PCA9510DP,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9510DP,118 is a hot swappable I2C and SMBus bus buffer manufactured by NXP Semiconductors. It allows I/O card insertion into a live backplane without corrupting data or clock buses. The device provides bi-directional buffering to isolate backplane and card capacitances. It operates within a supply voltage range of 2.7 V to 5.5 V and supports clock frequencies up to 400 kHz. The component features an active high ENABLE input and an open-drain READY output. It includes a 1 V precharge circuit on SDA and SCL lines to minimize current during insertion. The package is TSSOP8.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bi-directional buffering for SDA and SCL lines prevents signal corruption during live board insertion and removal from multi-point backplane systems.
• Compatible with I2C standard mode, I2C fast mode, and SMBus standards.
• Incorporates a digital ENABLE input pin that activates the device when HIGH and forces low current mode when LOW.
• Features an open-drain READY output pin indicating connection status between backplane and card sides.

Signal Buffers, Repeaters, Splitters Applications

• cPCI cards requiring insertion or removal from an operating system.
• VME cards requiring insertion or removal from an operating system.
• AdvancedTCA cards requiring insertion or removal from an operating system.
• Multi-point backplane cards requiring hot swapping capabilities.

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the ordering code matches PCA9510DP,118 to ensure the correct TSSOP8 package variant. Confirm the temperature range requirement aligns with the -40 to +85 °C specification. Check for RoHS compliance documentation if required by the manufacturing process. Ensure the supplier source is authorized to guarantee product authenticity and traceability.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for applications requiring hot swap functionality on I2C or SMBus networks. It isolates card capacitance from the backplane, simplifying rise time requirements. Use the PCA9511 variant if rise time acceleration is needed for weaker pull-up currents. Ensure the system pull-up resistors meet the minimum capacitance requirements for proper operation at the chosen voltage.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA9510/PCA9511 family of hot swappable bus buffers. The PCA9510 variant lacks rise time accelerator circuitry to prevent interference in systems with multiple devices. The DP suffix indicates the TSSOP8 plastic thin shrink small outline package. It serves as a bridge between backplane and peripheral card buses.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The PCA9510D is the SO8 package equivalent. The PCA9511 series offers similar functionality but includes rise time accelerators. Verify pin compatibility and electrical characteristics before substituting with other bus buffer ICs.