shielding Bags.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when extending I2C buses over long distances or through electrically noisy environments where standard single-ended connections fail. It is suitable for applications requiring multiple targets on a differential bus or those involving potential ground offsets up to 2.5 V. Ensure that the system design accommodates the separate VDD(A) and VDD(B) supply rails and that twisted-pair cabling is used for optimal performance. Verify that the 3-meter cable limit at 1 MHz meets your distance requirements.

Signal Buffers, Repeaters, Splitters Part Context

The PCA9615DPJ belongs to the PCA9615 family of differential I2C-bus buffers designed by NXP Semiconductors. This series addresses limitations of standard I2C buses in rugged environments by utilizing a differential transmission line. The DPJ suffix indicates the specific tape-and-reel packaging variant within the TSSOP10 package offering. It serves as a bridge between conventional single-ended wired-OR I2C buses and 4-wire differential dI2C buses.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9615DPZ is identified as a drop-in replacement for PCA9615DPJ according to PCN 202104008A. Both variants share the same TSSOP10 package and functional specifications. The primary difference lies in the packing method, with the DPZ variant utilizing a Static Shielding Bag solution.